2 tbsp. butter
2 tbsp. flour
1/2 tsp. salt
1 c. milk
1/2 c. grated sharp cheese
2 tsp. lemon juice
1 lb. orange roughy

Melt butter in small saucepan, add flour and salt; gradually add milk, stir constantly until boiling. Remove from heat and add cheese and lemon juice. Pour over fish and bake 30 minutes at 350 degrees.