1 stick butter
1 egg
1 box yellow cake mix
2 eggs
8 oz. cream cheese
1 box (1 lb.) powdered sugar
1 tsp. vanilla
1/4 tsp. salt

Mix first three ingredients and press into 9x13 pan (ungreased).

Beat eggs with cream cheese. Add powdered sugar and mix well. Add vanilla and salt. Pour over cake mixture. Bake 350 degrees 30-35 minutes. Sprinkle top with powdered sugar.