Add the seasoned fish filets to the skillet, cooking for about 3-4 minutes on one side, or until they are golden brown. Carefully flip the fish over.
Pour the coconut milk mixture over the fish in the skillet. Allow it to simmer for an additional 4-5 minutes or until the fish is cooked through and flakes easily with a fork.
In the final minute of cooking, add the remaining 2 tablespoons of butter and sprinkle red pepper flakes if using. Gently spoon the melted garlic butter over the fish.
Remove the skillet from the heat. Garnish the fish with chopped cilantro. Serve immediately with lime wedges on the side.
Notes
Serve with steamed rice or a fresh salad. Store leftovers in an airtight container in the refrigerator for 2-3 days.