Add bread cubes to well-greased 12-inch dutch oven. Drizzle butter over bread then sprinkle with grated cheese. Whisk together eggs, milk, and mustard. Add salt and pepper to your liking. Pour eggs over bread and cheese. Sprinkle the cooked sausage on top. Cover and bake using 6-8 briquettes on the bottom and 12-14 briquettes for the top for 30-45 minutes, or until eggs are set.