Pre-heat oven to 425 degrees and line baking sheet with foil. Spray with cooking spray and place fish fillets on top.
20 ounces firm white fish
In a small bowl, use a fork to mix together all remaining ingredients except the lemon juice (panko through cayenne.) Gently press mixture on top of the fish filets then bake until fish flakes easily with a fork, about 20 minutes. Drizzle fish with lemon juice before serving.
2/3 cup panko, 1/3 cup grated parmesan, 2 tablespoons butter, 1 clove garlic, 1 lemon zested and juiced, 1 teaspoon salt, 1/2 teaspoon pepper, 1/2 teaspoon cayenne