Get a hot fire going until you have a substantial bed of coals, or fire up 24 charcoal briquettes or a combination of both.
In a bowl, whisk together dry ingredients (except mix-ins).
Make a well in the middle of the dry ingredients and crack two eggs into it. Then I get my Danish dough whisk, you could use a fork or a wooden spoon, and start mixing the eggs as I pour in the melted butter. Mix the batter together until well combined. Add in your mix-ins at this point, mixing together.
Spread evenly into a lightly greased 6 quart Dutch oven. Alternatively, add parchment paper to your Dutch oven and carefully spread in your brownie mix evenly on greased paper.
Carefully place the Dutch oven on hot coals…about half underneath, and the remainder on lid once covered.
Depending on how hot your coals are, it can take anywhere from 20-45 minutes to fully bake.
Use your cast iron lid lifter and gloves and check within the first 20 minutes, until a knife inserted near the center comes out clean.
Carefully lifting out of your very hot Dutch oven, plate your brownie round.
When you are ready to serve, whip your cream if you will be topping with whip or slice with a good knife, garnish with chocolate shavings, freshly picked berries, mint, or fresh edible flowers and enjoy!