2/3 c. light Karo
2 tbsp. butter
11 1/2 oz. chocolate chips
1 tsp. vanilla
8 c. Golden Graham Cereal
3 c. miniature marshmallows

Butter rectangular pan. Heat Karo, butter and chocolate chips stirring constantly. Remove from heat. Stir in vanilla. Pour over cereal in large mixing bowl toss quickly until completely coated with chocolate. Fold in marshmallows, 1 cup at a time. Press mixture evenly in buttered pan. Cool.