Crab-Stuffed Flounder

? 2-2.5 lbs. fresh pollock or flounder fillets
? 1/4 cup chopped onion
? 1/4 cup margarine or butter, melted
? 7-oz. can crabmeat, drained
? 1/2 cup saltine crackers, crushed
? 2 tbsp. dried parsley
? 1/2 tsp. salt
? Dash of pepper
? Cheddar Cheese Topping (recipe follows)

Butter either 6 individual casserole dishes or one large 2 quart dish. Combine the onions, butter, seasonings, crabmeat and crackers. Roll the crabmeat mixture up in the filets. Bake uncovered 25 minutes at 400 degrees F.

In a saucepan, while fish is cooking, melt 3 tbsp. butter. Stir in 3 tbsp. flour and 1/4 tsp. salt. Simmer until bubbly and smooth, just a brief time. Add 1-1/2 cup milk, stirring constantly until it thickens. Stir in 1 cup grated Cheddar Cheese and stir until cheese is all melted. Remove casserole dish from oven after 25 min., pour cheese sauce over fish and return to oven. Cook about 5 minutes longer. Remove and serve.