Gluten-Free Funfetti Cupcakes
This post contains affiliate links. Please read my disclosures.
Delicious gluten-free funfetti cupcakes made in one bowl with an easy buttercream. Light, colourful and perfect for birthdays and parties.

Well, who would have thought that adding a few sprinkles to a deliciously light and fluffy vanilla cupcake would be such a resounding hit!
Itโs a simple tweak to an already perfect cupcake but goodness do children (and adults!) come flocking. These cupcakes are ideal for birthdays and parties when you need a little extra pizzazz on the dessert table. I will only say that you need the sprinkles to be gorgeously bright so be choosy over which you buy. Often the ones from the supermarket (in the UK) can be a little dull so specialist cake decorating shops or online suppliers will garner you better results. And make sure your sprinkles are gluten-free as well as often they are not, so check your labels.
All that said, these cupcakes are super simple. The vanilla cupcakes are just one-bowl and oil based so you donโt need to be whipping your batter to cream your ingredients for an age. The ingredients are carefully balanced so they make a good thick batter which is perfect for suspending the sprinkles. And the buttercream is my perfectly easy classic buttercream icing which is a cinch to whip up.
Iโll show you the very quick and easy steps, point you in the right direction of the best sprinkles and piping tips but honestly youโll be thrilled how straightforward these simple yet incredibly successful cupcakes are.

What are Funfetti Cupcakes?
Funfetti Cupcakes are definitely an American invention but weโre using British ingredients here and a gluten-free flour you can mix up whichever side of the Atlantic you fall on. They are the best vanilla cupcake in your repertoire jazzed up with a handful of sprinkles to entice everyone over to your dessert table. Sprinkles are baked into the cupcake batter and adorn the top of the cupcakes too and are guaranteed to be smile inducing.

Why Youโll Love These Gluten-Free Funfetti Cupcakes
- The deep cinnamon richness of those buttery caramelised apples!!
- Using easy to prepare brown butter for a gorgeous deep toasted nutty flavour in your muffins.
- Perfectly soft muffins that hold together beautifully with lovely flavour thanks to the carefully chosen flours used in the right ratios.
- Soft fluffy muffin, topped with the soft apples and scattered over with crisp and crunchy streusel for lovely texture contrast.
- No xanthan gum needed.
Watch The Video
Sometimes it helps to see a visual of what I'm talking about. So watch the video to see what it looks like to make your Funfetti Cupcakes.
Ingredients Needed

Rainbow Sprinkles. The sprinkles you can buy from your local UK supermarket are often dull in colour but also not gluten-free. Therefore you will need to shop around for your sprinkles and you are best to try Amazon or a specialist cake supplier.
Eggs. This recipe uses medium size, about 60g each with shell (50g each without shell). These are often classified as large eggs in the US. I recommend weighing your eggs to ensure the correct amount.
Gluten-Free Flour โ FTL Blend. This recipe uses my Homemade Gluten-Free All Purpose Flour which works really well here as the flour ratio has been carefully tested to ensure the mix between wholegrain flours and starchy flours is balanced. This also means we donโt need to use xanthan gum as the blend is strong enough and produces a well structured and textured bake which can hold together without needing any extra binders.
This flour blend is a mix of 4 different flours: sweet rice flour (glutinous rice flour), sorghum flour, oat flour, tapioca flour (tapioca starch).
Caster sugar. Itโs a fine white baking sugar available in the UK. Regular white granulated sugar can be substituted.
Olive oil. This is my preferred oil in cakes rather than vegetable oil or coconut oil. But to avoid a strong flavour use a flavourless mild and light olive oil.
Milk. Use whole milk or a plant-based milk if needed.
Baking powder. A leavening agent which causes the cake to rise and become light and fluffy. Do check your baking powder is gluten-free before use.
Vanilla extract. Weโre using vanilla in both the sponge and the buttercream and itโs the main flavour so we need a good quality extract, I like Nielsen Massey.
Unsalted butter. We need unsalted butter for the buttercream so we can control the salt content. You can use a plant-based butter but then you wonโt need to add any extra milk as itโs usually softer.
Icing sugar (powdered sugar). We need this for the buttercream. I prefer to use icing sugar rather than caster sugar in buttercreams as it dissolves more easily which means an easy to achieve smooth texture which can whip up like a dream.
Salt. I like to use kosher salt in my baking as it has a round gentle flavour. Using salt in your baked goods lifts and sharpens all the other flavours.

