Creamy Gluten-Free Tuna Pasta Bake

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This Creamy Tuna Pasta Bake is an easy family recipe which is perfect for midweek meals. Iโ€™ll show you how to make perfect al dente gluten-free pasta smothered in a flavourful cheesy tuna tomato sauce and how to choose the best gluten-free pasta for the job.

A dish of Gluten-Free Tuna Pasta Bake with a portion taken out showing creamy delicious inside. Portion sitting on a plate with extra cheese on top.

With four children we have a very busy household so I love recipes like this which are quick, easy and can be made ahead of time. Although itโ€™s also simple to pull together 20 minutes before the school run to be eaten piping hot when we get back.

This Tuna Pasta Bake uses my popular gluten-free white sauce recipe which takes about 5 minutes to prepare. Then to this base we simply stir in cream cheese, cheddar cheese, sun-dried tomato paste, blanched fresh tomatoes, tuna, sweetcorn, parsley for greenery and the pasta. Toss a load more cheddar and some breadcrumbs over the top and there you have it. Minimal chopping and no sauteing, itโ€™s just a bit of heating, stirring and assembly.

This pasta sauce is totally foolproof which you canโ€™t really mess up by making it too thin or thick or splitting. Itโ€™s made entirely from scratch and tastes incredibly fresh and flavourful.

Read on for my easy tips for perfectly cooked gluten-free pasta (no mush here), what I recommend for the ideal gluten-free crumb, plus make ahead tips including detailed freezing guidance.

A portion of Gluten-Free Tuna Pasta Bake on a plate with extra cheese scattered on top.

Why Youโ€™ll Love This Gluten-Free Tuna Pasta Bake

  • Itโ€™s made from scratch but thereโ€™s minimal chopping and no sauteing. Just easy assembly to keep hands on time to within 20 minutes.
  • Easy to meal-prep. You can include this recipe as part of your weekend batch cooking, assembling the whole recipe days before, then just doing the final bake before you want to serve.
  • Super creamy sauce. It builds on my No.1 website recipe for Gluten-Free White Sauce but enriched with plenty of cheese and cream cheese, then lifted with fresh tomatoes and sun-dried tomato paste for a rich tomatoey flavour.
  • Perfectly cooked pasta. So often gluten-free pasta turns to mush โ€“ not here, Iโ€™ll share my tips below.
  • Family friendly. I need to make this dinner work across four very fussy kids so we keep the veg inside to their favourites - sweetcorn and fresh tomatoes and serve extra vegetables on the side. You can easily customise this to your family favourites.

Choosing The Best Gluten-Free Pasta

I think gluten-free pasta has vastly improved over the past few years but some are certainly better than others.

When it comes to specific brand recommendations, check the ingredients list and, if you are familiar, approach it in the same way I teach gluten-free flour blending. Focus on the balance of flours โ€“ in this case I like to choose pastas which include both wholegrains and protein packed flours.

Stick to brands which use more than one flour in the blend (i.e. just brown rice flour pasta often can be soggy and lose its shape or the flavour of just lentil flour can be overpowering). I find better success using pastas which have a more balanced blend.

For example, seek gluten-free pasta brands which might have both rice flour (the wholegrain) and quinoa or chickpea flour (the protein packed flours) in the ingredients list. They donโ€™t necessarily have to be the expensive options as some supermarket versions are often very good and economical.

Grab Your Free Copy

Gluten-Free Flour Cheatsheet

The Gluten-Free Flour Cheatsheet makes choosing the right flour easy, breaking down every option from sorghum to cassava into four simple categories. With nutritional info, flavour pairings, and a printable reference section, this guide cuts through the confusion so you can navigate gluten-free baking with clear flour choices.

UK Gluten-Free Pasta Brand Recommendations

M&S Made Without, Tesco Free From, Waitrose Free From, Aldi Free From, Lidl Just Free all use just a blend of rice flour and corn in their pastas. I think we need more balance and more protein.

For a supermarket choice I personally recommend Sainsburys Free From Penne Pasta, which I used to recipe test in this pasta bake, which uses rice, corn and also quinoa. Including quinoa which is protein packed flour gives the end result more stability.

If you can splash out for a brand then Garofalo pasta which also has rice, corn and quinoa is very good and holds its shape well.

