Recipe for 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.