Preheat your oven to 350. Lightly grease your pie pan.
Mix together your crushed/ground graham crackers, melted butter, 1/4 cup sugar, and a pinch of salt. Fun add on: add cinnamon to your crust
Press your crust mixture into your pie dish, slightly up on the sides so you have crust on both the bottom and back of the pie slices. Bake for 10 minutes and take out to cool.
In a medium or large saucepan, mix together your sugar (1 cup), cocoa powder, cornstarch and 1/2 tsp salt.
Over medium heat, slowly stir in the milk into the dry mixture.
Bring mixture to a boil, stirring occasionally to make sure the mixture isn’t sticking to the bottom. Boil 1 minute.
Slowly incorporate the eggs, stirring occasionally. Boil 1 more minute.
Take off heat and stir in remaining butter and vanilla extract.
Pour into your pie crust and let cool before putting in the fridge. Refrigerate 4 hours to overnight. Serve by itself or with some homemade whipped cream!