Potatoes Au Gratin - cooking recipe

Ingredients

1 Tbsp. butter
1 Tbsp. flour
1 c. milk
1 tsp. diced onion
3/4 tsp. salt
1/2 c. diced cheese
1 qt. sliced potatoes

Preparation

Preheat oven to 375\u00b0.
Melt butter; stir in flour and mix well.
Add milk, diced onion, salt and cheese.
Heat until slightly thickened.
Pour over potatoes.
Bake 1 hour.
Serves 6 to 8 people.