Butterscotch Squares
["1 pkg. Betty Crocker SuperMoist butter pecan cake mix", "1/2 c. margarine, softened", "1 egg", "2 c. miniature marshmallows", "1 (12 oz.) pkg. butterscotch chips", "1 tub Betty Crocker Creamy Deluxe chocolate frosting", "2 c. crisp rice cereal", "1/2 c. chopped nuts"]
["Heat oven to 350\u00b0.", "Beat dry cake mix, margarine and egg in large bowl on low speed until blended.", "Press on bottom of ungreased 13 x 9 x 2-inch pan.", "Bake 15 to 20 minutes or until golden brown; cool."]
["butter", "margarine", "egg", "marshmallows", "butterscotch chips", "Deluxe chocolate frosting", "crisp rice cereal", "nuts"]