Au Gratin Potatoes

Ingredients

• 6 potatoes (peeled and sliced)
• 1 small onion (diced)
• 2 Tbsp butter or margarine
• 2 Tbsp flour
• 1 tsp salt
• 1/4 tsp pepper
• 2 cups milk
• 2 cups grated cheddar cheese (sharp is best)

Instructions

1. 1

   Peel and slice potatoes, then place in a large bowl of cold water to prevent browning. Set aside. Cook and stir onion and butter in a large saucepan over medium heat till onions are tender.

2. 2

   Whisk in flour, salt, and pepper. Cook and stir till hot and bubbly.

3. 3

   Slowly whisk in milk. Stirring constantly, bring to a boil. Boil for at least one minute. Add cheese and stir till melted.

4. 4

   Drain the water off of the potatoes, then pour the sauce over the top. Stir till well coated, then pour into a large casserole dish that has been sprayed with non-cooking spray.

5. 5

   Cover with foil and bake at 375° for about 60 minutes. Remove foil and cook for an additional 15-20 minutes or till potatoes are tender and top is browned.