Cheese Squares

1 - 18 1/2 box yellow cake mix
4 eggs
1/2 cup melted butter
8 oz. cream cheese softened
1 lb. box Confectioner's sugar

Combine cake mix, 1 egg and butter. Press into 9" X 13" pan. Mix cream cheese, confectioner's sugar and 3 eggs. Pour over cake mixture. Bake 350 degrees for 35 to 40 minutes.