Baked Catfish Dijon

2 lb. catfish fillets
Salt to taste
Pepper to taste
3/4 cup thinly sliced onion
2 tbsp. butter
1 cup mayonnaise
1/4 cup Dijon mustard
2 tbsp. lemon juice
1/2 tsp. hot sauce
1/4 cup chopped fresh parsley

Preheat oven to 350F. Arrange fish in a shallow baking dish, salt and pepper liberally; cover with sliced onion; dot with butter. Bake 20 minutes or until fish flakes easily. Mix mayonnaise, mustard, lemon juice and hot sauce. Pour over fish and broil 2 to 3 minutes, until brown and bubbly. Sprinkle parsley over top of finished dish. Serve hot with lemon wedges.