These brownies were really simple. A layer of graham crackers, a layer of brownie batter, a layer of hershey bars, another layer of brownie batter then a layer of mini marshmallows when it comes out of the oven then put under the broiler to brown. They were really yummy! I used a boxed brownie mix but you could use your favorite brownie recipe. Just bake according to box or recipe directions. A quick and easy sweet treat.