1 (18 oz.) box yellow cake mix
1 beaten egg
1/2 c. melted butter
2 beaten eggs
1 tsp. vanilla
2 (8 oz.) pkgs. softened cream cheese
1 (16 oz.) box powdered sugar (reserve some for topping)

Preheat oven to 325 degrees. Mix cake mix, 1 egg, and butter. Press into greased 9 x 13 inch ovenproof dish. Mix 2 eggs, vanilla, cream cheese, and powdered sugar until smooth. Spread over cake mix layer and bake for 1 hour. Sprinkle with reserved powdered sugar and cut into bars.