Melt the butter in a skillet over medium heat. Add roasted garlic, and ají amarillo paste, and cook for 2 minutes.
Add fish, shrimp, calamari, and scallops, and simmer for one minute. Add white wine, put the lid on and cook for two minutes more. Add heavy cream, and salt and pepper to taste.
Transfer to a baking dish, cover with mozzarella and Parmesan cheese.
Broil until the cheese is bubbling and golden brown.
Serve immediately.
Recipe by PERU DELIGHTS at https://perudelights.com/seafood-gratin/