Preheat oven to 325 degrees.

Mix a box of crushed graham crackers with one egg until crumbly, and add to the oven until slightly browned.

In a medium bowl, combine the sugar, flour, cocoa powder, powdered sugar, and salt.

In a large bowl, whisk together the eggs, olive oil, water, and vanilla.

Sprinkle the dry mix over the wet mix and stir until just combined.

Pour the batter into the prepared pan (it'll be thick - that's ok) and use a spatula to smooth the top. Bake for 40 to 48 minutes, or until a toothpick comes out with only a few crumbs attached (note: it's better to pull the brownies out early than to leave them in too long)

Once taken out of the oven put large marshmallows over the top until covered and bake to preferred color