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3.68 from 46 votes

Potatoes Au Gratin

Get ready to bake up the ultimate comfort side dish: Potatoes au Gratin. Thinly sliced potatoes are layered with rich cream, melted butter, and gooey cheese, then baked until golden and bubbling. With crisp edges and a silky center, this French-style favorite is the perfect dish to lighten up on weekends or elevate any holiday spread.
Prep Time10 minutes
Cook Time1 hour 20 minutes
Total Time1 hour 30 minutes
Course: dinner, Side Dish
Cuisine: American
Keyword: potato au gratin
Servings: 8 people
Author: Olivia Ribas

Ingredients

  • 1 1/2 cups heavy cream you can use half-half cream too.
  • 3 garlic cloves minced
  • 2 tbsp unsalted butter melted
  • Salt and pepper to taste
  • 2 lb starchy potatoes peeled and sliced about 1/8” thick
  • 2 cups mozzarella shredded
  • 1 tsp thyme leaves chopped

Instructions

  • Preheat the oven at 350F. Grease with butter or olive oil a rectangular baking dish (9 x 13).
  • In a medium glass bowl add heavy cream, garlic, butter, salt and black pepper. Mix all well until combined. Set aside.
    heavy cream and melted butter in a cup
  • Place sliced potatoes in three tight slanted rows as you can see in the photos and make sure the potato slices are slightly slanted. Pour the cream butter sauce evenly over the potatoes. Sprinkle more salt and pepper on top.
    overhead view of white casserole containing sliced potato and heavy cream
  • Cover them with foil, place it in the oven and bake for about 50 minutes.
    casserole wrapped with foil
  • After 45 minutes, remove the foil, top with mozzarella cheese and return to the oven again. Bake for 20 minutes more minutes or until potatoes are done, nice and golden brown on top.
    overhead view of white casserole containing sliced potato, milk and mozzarella cheese
  • Remove from the oven and garnish with fresh thyme. Enjoy!
    overhead view of potatoes au gratin in a casserole

Video

Notes

  • To store: You can store leftovers in the fridge for up to 4 days.
  • To reheat: I like reheating potatoes au gratin in the oven but you can reheat them in the microwave as well.
  • To freeze: While you can freeze this recipe for up to 2 weeks, I find it's best to make this recipe fresh.

Nutrition

Serving: 8/1 | Calories: 284kcal | Carbohydrates: 12g | Protein: 7g | Fat: 24g | Cholesterol: 73mg | Sodium: 269mg | Potassium: 245mg | Fiber: 1g | Sugar: 2g