Cajun Baked Catfish Dijon

2 pounds catfish fillets

½ teaspoon salt

¼ teaspoon ground black pepper

¾ cup thinly sliced red onion

2 tablespoons butter

1 cup mayonnaise

¼ cup Dijon mustard

2 tablespoons lemon juice

1 teaspoon hot chile oil

¼ cup chopped fresh cilantro

Preheat an oven to 350 degrees F (175 degrees C).

Arrange the catfish in a shallow baking dish; season liberally with salt and pepper.

Spread onion slices over the fish.

Dot fish with butter.

Bake in the preheated oven until the fish flakes easily with a fork, about 20 minutes.

Remove baking dish from oven.

Preheat the oven s broiler.

Mix the mayonnaise, Dijon mustard, lemon juice, and hot chile oil together in a bowl.

Spread the mayonnaise mixture over the fish.

Return the fish to the oven and broil until the sauce is browned and bubbly, 2 to 3 minutes.

Garnish with chopped cilantro.