DIABETIC KEY LIME PIE

1 (13 oz.) can evaporated skim milk
2 tsp. vanilla
2 envs. plain gelatin
1/3 c. lime juice, strain if fresh
1 c. boiling water
20 pkgs. Equal
Zest of 3 limes, grated rind
Green food coloring

Combine milk and vanilla. Freeze for 30 minutes. Combine gelatin and juice in a blender. Let set for 1 minute. Add boiling water and Equal; blend until smooth. Chill about 45 minutes. Put frozen milk into a small chilled bowl and whip frozen milk until stiff. Fold in lime zest. Slowly add the gelatin mixture to whipped milk. Spoon into 2 cooked pie shells or you may use a 9 x 13 inch baking dish. Garnish with lime slices and zest. Makes 16 servings. See index for Diabetic Pie Crust.