Preheat oven to 400˚F. Heat the oil in a medium-sized castiron skillet, about 8 to 10 inches. (If using a larger cast iron, you may wantto increase the number of eggs to 12.)
Add the diced onion and sauté for about 3–5 minutes, untiltender. Add the garlic to the onions and sauté for an additional minute.
Addthe sausage to the onion mixture and cook until browned. Add your salt andpepper to the meat.
Once the meat is cooked, add the chopped mushrooms and stir.Add the chopped kale to the pan and make sure all the ingredients are mixedwell.
Crack all the eggs into a medium-sized mixing bowl and whiskthem well. Pour the eggs into the skillet and then transfer to the preheatedoven.
Bake for approximately 15 minutes, until eggs are barelybrowned on the edges.