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 9 x 13 inch pan. Heat corn syrup, butter, and chocolate chips to boiling, stirring constantly; remove from heat. Stir in vanilla. Pour over cereal and marshmallows. Stir until well mixed. Press mixture evenly in pan. Let stand at least 1 hour. Store loosely covered at room temperature.