
Indulge in this moist and fluffy sponge cake layered with a rich, velvety caramel buttercream. Perfect for birthdays or afternoon tea, this simple yet impressive dessert is finished with a luscious caramel drizzle and crunchy toffee bits.
Preheat your oven to 180°C (160°C fan/gas 4). Grease two 20cm springform cake tins with butter and line the bases with baking parchment.
In a large mixing bowl, combine the softened butter, golden caster sugar, and light brown soft sugar. Beat with an electric whisk for several minutes until the mixture is pale, light, and fluffy.
Add the vanilla extract and the eggs one at a time. To prevent the mixture from curdling, beat in a spoonful of the flour along with each egg.
Gently fold in the remaining self-raising flour and the milk until the batter is smooth and well combined.
Divide the batter evenly between the two prepared tins. Bake for 25–30 minutes until the sponges are golden, spring back when lightly pressed, and a skewer inserted into the center comes out clean.
Cool the cakes in their tins for a few minutes, then carefully turn them out onto a wire rack to cool completely. They must be cold before icing to prevent the buttercream from melting.
For the icing, whisk the softened butter and icing sugar together in a clean bowl for a few minutes until the mixture is light and airy.
Briefly whisk in the caramel sauce. If the icing feels too stiff, add 1 tablespoon of boiling water to loosen the consistency.
Place one sponge on a serving plate and spread half the icing over it. Top with the second sponge. Spread the remaining icing over the top, smoothing it with a palette knife or the back of a spoon.
Drizzle with the extra 3 tablespoons of caramel sauce (warm it slightly in the microwave if it's too thick). Scatter the toffee, chocolate, or caramel pieces over the top to finish. Add candles or edible glitter if celebrating!
For the best results, ensure your butter is at room temperature before starting. If you want a 'salted' caramel flavor, add a generous pinch of sea salt flakes to the buttercream. This cake stores well in an airtight container in a cool place for up to 3 days.




