Lemon Bars -Sally

1 box lemon cake mix
1 cube margarine or butter, melted
1 egg
1 (16 oz.) package powdered sugar
2 eggs
1 (8 oz.) package cream cheese

Stir the cake mix, butter, and 1 egg until smooth. Pat into a 9x13 pan. Beat remaining ingredients together for 5 minutes, then pour over first mixture. Bake at 350° for 40-45 minutes. When cool sprinkle with powdered sugar, then cut into squares, nicely