Line an 8×8 baking dish with parchment paper (cut the parchment paper so that is long enough to hang over the edges, this will make cutting the bars easy!)
In a large saucepan melt butter over low heat and add cinnamon. Add in marshmallows and mix until completely melted.
Remove from heat and fold in Golden Graham cereal and chocolate chips.
Transfer to baking dish, gently pressing into place.
Allow to cool for 1 hour. Once cool, lift out of baking dish and cut into 2 inch squares.
Store leftovers (like there will be any) in an airtight container at room temperature.