1 box. yellow cake mix
1 egg
1 stick butter, melted
8 oz. cream cheese, softened
3 egg yolks
1 box powdered sugar
1 tsp. vanilla

Mix cake mix, egg and butter together and press into 9 x 13 inch pan for crust, then mix cream cheese, egg yolks, powdered sugar and vanilla. Pour over crust. Bake at 350 degrees for 35 minutes.