garlic parmesan scalloped potatoes

Deliciously cheesy scalloped potatoes are full of garlic flavour and parmesan cheese! Soft and tender potatoes smothered and enveloped in a thick and creamy garlic sauce, layered with mozzarella cheese for a cheesy string then crisped with your oven broiler or grill to get a crispy, cheesy top layer.
Deliciously cheesy scalloped potatoes are full of garlic flavour and parmesan cheese! Soft and tender potatoes smothered and enveloped in a thick and creamy garlic sauce, layered with mozzarella cheese for a cheesy string then crisped with your oven broiler or grill to get a crispy, cheesy top layer.

Ingredients
  • 4 tablespoons butter
  • 1 tablespoon minced garlic (or 4 large garlic cloves, minced)
  • 4 tablespoons all-purpose (or plain) flour
  • 4 cups milk (skim, 2% or full fat -- more if needed)
  • 1 teaspoon chicken bullion powder (or Kosher salt)
  • Salt to taste
  • 1/2 teaspoon black pepper
  • 2 1/2 pounds (1 kg) Yukon Gold potatoes (or Russets) peeled and sliced into 1/8-inch - 1/4-inch rounds
  • 2 cups shredded mozzarella cheese
  • 3/4 cup Parmesan cheese (freshly grated)
  • 1 tablespoon fresh chives divided

Instructions
  1. Preheat oven to 400°F | 200°C. Lightly grease a 9 x 13-inch baking pan with cooking oil spray; set aside.
  2. Melt butter in a medium-sized pan / pot. Add the garlic and sauté until just fragrant (about 1 minute). Whisk in the flour; continue to cook while whisking (or stirring) for at least 2 minutes. 
  3. Reduce heat down to low; gradually whisk in 4 cups of the milk (about ¼ cup at a time), whisking between each addition to combine. Bring to a boil until beginning to thicken. Stir in the bullion powder, salt (if needed), and pepper. Set aside.
  4. Arrange a layer of potatoes over base of prepared dish. Pour half of the cream sauce over the potatoes, then top evenly with half of the mozzarella cheese, and half of the Parmesan cheese. Arrange the remaining potato slices over the cheese, the remaining creamy sauce, and the remaining cheeses.