1 package microwave popcorn
1/2 cup M&Ms or small gumdrops
1/3 cup unsalted peanuts
2 cups miniature marshmallows
3 tablespoons butter or margarine
Microwave popcorn according to package directions. Grease an 8-inch square pan. Remove unpopped kernels from popcorn.
In large greased bowl, combine popcorn with candy and peanuts. Place marshmallows and margarine in microwave-safe container. Microwave on HIGH for 1 1/2 to 2 minutes or until melted and smooth, stirring once halfway through cooking. Pour marshmallow mixture over popcorn mixture; toss until evenly coated. With buttered hands, press mixture into prepared pan. Refrigerate until firm. Cut into bars.