1 (18 oz.) box yellow cake mix
1 egg, beaten
1/2 c. butter, melted
2 eggs, beaten
1 tsp. vanilla extract
2 (8 oz.) pkg. cream cheese, softened
1 (16 oz.) box powdered sugar (reserve some to sprinkle on top)

Mix first 3 ingredients, and press into a 9x13 inch ovenproof dish. Mix remaining ingredients until smooth. Spread over cake mix. Bake at 325 degrees for 1 hour. Sprinkle powdered sugar over top and cut into bars. Serves 12-16.