Preheat oven to 350 degrees. Coat a 13x9x2-inch pan lightly with vegetable oil spray.
In a medium bowl, cream together cake mix, 1 egg and margarine. Pat into bottom of prepared pan.
In a separate bowl, combine cream cheese, powdered sugar, remaining 2 eggs and vanilla. Mix well. Pour over crust in pan.
Bake 30 to 35 minutes. Cool, then cut into squares for serving.
Recipe submitted by ~Donna~ V on 2/17/01