Prepare brownie batter according to package directions or recipe
Place Graham cracker crusts on a rage cookie sheet and fill with brownie batter. Do not fill to the very top!
Bake at 350f for 20-25 min
Remove pies from oven and top them with marshmallows and choc chips
Bake for additional 3-5 minutes or until marshmallows begin to puff
let cool for 10-15 minutes before serving