Preheat oven to 375 degrees.

Crush graham crackers. In a small bowl, use a fork to mix the melted butter into the graham crackers.

Press graham cracker mixture into small castiron skillets, tart pans, ramekins or other pan about 3.5 inches in diameter.

Bake for 8 minutes until crust is set.

Place chocolate bars on top of the crust, breaking as needed to fit. Bake for 1 to 2 minutes until chocolate is glossy and gooey.

Remove from oven and top with mini marshmallows.

Toast marshmallows with a culinary torch or broil for 1-2 minutes.

Enjoy immediately while it’s warm and gooey.