Whichever pasta you use, do note that overcooking gluten-free pasta is often the culprit of soggy results, and as such gluten-free pasta dishes often donโ€™t lend themselves well to re-heating.

Always check labels though as different pasta brands vary in ingredients so if you have to avoid anything specific (as well as gluten) then itโ€™s always worth reading labels before you buy.

Ingredients Needed

Gluten-Free Tuna Pasta Bake ingredients on a table.

Gluten-Free Pasta. For the pasta shape, I like using penne pasta for this pasta bake but fusilli works well too. If you are looking for brand recommendations then see above.

Tuna. This recipe works with any kind of tuna. Albacore tuna has the best flavour and firmest texture. However, the cheaper tins of tuna are absolutely fine and is what I use most frequently. I prefer using tuna in oil as itโ€™s often got the best flavour. You can happily use tuna in brine or spring water if you prefer. Whatever tuna you choose to use just make sure itโ€™s well-drained so you are not adding excess oil or water to the recipe. This recipe uses 2 x 125g tins of tuna which works out about 200g drained weight.

Fresh tomatoes. This recipe uses large sized tomatoes and you donโ€™t need fancy organic tomatoes but they often provide the best flavour. If you can get locally grown tomatoes then youโ€™ll be winning!

Sweetcorn. We just need drained tinned sweetcorn. It adds a little texture, a smattering of veg and some sweetness to the recipe. You can swap for frozen peas  or omit.

Milk. This creamy sauce is mainly milk based thickened with cornflour. Whole milk is the best choice here but you can use a dairy-free alternative if you need to. Oat milk is especially good here.

Cornflour (cornstarch). This starchy flour is naturally gluten-free and very easy to use to thicken the white milk sauce. Check labels for cross-contamination.

Cheese. I like to use a good mature cheddar here for flavour. If you wanted to use half cheddar and half gruyere to really make it something special then Iโ€™m not stopping you.

Cream cheese. Instead of cream I like cream cheese here for that extra flavour. It thickens up the sauce and adds even more cheesy flavour. You can use a supermarket brand or Philadelphia โ€“ itโ€™s up to you. However, do make sure itโ€™s full-fat for the richest best results.

Sundried tomato paste. This is quite an easily accessible ingredient from the supermarket Iโ€™ve found, but if you canโ€™t find it in your smaller local one then regular tomato puree works just as well.

Garlic. We need just a few crushed cloves. You can use lazy garlic from the jars in the supermarket โ€“ just 1 teaspoon is needed.

Dijon mustard. This adds depth to the sauce. I love mustard with any creamy sauce for richness.

Honey. It adds some lovely sweetness to the sauce.

Chilli flakes. Itโ€™s lovely to have a little bit of a chilli kick with creamy sauces and to be honest this amount is barely noticeable. You can add more if you like or you can omit entirely.

Salt and pepper. This recipe uses a scant amount of salt. Taste the sauce before you add to the rest of the ingredients to see if you want to add more.

Nutmeg. This small amount of spice is a great base note to the pasta sauce.

Parsley. Fresh parsley adds some lush greenery and fresh flavour to proceedings. You can see from the photos that Iโ€™ve also served the dish with extra fresh basil which is delicious too.

Breadcrumbs. I stash gluten-free breadcrumbs in my freezer, they are usually created from staled loaves of my homemade gluten-free bread. However, they are easy to make from fresh gluten-free bread too โ€“ I give you lots of tips in my Gluten-Free Breadcrumbs recipe post. You can also use shop bought gluten-free breadcrumbs if you like.

A serving dish of Gluten-Free Tuna Pasta Bake showing creamy cheesy crispy top.

How To Make Creamy Gluten-Free Tuna Pasta Bake

For full recipe instructions go to the recipe card at the end of this post.

At a glance:

  • Blanch the tomatoes for 5 minutes and peel.
  • Blanch the pasta for 5 minutes.
  • Make the white sauce, then add tomatoes, cheese and flavourings.
  • Mix the sauce, sweetcorn, tuna and pasta in a large bowl.
  • Pour into baking dish, add breadcrumbs, cheese and bake.

With images:

Peel the tomatoes by marking a cross at each base and sitting them in a bowl of just-boiled water for 5-10 minutes. Remove and the skins peel right off.

