1 (18 oz.) yellow cake mix
4 eggs, divided (yolks)
1/2 c. butter, melted
1 (8 oz.) pkg. soft cream cheese
1 (1 lb.) box powdered sugar

Grease and flour 9"x13" pan. Combine cake mix and 1 egg with butter and press into pan. Combine cream cheese, sugar and remaining egg. Pour over cake mixture. Bake at 350 degrees for 40 minutes. Cool 30 minutes and cut into squares.