Start by flouring and stretching out your pre-made ball of dough, or use a rolling pin to roll dough into a large pizza shape. If you're using a pizza oven, use the pizza peel paddle to put the dough into your pre-heated pizza oven. You want the oven to be around 400 degrees. If you are using a regular oven put your pizza crust onto a cookie sheet or pizza pan lined with parchment paper or sprayed with non-stick cooking spray, or a pizza stone.
Cook the dough until it's just turning golden brown -don't over cook at this stage because we're going to put the pizza back in the oven later to finish it off.
Remove the pizza crust from the oven and spread a layer of Nutella on the pizza. The hot pizza crust will make the Nutella very easy to spread. Top with a layer of mini marshmallows.
Put the pizza back in the oven for a few minutes to toast the marshmallows.
Sprinkle some crumbled graham crackers over the top of the hot pizza. Slice with a pizza cutter and enjoy!