Cook noodles or rice according to package directions. Drain and set aside.
Sauté mushrooms in ghee/olive oil until golden. Remove and set aside.
Cook onion & garlic in same pan until soft and fragrant.
Add seafood: Add cod first, cook 2–3 minutes, then add shrimp and scallops. Cook just until opaque. Remove and set aside.
Whisk sauce: In a bowl, whisk coconut milk, broth, arrowroot, nutritional yeast, lemon juice, salt, pepper, basil, thyme, and nutmeg.
Simmer & melt: Pour sauce into skillet and whisk until thick and creamy. Stir in ¼ cup of the vegan mozzarella and let it melt fully into the sauce.
Return mushrooms, onions, garlic, seafood, and capers to the pan and gently fold.
Add noodles and toss until fully coated. Or, pour over cooked noodles, rice or even mashed potatoes.
Sprinkle remaining mozzarella over top, cover pan for 2–3 minutes to melt.