1 1/2 lbs. haddock fillets
3 tbsp. butter
2 c. milk
1/2 tsp. salt
1/4 c. flour
1/2 tsp. dry mustard
1/4 tsp. paprika
1/8 tsp. pepper
3/4 c. shredded sharp Cheddar cheese

Place fillets in a well greased shallow baking dish. Make a sauce by blending butter, flour, salt, and seasonings. Add milk slowly, cooking and stirring constantly. When sauce is smooth and thickened; add cheese. Remove from heat. When cheese has melted and blended, pour over fillets and bake at 350 degrees for 30 minutes.