Potato Leek Gratin is a decadent dish that combines tender slices of potato with fragrant leeks that are bathed in a rich, creamy sauce and topped with a savory duo of shredded gouda and grated Parmesan cheese.
Step 2: Add the heavy cream to a small pot along with sprigs of fresh thyme, garlic clove, nutmeg, salt and pepper. Bring the cream to a gentle simmer to warm through, for about
5-7 minutes.
Step 8: Bake the potato and leek gratin at 425 degrees Fahrenheit for 45-50 minutes until bubbly and cooked through. Place under the broiler for 3-5 minutes for a golden brown top.