S'Mores Bars

Preheat oven to 350°F (175°C).

In a bowl combine graham cracker crumbs, sugar, salt and butter. Reserve 1 cup of crumb mixture and set aside. Press remaining mixture in the bottom of a 13 x 9 x 2-inch baking dish. Bake for 12 minutes, or until golden brown. Cool on a rack.

In a metal bowl set over a saucepan of barely simmering water melt chocolate, stirring constantly. Spread evenly over baked crust; sprinkle with marshmallows, pressing them lightly. Sprinkle the reserved crumb mixture evenly over all. Broil for 30 seconds, or until the marshmallows are puffed and golden. Allow to cool completely and cut it into squares.