Ingredients
Method
- yers:Preheat the oven to 350°F (177°C). Grease and line three 6-inch round cake pans with parchment paper.In a bowl, whisk together cake flour, baking powder, baking soda, and salt.In another large bowl, cream together the butter, cookie butter, granulated sugar, and brown sugar until light and fluffy (2–3 minutes).Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.Mix in sour cream until smooth.Add dry ingredients alternately with milk, beginning and ending with the dry ingredients.Divide the batter evenly between the prepared pans and bake for 28–32 minutes, or until a toothpick inserted comes out clean.Cool cakes in pans for 10 minutes, then transfer to a wire rack to cool completely.
- Make the Buttercream:In a large bowl, beat the butter and cookie butter together until smooth and fluffy (2–3 minutes).Add vanilla and salt. Gradually beat in powdered sugar.Add cream or milk and mix until smooth and creamy.
- Assemble the Cake:Level the cake layers if needed.Place one cake layer on a serving plate and spread with frosting. Repeat with remaining layers.Frost the outside of the cake, smoothing it with an offset spatula.Decorate with crushed Biscoff cookies and drizzle with warmed cookie butter, if desired.
Notes
- Use a kitchen scale for best accuracy when measuring ingredients, especially flour and sugars.
- Chill cake layers before frosting for easier assembly and cleaner edges.
- This cake stores well in the fridge for up to 5 days; bring to room temperature before serving.
- You can make the frosting ahead and store it in the fridge—just let it soften and re-whip before using.