Preheat the oven to 350 F. Break the graham crackers into sticks. Place half of the graham crackers onto a large baking sheet in a single layer.
Evenly spread the graham crackers with peanut butter. Place 2-3 mini marshmallows on each graham cracker on the baking sheet. Bake for 3-4 minutes.
Remove from the oven and sandwich with the remaining half of graham crackers. Place the chocolate chips into a microwave-safe bowl, and heat in the microwave in 30-second intervals, stirring until it is fully melted and smooth.
Dip the tops of each s'mores stick into the melted chocolate, and set onto plates. Let sit until the chocolate has completely set.