Step 1

Preheat oven to 350 degrees F.

Step 2

Combine the cake mix, egg, and 8 TBL butter and mix well with an electric mixer. Press the mixture into the bottom of a lightly greased 9x13 baking pan.

Step 3

In a large bowl, beat the cream cheese until smooth. Add the eggs, 8 TBL butter and vanilla and beat together.

Step 4

Next, add the powdered sugar and mix well. Spread over cake batter and bake for 40 to 50 minutes. Make sure not to over bake as the center should be a little gooey.