Preheat your oven to 350°F (175°C).

Lightly grease a 9×13-inch casserole dish with cooking spray or butter.

In a Dutch oven, heat avocado oil over medium heat. Add chopped onion and green pepper with diced sweet potatoes, sautéing for 8-9 minutes.

Pour the sautéed mixture evenly into the greased casserole dish.

In the same skillet, add turkey sausage and cook over medium heat until browned, about 5-7 minutes.

In a separate bowl, whisk together eggs, milk, fresh thyme, salt, and pepper, then stir in shredded cheese.

Pour the egg mixture evenly over the sausage and vegetable layers in the casserole dish.

Bake for 40-45 minutes until the center is firm and appears set.

Allow to cool for 5-10 minutes before slicing and serving.