INGREDIENTS
3 cups
confectioners' sugar
2/3 cup
unsweetened cocoa powder (Hershey's Special Dark)
1/4 tsp
salt
2
to 4 large egg whites, at room temperature
1 tbsp
vanilla extract
1 1/2 cups
bittersweet chocolate chips
1/4 cup
graham crackers, broken into pieces plus extra for topping cookies
1/4 cup
mini marshmallows, cut in half plus extra for topping cookies