Crush cereal in a plastic bag using a pie roller. Combine shredded cereal and sugar. Add butter and water until uniform.
With back of spoon pack crumbs firmly and evenly along bottom and sides of a 9” pie pan. Refrigerate 1 hour.
Mint Cream Filling
Scald 1.5 cups milk. Stir in mint leaves. Steep 1 minute. Strain. Pour back in pan. Add enough milk to make 3 cups and heat until bubbles form at the edges.
Mix sugar, cornstarch, and salt together in a small bowl.
Add sugar, cornstarch, and salt mixture to the hot milk, a little at a time, stirring until thick enough to coat the back of the spoon.
Remove saucepan from heat, and stir tin vanilla and butter. Pour into shell and chill at least 30 minutes. Top with whipped cream and sprigs of mint.
Notes
I don't add the food coloring - but it does make for a pretty showing!