Add about 1-2 tbsp graham cracker crumbs to fill bottom of cupcake pan.
Pour brownie batter to fill cupcake pans leaving about 1/4 inch at the top.
Bake according to package directions, about 30-35 minutes or until a toothpick comes out clean from the middle.
Remove brownie cups from oven and change oven setting to high broil.
Add mini marshmallows to the top of each brownie cup.
Once oven setting is on broil, place brownie cups back in the oven until marshmallows become crispy golden. Keep an eye out as this happens very quickly. About 1-2 minutes.
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