Melt butter in a large microwave proof bowl. Add marshmallows and toss to coat. Microwave another minute and half. Stir mixture until marshmallows are melted. Add cereal. Stir until combined. Add M&M’s once the mixture has cooled slightly. Spread into a greased 9X12 pan. Let cool. Cute and serve.
Recipe by Cooking for Keeps at https://www.cookingforkeeps.com/last-minute-easter-rice-krispie-treats/