Blond Brownies

This brownie is very decadent....so cut into small squares!
Crust:
1 box (3 cups) Pillsbury Plus Yellow cake mix
1/2 cup melted butter
1 egg

Filling:
3 1/3 cups powdered sugar, sifted well
2 eggs
2 teaspoons vanilla
9 ounces cream cheese (three 3 oz packages) softened
1 1/2 cups Powdered Sugar, sifted well

To prepare crust
Generously spray a 10x15 inch jelly roll pan with non-stick spray.  Using an electric mixer blend dry cake mix, melted butter and 1 egg on low speed until moist.  Pat onto bottom and sides of prepared pan.  Set aside

To prepare filling
Using an electric mixer on low speed, mix 3 1/3 cups sifted powdered sugar, 2 eggs, vanilla and cream cheese until ingredients are moistened.  Turn mixer to high speed and beat for 5 minutes.  Turn mixer to low speed and add remaining 1 1/2 cups sifted powdered sugar and mix until well blended, then turn mixer to high speed; beat for 5 minutes.  Pour mixture over prepared crust in pan and spread evenly.

Bake at 350 degrees for 40 minutes, or until golden brown.  When completely cooled, slice into squares.