Indoor S'mores

8 Cups Golden Grahams cereal                                       5 Tbl butter, cut in pieces

6 Cups miniature marshmallows                                       1/4 Cup light corn syrup (optional)

1 1/2 Cups chocolate chips                                              1 Tsp vanilla

Grease 9x13 pan.  Pour cereal into large bowl.  Heat 5 cups marshmallows, chips, butter and corn syrup in medium saucepan over low heat, stir constantly until smooth.  Remove from heat and stir in vanilla.  Pour

 mixture over cereal; stir until coated.  Stir in remaining marshmallows.  Press into pan.

Refrigerate for 1 hour until firm.  Cut into bars.