1 cup rolled oats
1 (12 ounce) package cream cheese, softened
1 (3 ounce) package instant vanilla pudding mix
1 (8 ounce) container frozen whipped topping, thawed
1/2 cup heavy cream
Preheat oven to 375 F. Grease one 9x13 inch baking pan.
Toast or chop cake mix and set aside. In a medium bowl, beat cream cheese until creamy. Spread mixture over the white cake layer, and press edges together to form a dome.
Bake in the preheated oven for 40 to 50 minutes, or until a toothpick inserted into the center comes out clean. Let cool completely before cutting into squares.