Preheat oven to 400F
In skillet, cook the ground turkey until no pink remains. When the turkey is half way cooked, add the taco seasoning to the pan and incorporate into the turkey.
Once no pink remains, remove from heat and set aside.
In a medium bowl, whisk the eggs, salt and pepper together and set aside.
In a greased or parchment lined 8 X 8 pan assemble the casserole starting with the sweet potato on the bottom.
Add the ground turkey taco mixture on top of the sweet potato.
Add the spinach on top of the turkey.
Pour the whisked eggs over the spinach.
Top with cheese.
Bake for 25-30 minutes. To check for doneness, insert a toothpick into the casserole and it should come out clean.
Eat casserole within 4 days, or portion and freeze!