01 -
Warm up your oven to 350°F. Make sure it's completely heated before you start baking so everything cooks evenly.
02 -
Grab a big bowl and mix the crushed graham crackers, cocoa powder, and confectioners' sugar together. Stir until everything's mixed well with no clumps left.
03 -
Add your melted butter to the dry stuff. Mix it all with a strong spoon or spatula until everything's damp. The mix will end up thick and a bit gooey.
04 -
Gently stir in your tiny marshmallows, chocolate morsels, and the nuts if you're using them. Just mix enough to spread everything around. Don't mix too much or you'll ruin the marshmallow bits.
05 -
Coat a 9x13 inch baking dish with cooking spray or put down some parchment paper. Dump the mixture in and flatten it out with your spatula until it's even.
06 -
Stick the pan on the middle shelf and bake for about 25 to 30 minutes. You'll know it's done when the edges look set and the middle feels slightly firm when you touch it.
07 -
Take the pan out and let everything cool down completely. After it's cooled, use a sharp knife to cut it into 40 equal squares.