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["Line 1-1/2-qt.", "bowl or 8-inch loaf pan, and 8-inch square pan with foil extending about 2 inches beyond sides.", "Lightly grease foil; set aside.", "Microwave butter in 4-qt.", "microwaveable bowl sprayed with cooking spray on HIGH 45 sec.", "or until butter is melted.", "Add marshmallows; toss to coat.", "Microwave 1-1/2 min.", "; stir.", "Microwave an additional 4 min., stirring after 2 min.", "Add cereal; mix well.", "Press 6 cups (about three-fourths) of the cereal mixture firmly into prepared bowl, using moistened or greased hands to press cereal mixture against sides and bottom of bowl to create 1-inch-thick shell.", "Press remaining cereal mixture firmly into bottom of prepared square pan.", "Let stand in cool dry place for at least 4 hours or overnight until firm.", "Lift cereal shapes from molds, using foil handles.", "Carefully peel off foil.", "With sharp knife, carefully cut ""door"" and ""windows"" from bowl-shaped house.", "(Kids, ask an adult to help you.)", "Spread 1 container of the frosting onto large plastic board to resemble snow.", "Place house on snow.", "Using additional frosting, attach cereal mixture square to top of house.", "Decorate as desired."]