MOM'S SCALLOPED POTATOES

Steps:

• Thinly slice potatoes, cover with cold water and set aside.
• In medium saucepan, melt butter. Stir in flour until no lumps remain, add milk and whisk until combined.
• Cook milk and flour mixture until thick enough to coat the back of a spoon.
• Grease a 2 qt casserole dish.
• layer 1/3 sliced potatoes.
• 1/2 of onion.
• 1/3 white sauce.
• Repeat layers, finishing up with potatoes and sauce.
• Dot with butter.
• Cover and bake 30 minutes at 350 degrees.
• Uncover and back an additional 1 hour.