Preheat oven to 350.
Heat ghee over medium heat in an oven-safe skillet (preferably cast iron). When hot, Add the onions, garlic and sausage to the skillet. Cook, stirring until the onions are tender, 3 to 4 minutes.
Add apples and continue to cook, stirring, until apples are tender, about 3 more minutes.
Remove from heat and add the spinach to skillet. Stir in until just wilted. Spread the skillet contents into a single even layer. Set aside.
Meanwhile, in a large bowl combine the eggs, salt, pepper and creamer and whisk until very well combined and frothy. Pour egg mixture evenly into the skillet with the sauteed apples and onions.
Crumble the goat cheese over the top, then transfer to the middle rack of the oven. Cook until the eggs have just set, about 15 minutes.
Remove from the oven and allow to cool for about 10 minutes before slicing into 8 large slices.