2 lbs. perch
4 onions, sliced
1/2 c. mayonnaise
1 tsp. Worcestershire sauce
1 tbsp. lemon juice
1/2 c. grated Parmesan cheese
2 tbsp. chopped parsley

Cook sliced onions in salt water until tender. Spread drained onions in a shallow baking dish. Place fish on onions, combine remaining ingredients and spread over fish. Bake 30 to 40 minutes at 350 degrees. Serves 6. Try this recipe with sole and other fillets.