Magic Rainbow Cookie Bars
["1/2 c. margarine or butter", "1 1/2 c. graham cracker crumbs", "1 (14 oz.) can condensed milk", "1 c. chopped nuts", "1 c. M&M's"]
["Preheat oven to 350\u00b0", "(325\u00b0 for glass dish).", "In a 13 x 9-inch pan melt", "butter in oven.", "Sprinkle crumbs over butter. Pour condensed", "milk", "over", "crumbs evenly.", "Top with nuts and M&M's. Press", "down", "firmly.", "Bake", "25", "to 30 minutes or until light brown.", "Cool.", "Chill and store at room temperature."]
["margarine", "graham cracker crumbs", "condensed milk", "nuts"]