Instructions

1. Butter a baking pan, 13- by 9- by 2-inches.
2. Heat corn syrup, margarine and real milk chocolate morsels just to boiling in 3-quart saucepan, stirring constantly; remove from heat.
3. Stir in vanilla.
4. Pour over cereal in large mixing bowl; toss quickly until completely coated with chocolate.
5. Fold in marshmallows, 1 cup at a time.
6. Press mixture evenly in pan with buttered back of spoon.
7. Let stand until firm, at least 1 hour.
8. Cut into about 1-1/2-inch squares.