6 Tbsp. butter or margarine, divided
2 pkg. (10-1/2 oz. each) JET-PUFFED Miniature Marshmallows, divided
12 cups KELLOGG’S® RICE KRISPIES® cereal, divided
1 container (15.6 oz.) ready-to-spread frosting
2 Tbsp. multi-colored sprinkles
®, TM, © 2013 Kellogg NA Co.