Equipment Needed
All of these items are helpful for a smooth baking process, but you can easily substitute with whatever you have on hand.
- 1 large mixing bowl.
- Electric mixer (or whisk). You can also make this cake using a wooden spoon and a strong mixing arm.
- 1 x regular sized 12-hole muffin tin for baking the cupcakes.
- 5cm cupcake cases
- Silicone spatula for scraping the bowl.
- Large 2 litre jug for pouring out the batter into the cases.
- Wire rack for cooling the cupcakes.
- Sieve for sifting icing sugar.
- Recyclable piping bags
- Open star piping tip 1M

How To Make Gluten-Free Funfetti Cupcakes
For full recipe instructions go to the recipe card at the end of this post.
Pour the caster sugar, olive oil, eggs, milk and vanilla into a large mixing bowl. Mix together using a handheld electric whisk or a simple balloon whisk.

Add the gluten-free flour, baking powder and salt into the bowl and continue to whisk until smooth.

Finally stir in the rainbow sprinkles until evenly dispersed.

Pour the cupcake batter evenly between 18 cupcake cases until ยพ full. Bake the cupcakes for 25 minutes.

Whip softened butter and icing sugar together until very soft, light and creamy. Add salt, vanilla and milk and mix briefly to combine into the buttercream.

Once the cupcakes are completely cool, pipe or spread the buttercream generously over the top of each one. Finish with a few more rainbow sprinkles to decorate.

Expert Tips
Use fresh cupcake cases meaning ones that are still tightly shaped and not starting to fan out as these will loosen from your cakes after baking.
Make sure not to overfill your cupcake cases. They should be about ยพ full.
If you only have one 12-hole regular muffin tin then thatโs fine. Gluten-free batter is okay if left to rest. Bake up your first batch of cupcakes, remove them from the tin, wash and dry the tin thoroughly then they are ready for you to bake your final 6 cupcakes.
That said, if you have a 6-hole muffin tin then you can bake at the same time so it is quicker.
You can check to make sure your cupcakes are baked by inserting a wooden or metal skewer into the centre of one of the cakes. It should come out clean of any crumbs.
Remove the cakes immediately from the baking tin onto a wire rack so they stop cooking and can start cooling straightaway.
Allow the cupcakes to cool for at least 1 hour before applying your buttercream.

7 Simple Steps To Successful Gluten-Free Baking
Your Quick Start Guide to start seeing results straight away. Perfect for both beginner or more seasoned bakers.

FAQs
Not at all. Often the branded sprinkles you can buy from UK supermarkets are not currently gluten-free so do check your labelling.
This is an easy recipe to make dairy-free as for the sponge recipe you just need to make sure that you are using a plant-based milk. The buttercream can be made dairy-free if you use a plant-based butter (I like Flora Unsalted Block Butter Alternative). However, they are often looser in texture once whipped so you wonโt need to use the extra milk in the buttercream.
There are a couple of reasons why the cases may be peeling away but it is always due to moisture content. These are some ways you can help prevent it:
Cupcake cases. Use greaseproof paper cases or foil-lined cases for the best results. These are more durable than thin paper liners. Also use fresh liners that are still tightly shaped.
Storage. Donโt store the cupcakes in a warm environment. The cooler the room the better. Although the fridge can lead the cakes to dry out so a cool dark place at room temperature is best.
These cupcakes are beautifully moist as they use a balanced blend of gluten-free flours. Store any leftover cupcakes in an airtight container. They are usually fine at room temperature for up to 3 days as long as itโs not a warm environment. Iโm in the UK and my kitchen is usually quite cool. If stored in the fridge they will dry out quicker but always make sure they are in an airtight container.
This recipe is for a standard sized cupcake and the liners measure 2 inches (5cm) at the base of the liner and are about 1.25 inches (4cm) tall.
These cupcakes were decorated using a closed star piping tip 2D. However, you can use your favourite large tip. Make sure to use metal tips over plastic tips which give much better results.
Use a standard muffin tin or cupcake tin. I recommend using an aluminium baking tin which gives more even baking results. The one used in testing this recipe is 24.46 x 33.02 x 3.18 cm.

