Servings: 12
Vanilla Cake:
Preheat oven to 350°F. Grease and flour three 6" cake pans, then line them with parchment paper.
In a bowl, mix flour, baking powder, and salt. Set aside.
In a stand mixer, beat butter until smooth. Add sugar and beat until fluffy.
Add eggs one at a time, then vanilla. Mix well.
Alternately add flour mixture and milk, starting and ending with flour. Don't overmix.
Spread batter evenly into pans and bake for 25-30 minutes until a toothpick comes out clean. Let cakes cool for 10 minutes on wire racks.
Biscoff Buttercream:
Whisk egg whites and sugar until combined in a stand mixer.
Heat mixture over a water bath until hot and no longer grainy.
Whisk on medium-high until stiff peaks form and mixture is cooled.
Switch to paddle attachment. Slowly add cubed butter and mix until smooth.
Mix in cookie butter until smooth.
Assembly:
Place one cake layer on a plate. Spread a thin layer of crunchy cookie butter, then 2/3 cup of frosting.
Repeat with remaining layers. Apply a thin coat of frosting all over the cake and chill for 20 minutes.
Frost and smooth the sides. Decorate with rosettes and crushed Speculoos cookies if desired.
Calories: 608kcal | Carbohydrates: 65g | Protein: 6g | Fat: 37g | Saturated Fat: 23g | Cholesterol: 140mg | Sodium: 201mg | Potassium: 178mg | Fiber: 1g | Sugar: 47g | Vitamin A: 116IU | Calcium: 77mg | Iron: 1mg
Keyword biscoff cookie butter cake recipe, cookie butter cake recipe