2 c. diced potatoes
2 tbsp. butter
2 tbsp. flour
1 c. milk
1 tsp. lemon juice
1 c. grated cheese
1/2 tsp. salt

Cook butter and flour together until bubbling, then add milk very slowly, stirring constantly. Cook until thick and smooth. Add the cheese and stir until it is melted, then add salt and lemon juice, may be added if desired. In this sauce place the potatoes and heat thoroughly. Put into a greased baking dish, cover the top with more grated cheese and brown in a hot oven.