CRUST:

1 1/4 c. fine corn flake crumbs
1/3 c. sugar
1/4 c. melted butter

Combine above ingredients. Press into a buttered 9-inch pie pan. Bake in a preheated oven at 375 degrees for 5 minutes. Chill.

FILLING:

1 tbsp. unflavored gelatin
2 tsp. liquid artificial sweetener (or 1/3 cup sugar)
1/4 tsp. salt
3/4 c. boiling water
1 (6 oz.) can frozen limeade, thawed
2 egg whites
Green vegetable food coloring

Combine gelatin, sweetener and salt. Pour boiling water into mixture and stir until dissolved. Add limeade. Chill until mixture just begins to congeal. Add egg whites. Beat in a well-chilled bowl until mixture is light and fluffy and begins to hold its shape. Blend in coloring. Pour into crust. Refrigerate for at least 4 hours. If desired, top each serving with a dollop of low-calorie topping and curls of semi-sweet chocolate. Serves 8.