These were oh, so good. Next time I would add the step of sticking the tray under the broiler at the very end to toast the marshmallows a bit.
14 graham crackers
2 cubes butter
1 cup brown sugar
Break the graham crackers into squares and spread onto a cookie sheet.
Melt the butter and sugar together and boil 5 minutes, stirring constantly.
Pour evenly over the crackers.
Bake at 350 for 10 minutes.
Sprinkle with chocolate chips and then marshmallows.
Put under the broiler for a few minutes, for the marshmallows to toast.
Let cool about 10 minutes in the fridge, and then cut into bars (along the graham squares) before it gets hard.