Gluten-Free Coffee and Walnut Cake

A beautifully simple gluten-free Coffee and Walnut Cake made with teff flour and walnut flour.

gluten-free Coffee and Walnut Cake on a wooden board

At the beginning of summer I start thinking of crowd pleasing bakes to donate to the various cake stalls coming our way. I usually make a few cake promises to the school fairs, village fetes and neighbourhood festivals. These cake stalls make their money by selling good homely British baking and I’m always happy to contribute.

Not counting my own market stall I was a Women’s Institute member (and President) for many years and know my way around a local cake stall. At these local festivals there is always an enthusiastic crowd circling the cake stall and there are a certain few cakes that the customers expect to see.

gluten-free Coffee and Walnut Cake on a wooden board

When I would help co-ordinate the volunteers and bakers for an upcoming cake stall we would accept any offering. However we also had a checklist of bakes that absolutely had to be included:

Victoria Sponge
Brownies
Lemon Drizzle Cake
Chocolate Cake
Flapjacks
Carrot Cake

And you betcha there had better be a Coffee and Walnut Cake. Riots are not usually on the agenda at the Crouch End Festival.

At the same time as the resolutely traditional bakes there has in recent years been a call for gluten-free, vegan and sugar-free cakes. These are usually the ones I donate as you can imagine. I love blending traditional recipes with modern alternative flours to serve both needs.

This Coffee and Walnut Cake is based around a classic recipe. However it has been modernised through using flavourful flours which gives so much more personality to this British stalwart. And makes it gluten-free to boot.

gluten-free Coffee and Walnut Cake on a wooden board

How to make a Gluten-Free Coffee and Walnut Cake

The key to a delicious gluten-free Coffee and Walnut Cake is:

  • Teff flour

If you don’t know anything about teff flour then visit this post which dives deep into the subject. It is an incredibly tasty flour with hints of molasses and spices. An absolute natural pairing to the coffee and nuts in this cake, adding a beautiful complexity of flavour.

process shots of making a gluten-free coffee and walnut cake

We blend the teff flour with:

  • Tapioca Flour – for helping the cake hold together so it’s not dry and crumbly
  • Walnut Flour – for the unmistakable taste of walnuts. We grind walnut halves into a ‘flour’ to give the cake a moist crumb. The flour allows the walnut flavour to permeate the whole cake.

ALTERNATIVE FLOUR: Buckwheat flour also works beautifully in this cake and gives it more of an earthy taste. Just swap the teff for equal amounts of buckwheat if you like that idea.

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process shots of making a gluten-free coffee and walnut cake

This Gluten-Free Coffee and Walnut Cake is a straightforward cake to make and uses the creaming method for a beautifully light sponge.

  1. Cream the butter and sugar until light and fluffy.
  2. Add the egg one at a time.
  3. Grind the walnuts in a food processor.
  4. Mix the walnuts with the rest of the dry ingredients.
  5. Add the dry ingredients to the wet.
  6. Divide between two 8 inch cake tins.
  7. Bake for 20-25 minutes then cool.
  8. For the icing beat the butter and icing sugar until light and creamy.
  9. Add the coffee and salt to the icing then ice the cake.

Bakers Tips:

  • When grinding your walnuts make sure you don’t take them too far. If they start to turn into walnut butter then the walnuts will have released too much oil and will make the cake greasy. The walnuts should be like crumble.
  • When making your icing you want to beat the butter and icing sugar for about 6-8 minutes so the icing is ultra light and creamy.

Slices of gluten-free Coffee and Walnut Cake on a wooden board

What kind of coffee do you use in Coffee and Walnut Cake?

For this cake we use barista style instant coffee as it’s so easy. You can add it straight in without mixing with water. I like the Nescafe Azera brand and use this whenever I need a fresh coffee flavour.

There is no difference in the cake sponge at all, just a lovely clean coffee taste. It’s beautiful in the icing too, flecking like tiny polka dots against the white icing.

How long will Gluten-Free Coffee and Walnut Cake keep?

This Gluten-Free Coffee Cake will keep in an airtight tin for up to three days.

Cut slice of a gluten-free Coffee and Walnut Cake

If you are looking for easy gluten-free bakes to take to a cake or bake sale then hop on over to the following recipes:

The Ultimate Popcorn Rocky Road
Red Velvet Cake
No-Bake Chocolate Peanut Butter Crispy Bars

If you make this Gluten-Free Coffee and Walnut Cake then please leave a comment below and/or give the recipe a rating. If you then go on to use this recipe as a launch pad for your own baking creation then I’d also love it if you’d share it and tag me on Instagram. It is so lovely for me to see your versions and variations of my recipes.

gluten-free Coffee and Walnut Cake on a wooden board

Gluten-Free Coffee and Walnut Cake

A beautifully simple gluten-free Coffee and Walnut Cake made with teff flour and walnut flour.

Print Pin Rate
Course: Cake
Cuisine: British
Keyword: gluten-free coffee and walnut cake recipe
Prep Time: 25 minutes
Cook Time: 20 minutes
Servings: 10 people
Calories: 710kcal
Author: Georgina Hartley

Ingredients

  • 200 g soft light brown sugar
  • 200 g unsalted butter room temperature
  • 4 eggs medium
  • 125 g teff flour
  • 100 g walnuts plus extra to decorate
  • 50 g tapioca flour
  • teaspoons baking powder
  • ¼ teaspoon salt
  • 2 tablespoons instant coffee powder

Icing

  • 300 g unsalted butter room temperature
  • 300 g icing sugar
  • 1 tablespoon instant coffee powder
  • 1/8 teaspoon salt

Instructions

  • Pre-heat the oven to 180/ 160 fan and line and grease 2 x 20cm round cake tins.
  • Beat the sugar and butter together until light and fluffy.
  • Add the eggs one at a time until combined.
  • Place the walnuts in the food processor and grind them until they form fine crumbles.
  • Pour the ground walnuts into a large bowl then whisk to mix with the teff flour, tapioca flour, baking powder, salt and coffee powder.
  • Add the flour mix to the batter and mix until completely combined.
  • Divide the batter between the cake tins and bake for 20-25 minutes until an inserted toothpick comes out clean.
  • Remove from the oven and leave the cake layers to cool completely before icing.

Icing

  • Beat the butter together with the icing sugar and mix until incredibly light and fluffy.
  • Mix in the espresso powder and salt.
  • To assemble, divide the icing between the middle and the top of the cake and decorate with walnut halves.

Notes

  • WALNUTS: If your walnuts start to turn to butter in the corners of the food processor then you have taken them too far.
  • The instant coffee powder I use is Nescafe Azera.
  • This cake will keep for up to 3 days in an airtight container.

Nutrition

Calories: 710kcal | Carbohydrates: 66g | Protein: 6g | Fat: 49g | Saturated Fat: 27g | Cholesterol: 173mg | Sodium: 128mg | Potassium: 261mg | Fiber: 2g | Sugar: 49g | Vitamin A: 26.9% | Vitamin C: 0.2% | Calcium: 11.3% | Iron: 10.5%

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Collage of images of a gluten-free coffee and walnut cake

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