Never Fail Scalloped Potatoes

• 6 lg potatoes, peeled and sliced
• 1 med onion, chopped
• 1 1/2 stick butter
• 3 Tbsp flour
• 3 cups milk
• 1 1/2 tsp salt
• 3/4 tsp pepper

Instructions

1. Mix sliced potatoes and onions together in casserole dish.
2. Melt butter, add flour.
3. Add milk, bring to a boil, stirring until thickened.
4. Add salt and pepper.
5. Pour over potatoes and bake 350°F for 1 hour covered.
6. Then bake 30 minutes uncovered.
7. Make sure there is enough sauce to cover the potatoes. (Depending on potatoes, it may take longer to bake until cooked through.)