3/4 lb. haddock
2 tbsp. butter
2 tbsp. flour
1/2 tsp. salt
1/8 tsp. pepper
1/4 tsp. dry mustard
1/8 lb. sliced process Cheddar cheese
1 c. milk

Place fish in greased 6x10x2 inch baking dish. Melt butter in saucepan; stir in flour, salt, pepper, mustard; add milk gradually; cook, stirring until thickened. Add cheese; stir until melted. Pour over fish. Bake uncovered 25 to 30 minutes at 350 degrees or until fish flakes easily with fork but is still moist. 3 to 4 servings.