Step 1

Preheat oven to Grease the bottom only of a 9x13 pan.

Step 2

In a large bowl, mix the dry cake mix, milk, butter and eggs on medium speed for 2 minutes. Spread the batter in the pan, using a spatula to evenly distribute it.

Step 3

In a small bowl, microwave the cookie butter for 30 seconds (to make it pourable.) Pour the melted cookie butter all over the top of the cake batter.

Step 4

Use a butter knife to swirl the cookie butter into the cake batter.

Step 5

Bake for 30-32 minutes or until golden brown around the edges and a toothpick inserted in the center comes out clean.

Step 6

Cool completely before frosting.

Step 7

To make the frosting, cream together the cream cheese and butter. Then mix in the cookie butter and vanilla.

Step 8

Add the powdered sugar one cup at a time and mix. Add a splash of milk if the frosting feels too thick.

Step 9

Spread over the top of the cooled cake and top with crumbled Biscoff cookies and/or cookie halves.