INGREDIENTS
1/2 cup
unsalted butter, room temperature
1/4 cup
brown sugar
1/2 cup
granulated sugar
1
large egg, room temperature
1 tsp
vanilla extract
1 1/3 cups
all-purpose flour
3/4 cup
graham cracker crumbs (about 8 graham crackers)
1 tsp
baking powder
1/4 tsp
salt
2
king-sized milk chocolate bars
1 1/2 cups
marshmallow Fluff (not melted marshmallows because they harden when they cool)