Brownie Pie

Weight Watchers--2 Points per serving

3 Egg whites

2 Tbs. Firmly packed light brown sugar

18- 2 1/2" chocolate graham cracker squares, made into crumbs

1/4 C. Walnuts, finely chopped

1/2 Tsp. Vanilla

1 Pint Frozen vanilla yogurt, softened

Preheat oven to 325º spray a 9" pie plate with cooking spray. Beat egg whites until soft peaks form (3-4 minutes). Add sugar and beat until stiff peaks form (2-3 minutes). Fold remaining ingredients EXCEPT yogurt into egg whites. Scrape into pie plate. Bake until firm about 25 minutes. Cool completely. Spread yogurt over pie, freeze, covered 2-3 hours until yogurt is firm

Makes 8 servings