Potatoes O'Brien - cooking recipe

Ingredients

2 Tbsp. butter
2 Tbsp. flour
1 1/2 c. milk
1 c. grated cheese
salt and pepper to taste
1/2 small onion
4 medium size boiled potatoes

Preparation

Melt butter; stir in flour. Add milk. Cook 2 minutes. Add cheese; stir until melted. Season to taste. Add onion. Place a layer of diced potatoes in a buttered baking dish, then layer of sauce. Repeat alternately with sauce on top. Bake 20 minutes in oven at 350\u00b0.