Pumpkin Rice Krispie Treats Ingredients 12 cups of Rice Krispies Cereal 1 stick of butter 2 (10 oz) Pkgs of Marshmallows 1 teaspoon yellow food coloring 1/4 teaspoon red food coloring Tootsie rolls green taffy Instructions ~In a pot on low heat melt the butter then stir the marshmallows in until they have dissolved completely.