In a small skillet over medium heat, add the olive oil and ground turkey.
Season the turkey with garlic powder, sea salt, and black pepper, cooking until browned and crumbly.
Add the sliced mushrooms to the skillet and sauté for 3-4 minutes until tender, then set the mixture aside.
In a medium saucepan, bring the water to a boil and stir in the rolled oats.
Reduce heat to low and simmer for 5 minutes, stirring occasionally until most of the liquid is absorbed.
Slowly pour the liquid egg whites into the oats while whisking constantly with a fork or whisk to create a voluminous, creamy texture.
Stir in the baby spinach and nutritional yeast, continuing to cook for 1-2 minutes until the spinach is wilted and the oats are fluffy.
Transfer the savory oats to a bowl and top with the cooked turkey, mushrooms, and fresh avocado slices.