Trout Patties

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Place a piece of aluminum foil large enough to wrap trout fillets into a 9×13-inch baking dish.

Step 2
Start the patties: Place trout fillets on the foil in the prepared pan; drizzle butter and lemon juice over trout. Fold the aluminum foil and seal the edges to enclose trout in a packet.

Step 3
Bake in the preheated oven until fish flakes easily with a fork, about 1 hour.

Step 4
Meanwhile, make the cocktail sauce: Mix ketchup and horseradish together in a small bowl until well combined. Refrigerate until needed.

Step 5
Finish the patties: Remove trout from the oven and let cool for 10 minutes. Flake fish into a large bowl. Add bread crumbs, onion, and celery; mix to combine.

Step 6
Whisk eggs, mayonnaise, and lemon-pepper seasoning together in a small bowl until blended. Add to trout mixture and mix until combined. Form mixture into 12 patties.

Step 7
Heat 1/4 inch oil in a deep skillet over medium heat. Working in batches, fry patties until deep golden brown, 4 to 5 minutes per side.

Step 8
Serve patties with reserved cocktail sauce.