2/3 c. light corn syrup
2 tbsp. butter
1 (11 1/2 oz) pkg. milk chocolate chips
1 tsp. vanilla
8 c. golden grahams cereal
3 c. miniature marshmallows

Butter 13x9x2 inch pan. Heat syrup, butter and chips to boiling in 3 quart saucepan, stirring constantly. Remove form heat; stir in vanilla. Pour over cereal in large mixing bowl; toss quickly until completely coated. Fold in marshmallows, 1 cup at a time. Press mixture evenly in pan with buttered spoon. Let stand until firm, at least 1 hour. Cut into 1 1/2 inch squares. Store, loosely covered, at room temperature.