Cook the pasta for 5 minutes only in boiling water. Drain, rinse and set aside.

Tomatoes in a bowl filled with hot water, with a cross in the skin. After, de-skinned and diced. Pasta blanched in saucepan.

Whisking the cornflour with the whole milk in a cold saucepan.

Gluten-free white sauce being prepared for pasta sauce.

Add the black pepper, salt and nutmeg then heat until it thickens with a gentle simmer.

Gluten-free white sauce being prepared for pasta sauce.

Turn the heat down to the lowest setting and tip in the tomatoes, mixing into the sauce. Follow with half the cheddar (75g) and the cream cheese and keep stirring until melted.

Pasta sauce for tuna pasta bake in saucepan with ingredients being added and stirred in.

Add the sundried tomato paste, garlic, dijon mustard, honey and chilli flakes and mix into the sauce until well combined.

Pasta sauce for tuna pasta bake in saucepan with ingredients being added and stirred in.

Take a large mixing bowl and pour the sauce into it. Add the tuna, sweetcorn and parsley and mix together. Finally stir in the pasta until everything is well combined.

Ingredients mixed for tuna pasta bake in a large mixing bowl, ready for baking.

Pour the pasta and sauce into a large baking dish then sprinkle with the rest of the cheese and the breadcrumbs. Bake for 25 minutes.

Gluten-Free Tuna Pasta Bake before baking in serving dish and after with crispy golden brown top.

How To Stop Gluten-Free Pasta Going Mushy

To ensure this pasta bake has perfectly al dente pasta and hasnโ€™t turned soggy then blanch your pasta for 5 minutes before adding to the sauce and baking.

Bring a large pan of salted water to the boil before adding your pasta, bring back up to a boil, then time it so the pasta cooks for 5 minutes exactly before draining. I have let the time slip a couple of extra minutes in the past and believe me it makes all the difference. 5 minutes exactly.

Rinse the pasta lightly just to separate them and stop it cooking. Make sure not to leave too long before adding to the sauce otherwise it has a tendency to stick together.

Since most of the mushiness comes from overcooking the pasta, youโ€™ll find this recipe tastes its best the first time you bake it. Any leftovers re-heated pushes the pasta past al dente. Delicious but you wonโ€™t have a firm pasta texture.

A dish of Gluten-Free Tuna Pasta Bake with a portion taken out showing creamy delicious inside.

Making Ahead, Freezing, Re-heating

This is a great meal to make ahead and freezes very well.

I recommend making and assembling this recipe right up to before the final bake. Whether you are keeping in the refrigerator for later on in the week or whether you are freezing for later on in the month. If you freeze or store after baking then the pasta will be overcooked when you re-heat it.

Prepare the recipe and then after you have assembled all the ingredients in the mixing bowl just before baking, instead of pouring into a baking dish you can pour it all in a food storage bag using a clip stand if you have it. Expel the air from the bag, seal and label with the date.

You can then either store in the refrigerator up to 3 days or store in the freezer for up to 3 months. If frozen, thaw in the refrigerator overnight before cooking. Follow the original recipe for pouring into the baking dish, adding the breadcrumbs and cheese and baking for 25 minutes.

Equipment recommendation: Food storage freezer bags, food storage bag clip stands, freezer labels.

Re-heating Leftovers

If you are re-heating leftovers then you can use either the microwave or oven. As noted above gluten-free pasta gets a little soggy on re-heating. You donโ€™t want to throw away leftovers obviously but just be aware the texture wonโ€™t be quite as good.

Microwave. Heat in individual portions. Place on a microwaveable plate, cover with cling film or another plate and heat for 4 minutes (700W).

Oven. If you have stored your leftovers in its original baking dish then you can place the whole dish in the oven and heat in a pre-heated oven (200ยฐC / 180ยฐC fan assisted / gas mark 6 / 400ยฐ) for 20-25 minutes. Check itโ€™s piping hot in the centre.

FAQs

Can you make this recipe dairy-free?

Absolutely. I have made this recipe making the following swaps and it still tasted lovely:
Milk. Swap for your favourite plant-based milk. I like oat milk but if you can have oats then almond milk or soy milk is good too (avoid coconut milk).
Cream cheese. You can buy good plant-based cream cheeses now so you just need to switch it up.
Cheese. I use Violife cheese when making a dairy-free version of this and itโ€™s very nice.

