
Indulge in the ultimate treat with this moist Biscoff layer cake, featuring a spiced sponge and silky cookie butter buttercream. Topped with a luscious caramel drizzle and crunchy Lotus biscuits, it's a showstopper for any occasion.
Preheat your oven to 180°C (160°C fan/gas 4). Line the bases of two 20cm round cake tins with baking parchment. In a large mixing bowl, beat 175g of softened unsalted butter and the light brown soft sugar with an electric whisk for about 2 minutes until the mixture is light and fluffy.
Add 150g of the Biscoff spread to the butter mixture and beat again until well combined. In a separate jug, whisk together the yogurt, eggs, and vanilla extract. Pour this into the main bowl along with the self-raising flour, ground cinnamon, and a pinch of salt.
Beat the batter for 1-2 minutes until smooth and fully incorporated. Divide the mixture evenly between the two prepared tins and level the tops with a spatula. Bake on the middle shelf for 30 minutes until the sponges have risen and a skewer inserted into the center comes out clean. If the batter is still wet, bake for an additional 5 minutes.
Allow the cakes to cool in their tins for 15 minutes, then carefully turn them out onto a wire rack to cool completely before frosting.
To make the icing, beat 200g of unsalted butter, half of the icing sugar, and 100g of Biscoff spread together until smooth. Add the remaining icing sugar and continue beating until light and airy. Warm the caramel or dulce de leche in the microwave for 30 seconds to reach a drizzling consistency.
Assemble the cake by sandwiching the two sponges together with half of the icing and a light drizzle of caramel. Spread the remaining icing over the top and sides of the cake. Finish by drizzling the rest of the caramel over the top and sprinkling with the crushed Lotus biscuits.
For the smoothest buttercream, ensure your butter is truly at room temperature before mixing. If you want a neater finish, use a serrated knife to trim any domes off the cooled sponges before layering. This cake stays moist and delicious for up to four days when stored in an airtight container.




