Rice Krispie Treat S’mores Ingredients For the Rice Krispies Treats 3 tbsp Butter 4 C Mini marshmallows 6 C Rice Krispies cereal For the S’mores 1/4 C Graham cracker crumbs 6 oz Chocolate for melting (3 squares of Candiquik) For the marshmallow frosting: 2 egg whites 1/4 teaspoon salt 1/4 cup granulated sugar 3/4 cup