Preheat your oven to 350 degrees f.
Use 1 Tablespoon of your oil or ghee to grease an (6-8 cup capacity) baking dish of any shape.
Heat 1 Tablespoon of oil in a large skillet over medium heat. Add in your diced onion and sauté for 3 minutes. Stir in mushrooms, garlic and continue to cook until tender, about 5 minutes more.
Meanwhile, in a medium bowl beat the eggs together with sea salt and pepper.
Stir in the sauteed mushrooms, artichokes, and shredded cheddar. Transfer the egg mixture to your prepared oven-proof dish (You can make this ahead, and store covered in the fridge for up to 24 hours).
Bake at 350 degrees f. for 25-30 minutes, or just until the center is set.
Slice and serve!
Enjoy!