Why is my sauce watery?

Your fresh tomatoes may be extra juicy. If the sauce looks too watery before it goes into the oven then it usually sorts itself out. If you are worried that your tomatoes look too watery as you are dicing them then you could discard the seeds and just use the flesh. Better quality tomatoes will be less watery.

Why is my pasta mushy or too hard?

If your pasta is too mushy then itโ€™s been overbaked, if itโ€™s too hard then itโ€™s been underbaked. Every brand of gluten-free pasta is different unfortunately as they are often made up of varying ingredients or in different ratios of ingredients. If you find the final results of your recipe are mushy after following the method outlined below to the letter then (if you are using the same brand of pasta you used before) reduce the pasta blanching time by 1-2 minutes the next time you make it.

What size baking dish is best?

You need a baking dish that holds about 2.5litres. The dish used in these images is 23 x 23 x 5.8cm.

A dish of Gluten-Free Tuna Pasta Bake with a portion taken out showing creamy delicious inside.

Serving Suggestions

Garlic bread (or my Garlic Herb Focaccia from my Simple Gluten-Free Breads ebook).

Salad. Simple green salad or an easy chopped salad.

Steamed greens. A side of broccoli or kale are my personal favourites.

Recipe Variations

Switch the cheese. I like cheddar for the simplicity. However, swap out half for gruyere for a real nutty flavour and lots more melty goodness. Slices of mozzarella on top for a chewy cheese pull works incredibly. If you want some adventure then crumble up some blue cheese alongside the cheddar.

Vegetable options. I hope your children are less fussy than mine and if so feel free to plump up the vegetables. You can add frozen peas along with the sweetcorn or even a handful of kale or frozen spinach. But I do like to keep the veg prep-free โ€“ ones you can just stir in.

Olives. My favourite version of this tuna pasta bake, if Iโ€™m just making it for the adults, includes using diced black olives as well. I just love the salty flavour combination.

Gluten-Free Tuna Pasta Bake on a plate showing how creamy it is, with extra cheese scattered on top.

More Gluten-Free Oven Bakes Youโ€™ll Love

Gluten-Free Shepherdโ€™s Pieย is a deeply flavourful homely recipe that is a favourite with the whole family. Delicious lamb mince cooked in a rich gravy with plenty of vegetables and a crisp buttery potato topping for the ultimate comfort food.

Gluten-Free Cauliflower Cheeseย doesnโ€™t have to be an inferior version than one made with plain flour. This cauliflower cheese is quick and easy to make. It's rich, creamy, cheesy and infused with roasted garlic, dijon mustard and a final stir of crรจme fraiche. It's always a big hit if you serve it as a vegetarian main meal or as a delicious side dish to your roast dinner.

This Gluten-Free Toad in the Hole recipe is total British classic beloved by the whole family. Easy to make with a quick batter and no resting time. This recipe is made without cornflour and instead this simple batter uses easy to find rice flour and tapioca starch for a lovely rise and light crunchy golden brown crust.ย 

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A serving dish of Gluten-Free Tuna Pasta Bake showing creamy cheesy crispy top.

Creamy Gluten-Free Tuna Pasta Bake

Warm and comforting, this Gluten-Free Tuna Pasta Bake is the ultimate family dinner. Made with gluten-free pasta that wonโ€™t go mushy, a creamy cheese sauce and a golden crispy topping
Prep Time 30 minutes
Cook Time 25 minutes
Total Time 55 minutes
Course Main Course
Cuisine British
Servings 6
Calories 496 kcal

Ingredients
  

  • 300 g gluten-free pasta
  • 4 tomatoes - large
  • 600 g whole milk
  • 40 g cornflour
  • ยฝ teaspoon salt
  • โ…› teaspoon black pepper
  • โ…› teaspoon ground nutmeg
  • 125 g cheese - I use a mix of cheddar and gruyere
  • 100 g cream cheese
  • 1 tablespoon sundried tomato paste
  • 3 cloves garlic - peeled and crushed
  • 1 teaspoon Dijon mustard
  • 1 teaspoon honey
  • ยฝ teaspoon chilli flakes
  • 200 g tuna - drained weight
  • 75 g sweetcorn - drained
  • Fresh parsley - roughly chopped
  • 30 g gluten-free breadcrumbs

