Ingredients

1 ³/₄ cups graham cracker crumbs
4 Tbsp reduced-fat margarine
3 eggs, separated
1 12-oz can evaporated fat-free (skim) milk
1 Tbsp cornstarch
¹/₃ cup sugar
¹/₃ cup fresh key lime juice
3 drops green food coloring
¹/₄ cup sugar

Directions

1. Preheat the oven to 350 ° F. Combine the graham cracker crumbs and margarine in a medium bowl and cut to mix. Press into a 9-inch pie pan and bake for 7 - 10 minutes or until browned.
2. Combine egg yolks, milk, cornstarch, and ¹/₃ cup sugar in a saucepan. Cook over medium heat, bringing the mixture to a boil. Remove from the heat and add the lime juice and the food coloring. Pour the mixture into the crust.
3. Beat the egg whites with a mixer until peaks form. Add ¹/₄ cup sugar and beat until stiff.
4. Spoon the meringue over the filling and bake until the edges are lightly brown, about 2 - 3 minutes.
   
5. Cool before serving.