Garlic Rosemary and Parmesan Au Gratin Potatoes

Elevate your next meal with these Garlic Rosemary and Parmesan Au Gratin Potatoes—an indulgent, flavor-packed side dish that's perfect for special occasions or cozy dinners at home. Layers of tender Russet potatoes are bathed in a luxurious blend of heavy cream, milk, and fragrant garlic, infused with fresh rosemary, a hint of nutmeg, and just the right amount of seasoning. Topped with generous layers of grated Parmesan cheese, this casserole bakes to golden, bubbly perfection, creating a crispy, cheesy crust that contrasts beautifully with the creamy interior. Whether you’re serving this alongside roasted meats or seasonal vegetables, this recipe is a guaranteed crowd-pleaser. Plus, it’s easy to make ahead for stress-free entertaining!

Nutriscore Rating: 60/100

Prep Time:20 mins

Cook Time:75 mins

Total Time:95 mins

Servings: 6

Ingredients

• 6 medium Russet potatoes
• 3 large Garlic cloves
• 2 teaspoons Fresh rosemary
• 2 cups Heavy cream
• 1 cup Milk
• 2 tablespoons Unsalted butter
• 1.5 cups Grated Parmesan cheese
• 1 teaspoon Salt
• 0.5 teaspoon Black pepper
• 0.25 teaspoon Nutmeg

Directions

Step 1

Preheat your oven to 375°F (190°C) and lightly grease a 9x13-inch baking dish with butter or non-stick spray.

Step 2

Peel the potatoes and slice them thinly (about 1/8-inch thick) using a sharp knife or a mandoline slicer. Set them aside in a bowl of cold water to prevent browning.

Step 3

Finely mince the garlic cloves and chop the fresh rosemary leaves. Set both aside.

Step 4

In a medium saucepan over medium heat, combine the heavy cream, milk, minced garlic, chopped rosemary, salt, black pepper, and nutmeg. Heat the mixture until it just begins to simmer, then remove it from heat. Do not let it boil.

Step 5

Drain and pat the potato slices dry with a clean kitchen towel or paper towels. Layer one-third of the potato slices evenly in the prepared baking dish.

Step 6

Pour one-third of the cream mixture over the potato slices and sprinkle one-third of the Parmesan cheese evenly on top.

Step 7

Repeat the layering process two more times, finishing with the cream mixture and Parmesan cheese on top.

Step 8

Dot the surface with small pieces of the unsalted butter for added richness.

Step 9

Cover the dish tightly with aluminum foil and bake in the preheated oven for 50 minutes.

Step 10

Remove the foil and continue baking for another 20-25 minutes, or until the top is golden brown and the potatoes are fork-tender.

Step 11

Allow the dish to sit for 10 minutes before serving to let the cream thicken slightly.

Step 12

Serve warm as a side dish paired with roasted meats or vegetables.

Nutrition Facts

Serving size	(1936.7g)

Amount per serving	% Daily Value*
Calories	3452.7

Total Fat 225.5g	0%
Saturated Fat 137.2g	0%
Polyunsaturated Fat 0.2g
Cholesterol 684.0mg	0%
Sodium 4805.3mg	0%
Total Carbohydrate 247.0g	0%
Dietary Fiber 19.1g	0%
Total Sugars 23.9g
Protein 87.7g	0%

Vitamin D 107.4IU	0%
Calcium 1824.2mg	0%
Iron 12.7mg	0%
Potassium 6292.0mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 60.3%

Protein: 10.4%

Carbs: 29.3%