Source: Dear Daisy Cottage
1 box brownie mix
10 whole graham cracker squares, broken into pieces
2 cups miniature marshmallows
1 cup milk chocolate morsels
Heat oven to 350. Lightly grease a 9x13 inch baking pan. Mix brownie mix according to package directions. Pour into prepared pan. Bake for 18 minutes. Remove from oven. Sprinkle with graham cracker pieces, pressing down lightly. Sprinkle evenly with marshmallows and chocolate morsels. Return to oven, and continue baking for 12-15 minutes. Let cool, and cut into squares.