Creamy Cheesy Scalloped Potatoes Recipe | Land O’Lakes

Ingredients

• 1/4 cup plus 1 tablespoon Land O Lakes® Butter divided
• 1 large (2 cups) onion, thinly sliced
• 2 teaspoons finely chopped fresh garlic
• 1 tablespoon kosher salt
• 1/2 teaspoon pepper
• 1/4 teaspoon ground red pepper (cayenne), if desired
• 6 tablespoons all-purpose flour
• 1 teaspoon yellow or Dijon mustard
• 2 1/2 cups whole milk
• 12 ounces (3 cups) Land O Lakes® Sharp Cheddar Farmstyle Cut Shredded Cheese
• 2 1/2 pounds russet potatoes, scrubbed, dried, sliced 1/8 inch thick
• 1 ounce (1/2 cup) shredded Parmesan cheese