S’more Brownie Recipe

Crust:
1½ cups of graham cracker crumbs
¼ cup sugar
6 tablespoons of butter, melted
Brownie Mix:
6 ounces bittersweet chocolate chips (60% cocoa)
4 tablespoons unsalted butter, cut into pieces
2 tablespoons Dutch cocoa powder
1 cup granulated white sugar
1 teaspoon pure vanilla extract
3 large eggs
¾ cup all-purpose flour
¼ teaspoon salt
¾ cup semi-sweet chocolate chips
Handfull of Jumbo marshmallows cut into quarters