Easy nut‑free vanilla birthday cake
A light vanilla sponge with silky buttercream — reliably nut‑free and perfect for birthdays or parties.
This is a dependable, nut‑free vanilla sponge that’s built for birthdays — takes classic flavours and turns them into a party cake without a hint of nuts. It’s forgiving, easy to personalise with colours or toppers, and keeps well.
Make it when you need a straightforward celebration cake that doesn’t require specialist ingredients. Use the buttercream for piping borders or a simple smooth finish — both look great and are stress‑free.
Ingredients
- 450 g unsalted butter — softened — total for cake and buttercream
- 225 g caster sugar
- 4 large eggs — room temperature
- 10 ml vanilla extract
- 225 g plain flour
- 10 ml baking powder
- 0 ml salt
- 60 ml whole milk — room temperature
- 500 g icing sugar
- 30 g sprinkles — for decoration
Equipment
- 20cm round baking tins (x2)
- electric hand mixer or stand mixer
- cooling rack
- offset spatula or palette knife
- piping bag and plain nozzle (optional)
Instructions
Preheat the oven to 180°C fan/200°C conventional. Grease two 20cm round baking tins and line the bases with baking paper.
Cream 225g of the softened unsalted butter with the caster sugar until pale and fluffy — about 3 minutes with an electric mixer (or 5–7 minutes by hand).
Beat in the large eggs one at a time, adding a spoonful of the flour if the mixture threatens to curdle. Stir in the vanilla extract.
Sift together the remaining plain flour, baking powder and salt. Fold the dry ingredients into the butter mixture in two additions, alternating with the whole milk — fold just until combined.
Divide the batter evenly between the two prepared tins, smooth the tops and bake in the centre of the oven for 25–30 minutes until golden and a skewer comes out clean.
Leave the cakes to rest in their tins for 10 minutes to firm up.
Turn the cakes out onto a cooling rack and leave to cool completely — about 40 minutes.
Make the buttercream while the cakes cool. Beat the remaining 225g unsalted butter until smooth and pale (about 2 minutes), then gradually beat in the icing sugar. Add the remaining 1 tsp vanilla extract and 1–2 tbsp whole milk to reach a spreadable consistency.
If needed, level the cake tops with a serrated knife. Place one cake on a board, spread a third of the buttercream over the top, then place the second cake on top and apply a thin ‘crumb coat’ layer of buttercream all over.
Chill the crumb‑coated cake in the fridge for 30 minutes to set the buttercream.
Finish with the remaining buttercream: smooth with an offset spatula or pipe a design. Scatter the sprinkles over the top while the icing is slightly soft so they adhere.
Leave the decorated cake at cool room temperature for 10–15 minutes before serving, or store in an airtight cake tin in the fridge for up to 3 days.
Tips
- Weigh your ingredients — sponge recipes like this love accuracy more than rule‑of‑thumb measures.
- Soften butter at room temperature but do not melt it; if it’s too soft, pop it in the fridge for 10 minutes before using.
- If the top browns too quickly, loosely cover with foil for the last 10 minutes of baking.
- For extra stability with tall decorations, chill between layers for at least 30 minutes so the buttercream firms up.
- Make the sponge a day ahead and freeze uniced layers wrapped well; defrost overnight in the fridge before decorating.
Substitutions
plain flour → 1:1 gluten‑free plain flour blend, same weight
Noticeably differentunsalted butter → dairy‑free block spread (use the same weight), best if designed for baking
Noticeably differentwhole milk → oat milk or soy milk, same volume
Stays closesprinkles → fresh berries or citrus zest for decoration
Noticeably different
Nutrition
Per serving · estimated
- 616
- Calories
- 5 g
- Protein
- 78 g
- Carbs
- 32 g
- Fat
- 1 g
- Fibre
- 64 g
- Sugar
- 140 mg
- Sodium
FAQ
Can I bake this as one large cake instead of two tins?
Yes — use a single larger tin (for example a 25–23cm tin) and expect a longer bake time (check from 35 minutes). Always test with a skewer for doneness.
How do I know the sponge is cooked?
The top should be golden and spring back when lightly pressed; a skewer inserted in the centre should come out clean or with a few dry crumbs.
Can I make the cake ahead?
Yes — bake layers up to 48 hours ahead and keep wrapped in the fridge, or freeze for up to 2 months. Defrost in the fridge overnight before icing.
Is this recipe guaranteed nut‑free?
The recipe itself contains no nuts, but always check labels on bought ingredients (sprinkles, baking powder, margarine) and avoid cross‑contamination if cooking for someone with a severe allergy.
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