S'mores Squares

1/3 cup butter
1 (10 oz) bag marshmallows
1 box golden grahams
1 cup chocolate chips

Grease a cake pan and rubber spatula, set aside.  Melt butter in large nonstick pan over medium heat.  Add marshmallows and melt, stirring frequently.  Once no lumps remain add golden grahams. Stir till evenly distributed.  Mix in chocolate chips. Pour into prepared pan.  Use prepared spatula to press into place.  Let cool till firm and slice into squares.