Scalloped Potatoes

• Preheat oven to 375°F
• Grease a 9x13-in baking dish
• Slice the potatoes about 1/8 in thick

Ingredients

• 4 Tbs butter
• 1/4 cup all-purpose flour
• 2 1/2 cups whole milk
• 1 1/4 tsp salt
• 1/4 tsp black pepper
• 1 cup sharp cheddar, shredded (optional)
• 2 1/2 lb russet or Yukon Gold potatoes, thinly sliced
• 1 small onion, thinly sliced

Steps

1. melt over medium: butter
2. whisk in, cook 1 min: step 1, all-purpose flour
3. whisk in, simmer until thickened 5 min: step 2, whole milk, salt, black pepper
4. stir in off heat until melted: step 3, sharp cheddar
5. layer in dish with the sauce, ending with sauce: step 4, russet or Yukon Gold potatoes, onion
6. bake 375°F 60 to 75 min until tender and golden: step 5
7. rest 10 min: step 6