Preheat your oven to 350 F.
Place the spaghetti squash, cut side down, on a baking sheet and bake for 30 minutes in the preheated oven.
1 spaghetti squash
Combine all the ingredients for the sauce in a saucepan placed over medium-low heat. Heat until thickened, whisking the whole time, and set aside.
1 onion, 1 cup coconut milk, 2 tbsp. ghee or butter, 2 garlic cloves, 1 tsp. dried oregano, Sea salt and freshly ground black pepper
Place a skillet over medium heat, melt some cooking fat in it and sauté the onion and garlic until fragrant (about 2 minutes).
3 cloves of garlic, 1 tsp. onion powder
Add the pancetta as well as the mushrooms and cook until the mushrooms are soft.
4 oz. pancetta, 1¼ cup Shiitake mushrooms
Add the creamy sauce to the skillet, give everything a good stir, and adjust the seasoning.
Sea salt and freshly ground black pepper
Use a fork or spoon to scoop the stringy flesh from the squash.
Serve the squash with creamy mushroom sauce on top.