White Scalloped Potatoes | Cooking Professionally

Ingredients

• 1/4 cup butter
• 1 medium onion, finely chopped
• 1/4 cup all-purpose flour
• 1 teaspoon salt
• 1 teaspoon dried parsley flakes
• 1/2 teaspoon dried thyme
• 1/2 teaspoon black pepper
• 3 cups 2% milk
• 1 (10.75-ounce) can condensed cream of mushroom soup, undiluted
• 1 cup sour cream
• 8 cups potatoes, peeled, thinly sliced
• 3 1/2 cups ham, fully-cooked, cubed
• 2 cups sharp white cheddar cheese, shredded
• fresh parsley, to taste, chopped, for garnish