Grease a 9x13 inch pan
Pour 8 cups (1 13 oz box) Golden Graham cereal in a bowl.
Over low heat stir:
4 cups mini marshmallows
1 1/2 cup milk chocolate chips
5 TB butter
1/4 cup Karo syrup
Stir the above ingredients on low heat until melted. Remove from heat and add 1 tsp. vanilla.
Pour hot mixture over Golden Grahams and add 1 additional cup mini marshmallows. Press into pan and let cool. Cut into squares.