Follow these easy steps for perfectly flaky and flavorful fish.
Preheat your outdoor grill or indoor grill pan to medium-high heat (around 400°F / 200°C) and lightly grease the grates with a neutral oil to prevent sticking.
In a small mixing bowl, whisk together the melted butter, fresh lemon juice, grated lemon zest, minced garlic, salt, and black pepper until completely incorporated.
Place the salmon fillets on a plate or in a shallow dish and brush the garlic-lemon butter mixture generously over the top and sides of each fillet.
Place the salmon fillets onto the hot grill and cook for 6 to 7 minutes per side, carefully flipping once, until the fish easily flakes with a fork and reaches an internal temperature of 145°F (63°C).
Remove the fish from the grill, immediately top each fillet evenly with the crumbled feta cheese while the fish is still hot, and serve immediately.