Ingredients 3 Tbsp margarine 4 cups miniature marshmallows (or 10 oz large marshmallows, about 40 cups rice crispy cereal orange and brown Halloween M&Ms (about 6oz) Directions Melt margarine in a large saucepan over low heat. Add marshmallows and stir until completely melted. Remove from heat. Add cereal and stir until well coated. Add the candy and mix until candy is evenly mixed. Spray a pan with non-stick cooking spray or line with waxed paper. Using a buttered spatula or waxed paper, press the mixture evenly into a 9x13" pan. Cut into squares when cool.