1 pkg. yellow cake mix
1 stick (1/2 c.) butter
1 egg

Mix together cake mix (just the mix, not the other ingredients called for on the box) with butter and 1 egg. Pat into an ungreased 9x13 inch cake pan.

1 (8 oz.) pkg. cream cheese, softened
2 eggs
1 (1 lb.) box confectioners' sugar
1 tsp. vanilla

Cream together cream cheese, 2 eggs, powdered sugar and vanilla. Pour over cake mixture, spreading to the edges.

Bake at 350°F for 35 minutes.