Instructions
 

  1. Pre-heat the oven to 200ยฐC / 180ยฐC fan assisted / gas mark 6 / 400ยฐF.
  2. Bring a large pan of salted water to the boil then add the pasta. Bring back to a boil then cook for 5 minutes. Drain and set aside.
  3. Make a shallow cross at the base of each tomato then place in a large bowl and cover with just-boiled water. Allow to rest in the water for 5 minutes. Remove the tomatoes with a slotted spoon, peel off the skin (discard) and dice the tomato flesh. Set aside whilst you prepare the sauce.
  4. Make the white sauce base by whisking the cornflour with the whole milk in a cold saucepan until smooth.
  5. Add the black pepper, salt and nutmeg then place on the heat and bring up to a gentle simmer, whisking all the time to avoid lumps.
  6. Turn the heat down to the lowest setting and tip in the tomatoes, mixing into the sauce.
  7. Stir in half the cheddar (75g) and the cream cheese and keep stirring until melted.
  8. Add the sundried tomato paste, garlic, dijon mustard, honey and chilli flakes and mix into the sauce until well combined. Keep at a low simmer for just a couple of minutes so the ingredients have time to get to know each other then turn off the heat.
  9. Take a large mixing bowl and pour the sauce into it. Add the tuna, sweetcorn and parsley and mix together. Finally stir in the pasta until everything is well combined.
  10. Pour the pasta and sauce into a large baking dish then sprinkle with the rest of the cheese and the breadcrumbs.
  11. Bake for 25 minutes. Remove from the oven and allow to rest for 10 minutes before serving.

Notes

Gluten-Free Pasta. The brands that hold their shape and cook perfectly with the most consistency are those which include a high protein packed flour (like quinoa or chickpea) in the blend, alongside a wholegrain flour (like rice flour or buckwheat). I like Sainsburys Free From Penne or Garofaloโ€™s Penne. You can use fusilli if you prefer.
Pasta Troubleshooting. If your pasta is too mushy it has been overcooked. Hard pasta means undercooked. Different brands of pasta (which have varying ingredients) might cook at slightly different speeds. However, I have found the timings given in this recipe should produce consistently perfectly cooked pasta. If the brand of pasta you used felt too soft then next time you can try initially blanching the pasta for 1-2 minutes less time.
โœจAs gluten-free pasta tends to overcook quite quickly you will find that re-heated leftovers will produce softer pasta.
Freezing or Making Ahead. If you are making this ahead of time or preparing for freezing then prepare the dish right up until the final bake. Store the unbaked meal in a food storage bag or airtight container. You can store in the fridge for up to 2 days before finishing the dish. Or you can store in the freezer for up to 3 months. Thaw overnight in the refrigerator before finishing the dish.
Vegetables. You can also stir in frozen peas or a handful of spinach alongside the sweetcorn to amp up the veg.
Baking dish. The dish used to recipe test is 23 x 23 x 5.8cm and holds 2.3litres.
Ingredient measurements: Please note when you see โ€˜gramsโ€™ listed as opposed to โ€˜millilitres,โ€™ or any other term of measurement, that is not incorrect. I weigh all of my ingredients, including liquids, for accuracy.
US customary measurements: These US measurements for the ingredients provided are based on a conversion calculator. This recipe was tested with metric measurements and I recommend using a digital scale to weigh ingredients for the most accurate results. READ MORE >>> Why you should always weigh vs measuring with cupsย 
Nutrition information: Please note that the nutrition information provided below is an estimate based on an online nutrition calculator. It will vary based on the specific ingredients you use. Please seek a professional nutritionistโ€™s advice for further clarification.
The nutrition serving is for 1 serving, assuming you are serving it into 6 portions.ย 

Nutrition

Calories: 496kcalCarbohydrates: 64gProtein: 20gFat: 18gSaturated Fat: 9gPolyunsaturated Fat: 1gMonounsaturated Fat: 4gCholesterol: 62mgSodium: 558mgPotassium: 480mgFiber: 3gSugar: 9gVitamin A: 1462IUVitamin C: 12mgCalcium: 305mgIron: 1mg
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