Preheat your oven to 375°F and lightly grease a small oven-safe baking dish with the avocado oil.
In a non-stick skillet over medium-high heat, cook the ground turkey sausage until browned and fully cooked, breaking it into small crumbles as it sears.
Add the diced red bell pepper and yellow onion to the skillet with the sausage, sautéing for about 4 minutes until the vegetables are tender and fragrant.
In a medium mixing bowl, whisk together the whole egg, liquid egg whites, sea salt, black pepper, and garlic powder until well combined and slightly frothy.
Place the shredded potatoes in an even layer at the bottom of the prepared baking dish.
Top the potatoes with the cooked sausage and vegetable mixture, spreading it out to cover the surface.
Pour the egg mixture slowly over the sausage and potatoes, ensuring it settles into all the crevices.
Bake for 25 to 30 minutes, or until the eggs are completely set in the center and the top is beginning to turn a light golden brown.
Remove from the oven and let it rest for 5 minutes before slicing and serving warm.