3 tbsp. butter
1 (10 1/2 oz.) pkg. mini marshmallows
1/2 c. peanut butter
5 c. Cheerios
1 c. plain M&M'S®

Place the butter and marshmallows in a large microwave-safe bowl. Micro uncovered on High for 2 minutes or until puffed. Stir in peanut butter until blended. Add cereal and M&M'S®; mix well. Spoon into ungreased 13 x 9 x 2-inch pan. Press down gently. Cool slightly before cutting.

Yields 15 servings.