Creamy scalloped potatoes baked with tender layers and a golden, cheesy topping.
2 pounds Yukon Gold or Russet potatoes, peeled and thinly sliced
3 tablespoons unsalted butter
3 tablespoons all-purpose flour
2 ½ cups whole milk
1 teaspoon salt
½ teaspoon black pepper
¼ teaspoon garlic powder (optional)
¼ teaspoon nutmeg (optional)
1 cup shredded sharp cheddar cheese (optional)
2 tablespoons fresh parsley, chopped (for garnish)