In a heavy bottom pan, add 3 tbs. butter or margarine over low heat to melt. Once melted add a 10 oz bag of marshmallows mini ones melt most evenly. Add 6 cups of puffed rice cereal and mix well. Last addition is 1/2 cup of chocolate chips. If you add these while the mixture is still warm they will start to melt resembling 'dirty' rice. I pack mine in parchment paper because they rarely last more than a day. Paulie is taking most of these to work with him in the morning. A nice treat for the girls in his office.