Preheat oven to 350. Crush graham crackers in food processor or plastic baggie. Add melted butter and mix with fork.
Press mixture into 6 holes on mini muffin tin. Bake for 10 minutes. Place 4 chocolate chips on each graham cracker cup.
Cut marshmallows in half using kitchen shears. Place marshmallow half on top of chips (cut side down).
Return to oven for 3 minutes (until marshmallow is slightly soft). Place on cooling rack for 15 minutes.