Ingredients

3 tablespoons Butter

3 tablespoons All-purpose flour (can substitute gluten free flour)

1 1/2 teaspoons Salt

1/8 teaspoon Pepper

2 cups 2% Milk

1 cup Shredded cheddar cheese

5 cups Thinly sliced potatoes (about 6 medium size)

1/2 cup Chopped onion

Preparation

Preheat oven to 350°. In a large saucepan, melt butter over low heat. Stir in flour, salt and pepper until smooth. Gradually add milk. Bring to a boil; cook and stir 2 minutes or until thickened. Remove from heat; stir in cheese until melted. Add potatoes and onion. Transfer to a greased 2-qt. baking dish. Cover and bake 1 hour. Uncover; bake 30-40 minutes or until the potatoes are tender.