Ingredients
Method
- Preheat oven to 350°F and grease and line two 8-inch cake pans.
- In a medium bowl, whisk together cake flour, baking powder, and sea salt.
- In a large bowl, beat butter, oil, sugar, and cookie butter until light and fluffy.
- Add eggs one at a time, then mix in vanilla extract and sour cream.
- Alternate adding dry ingredients and milk until the batter is smooth.
- Divide batter evenly between prepared pans.
- Bake for 28-32 minutes until the centers are set and a toothpick comes out clean.
- Cool cakes completely before frosting.
- For the frosting, beat butter and cookie butter until fluffy.
- Gradually add powdered sugar, then mix in heavy cream and sea salt until smooth.
- Frost the cake layers and decorate with Biscoff cookie crumbs.
Notes
Store cake covered at room temperature for up to 2 days or refrigerated for up to 5 days. Let chilled slices sit at room temperature briefly before serving for the best texture. Avoid overbaking to keep the cake soft and moist.
