Creamy Potatoes Au Gratin

Ingredients

• 4 russet potatoes, peeled, sliced 1/4-inch thick and divided
• 1 onion, thinly sliced
• salt and pepper to taste
• 3 tablespoons butter
• 3 tablespoons all-purpose flour
• 2 cups milk
• 2 cups shredded Cheddar cheese, divided

Preparation

1. Arrange half the potato slices in a greased 1 1/2-quart casserole dish. Top with onion and remaining potatoes; add salt and pepper to taste.
2. In a medium saucepan, melt butter over medium heat. Add flour and salt; stir constantly with a whisk one minute. Stir in milk; cook until thickened. Stir in 1 1/2 cups cheese; continue to stir until melted.
3. Pour over potatoes; cover with aluminum foil. Bake at 400° for one hour. Uncover, sprinkle with remaining cheese. Bake 10 to 15 more minutes or until lightly browned.