3/4 c. corn syrup
3 tbsp. butter
1 pkg. (11 oz.) milk chocolate chips
1 tsp. vanilla
9 c. (12 oz.) box) Golden Grahams cereal
3 c. mini marshmallows
9 x 13 inch pan, greased

Heat corn syrup, chocolate chips, and butter to boiling in a 3 quart saucepan, stirring constantly. Remove from heat. Stir in vanilla. Pour over cereal, which has been placed in a large bowl; toss until cereal is coated with chocolate. Fold in the marshmallows, 1 cup at a time. Press mixture into the pan. Let stand at least 1 hour. Cut into bars.