Ingredients
Method
- Preheat oven to 350°F (175°C). Mix dry ingredients and set aside.
- Cream butter and sugars, then add egg whites, buttermilk, oil, and vanilla. Combine with dry ingredients.
- Divide batter into pans and bake for 45 minutes. Cool completely.
- Beat butter, vanilla, salt, and powdered sugar until fluffy. Mix in heavy cream and cookie butter to make frosting.
- Assemble cake layers, spread frosting, and sprinkle with chopped Biscoff cookies. Chill before serving.
Notes
For best results, chill the cake before serving to set the frosting.