More Gluten-Free Cupcakes Youโll Love
Gluten-Free Carrot Cake Cupcakes are very quick and easy to make. They are perfectly moist, light and fluffy and decorated with my go-to cream cheese buttercream and frosted candied carrots.
Gluten-Free Vanilla Cupcakesย are made in a classic buttery bakery style. They are fluffy, moist and rich with vanilla. So easy to make all in one bowl without any need for xanthan gum.
Easyย Gluten-Free Fairy Cakesย are light, fluffy little cakes which are perfect for baking with kids. Simply made with gluten-free flour, ground almonds (almond flour).
Enter your email below to get this recipe sent to your inbox plus get new recipes, baking tips, and updates.
Gluten-Free Funfetti Cupcakes
Ingredients
- 300 g caster sugar
- 200 g olive oil
- 4 eggs
- 180 g whole milk
- 1 tablespoon vanilla extract
- 400 g gluten-free flour - FTL Blend
- 2 teaspoons baking powder
- ยฝ teaspoon sea salt
- 120 g rainbow sprinkles
Classic Vanilla Buttercream Icing
- 800 g icing sugar - sifted
- 500 g unsalted butter - softened
- 1 tablespoon vanilla extract
- ยฝ teaspoon kosher salt
- 50 g whole milk
- 2 tablespoons rainbow sprinkles
Instructions
- Pre-heat oven to 180ยฐC / 160ยฐC fan assisted / gas mark 4 / 350ยฐF.
- Line a 12-hole and a 6-hole regular muffin tins with cupcake liners.
- Pour the caster sugar, olive oil, eggs, milk and vanilla into a large mixing bowl. Mix together using a handheld electric whisk or a simple balloon whisk.
- Add the gluten-free flour, baking powder and salt into the bowl and continue to whisk until smooth.
- Finally stir in the rainbow sprinkles until evenly dispersed.
- Transfer the cupcake batter to the large jug and pour the cupcake batter evenly between 18 cupcake cases until ยพ full.
- Bake the cupcakes for 25 minutes until golden brown or an inserted skewer is cleanly removed.
- Once the cupcakes are full baked then remove them from the muffin tin so they can fully cool on a wire rack before applying the buttercream.
Classic Vanilla Buttercream Icing
- Place softened butter in the bowl of a stand mixer (food mixer) and whip until ultra creamy and soft for about 5-6 minutes on a medium speed, scraping down the bowl every so often.
- Sift in the icing sugar 1 cup at a time. Stop the mixer each time to bring the bowl out, scrape down and then sift in the icing sugar and whip it into the butter on the lowest speed of the mixer.
- Once all the icing sugar has been added and youโve scraped the bowl down again so itโs all nicely mixed together, then continue to mix the icing sugar and butter on the lowest setting for 6-7 minutes.
- Add salt and vanilla and mix briefly to combine into the buttercream.
- With the mixer still running pour the milk in slowly and mix for a further 2 minutes to finish.
- Once the cupcakes are completely cool, pipe or spread the buttercream generously over the top of each one. Finish with a few more rainbow sprinkles to decorate.
Video
Notes
- Eggs. The eggs used in this recipe are medium size, 60g each with shell and 50g without shell. If you can't get hold of medium eggs I suggest you weigh the amount.
- Sprinkles. Always check your sprinkles are gluten-free.
- Gluten-Free Flour โ FTL Blend: This recipe uses my Homemade Gluten-Free All-Purpose Flour and I donโt recommend substituting. It is a balanced mix of wholegrain and starchy flours, eliminating the need for xanthan gum. The blend includes sweet rice flour, sorghum flour, oat flour, and tapioca flour, providing structure and texture without extra binders. For substitution tips, check the original post for this flour mix.
- These cupcakes were decorated using an Open star piping tip 1M.
- The liners you need are 2 inches (5cm) at the base of the liner and are about 1.25 inches (4cm) tall.
- Make sure not to overfill your cupcake cases. They should be ยพ full.
- Storing. You can keep the cupcakes in an airtight container at room temperature provided the environment isn't too warm. Otherwise store in the fridge. They will keep for about 3-5 days.
- Freezing. You can freeze the full cupcakes but if you are thinking of making ahead then it's easier to freeze sans buttercream. Place the uniced cupcakes on a baking tray and flash freeze for 2 hours. Transfer them to an airtight container and freeze for up to 2 months. You can ice the cupcakes from frozen. They only take about 1 hour to thaw out.


