1 premade graham crust
½ cup cocoa powder
1 cup sugar
⅓ cup + 1 tablespoon cornstarch
3 cups milk
1 teaspoon vanilla
3 tablespoons butter
1½ cups marshmallows
Instructions
In a medium sauce pan combine cocoa powder, sugar and constarch. Add in milk and vanilla. Bring to a boil over medium heat. Let boil 1 minute.
Remove from heat and add butter.
Pour into prepared crust and cool 3 hours or overnight.
Top with marshmallows. Place pie on the lowest rack in the oven and turn the broil on. Broil just until marshmallows brown.
Note
Source recipes -Here-