3 egg whites
1/2 tsp. Cream of tartar
1 c. granulated sugar
1 cup unsalted soda crackers, crushed
1/2 c. chopped walnuts
1/2 tsp. vanilla
1 container (16 oz.) Cool Whip
1 can blueberry or cherry pie filling

Beat egg whites and cream of tarter, slowly add sugar. Add crackers, walnuts and vanilla and beat until well mixed. Spread batter in a greased glass 13 x 9 inch baking dish.

Bake at 350°F for 20 - 35 minutes. Cool this crust. Top with Cool Whip, then top with pie filling. Refrigerate.