1 Stick margarine 40 Large marshmallows (10 oz. bag) 5 Cups corn flakes cereal 1/2 Teaspoon vanilla (optional) 2 Teaspoons green food coloring M&Ms. Plain Chocolate Candy Melt margarine in large saucepan. Add marshmallows and cook over low heat, stirring constantly until melted and mixture is syrupy. Remove from heat. Add vanilla and food color. Mix. Add corn flakes and mix until well coated and bright green.