4 (6-ounce) mahi-mahi fillets, about 1-inch thick, skinless
2 tablespoons avocado or olive oil
1 teaspoon Kosher salt
½ teaspoon black pepper, freshly ground
½ teaspoon garlic powder
½ teaspoon smoked paprika
4 tablespoons unsalted butter, cut into 4 pieces
2 cloves garlic, minced very finely
¼ cup dry white wine, such as Sauvignon Blanc (or low-sodium chicken broth)
3 tablespoons fresh lemon juice
2 tablespoons fresh parsley, finely chopped
Instructions
Preheat your grill to medium-high heat (400-450°F). Clean the grates thoroughly and wipe with an oil-soaked paper towel.
Pat the mahi-mahi fillets completely dry. In a small bowl, mix salt, pepper, garlic powder, and smoked paprika. Rub the fillets with oil, then apply the seasoning mix evenly.
Place the fillets on the hot grates and cook undisturbed for 3-5 minutes per side. The fish should release easily when ready to flip. Cook until opaque and the internal temperature reaches 137°F.
Transfer the cooked fish to a plate and let it rest for 5 minutes.
While the fish rests, place a small saucepan over medium heat. Add the minced garlic and white wine (or broth) and simmer until reduced by half, about 2-3 minutes.
Reduce heat to low, add the lemon juice, then whisk in the cold butter one piece at a time until a creamy sauce forms. Do not let it boil.
Remove the sauce from the heat, stir in the fresh parsley, and pour over the rested mahi-mahi fillets to serve.
Notes
Ensure your grill grates are impeccably clean and well-oiled before adding the fish. This is the single most important step to prevent sticking.