Roasted Garlic Potatoes Au Gratin – Creamy & Delicious
Roasted garlic potatoes au gratin are a dish that truly sings on any table. There’s something utterly comforting and deeply satisfying about tender, thinly sliced potatoes bathed in a creamy, cheesy sauce, all elevated by the sweet, mellow magic of roasted garlic. It’s the kind of side dish that makes you pause, close your eyes, and savor every single bite. People adore this classic for its rich, indulgent flavor and its ability to transform simple ingredients into something extraordinary. What truly sets this version of potatoes au gratin apart is the depth of flavor infused by the slow-roasting of garlic, which mellows its bite and brings out its natural sweetness, creating an unparalleled aroma and taste. It’s a culinary hug in a baking dish, perfect for cozy nights in or as a show-stopping accompaniment to your favorite main course.

Roasted Garlic Potatoes au Gratin
This Roasted Garlic Potatoes au Gratin is the ultimate comfort food. Imagin extracte tender, thinly sliced potatoes, infused with the sweet, mellow flavor of roasted garlic, all nestled in a creamy, cheesy sauce and baked to golden perfection. It’s a dish that’s both elegant enough for a special occasion and hearty enough for a weeknight treat. The secret to its incredible depth of flavor lies in roasting the garlic first, which transforms its pungent bite into a sweet, spreadable paste that melds beautifully with the potatoes and dairy. This recipe is my go-to for impressing guests or simply treating myself to something truly delicious.
Ingredients:
Instructions:
Roasting the Garlic:
Assembling and Baking the Gratin:

Conclusion:
There you have it – your guide to crafting the most delicious Roasted Garlic Potatoes au Gratin! This dish is a true showstopper, effortlessly combining the creamy indulgence of classic gratin with the sweet, mellow notes of roasted garlic. It’s the perfect balance of comforting and sophisticated, making it an ideal side for a weeknight family dinner or a dazzling addition to your next holiday feast. The golden-brown, crispy top gives way to tender, garlicky potatoes bathed in a rich, cheesy sauce – it’s pure culinary bliss. Don’t be intimidated; the roasting process for the garlic is incredibly simple and adds an unparalleled depth of flavor.
I highly encourage you to give this Roasted Garlic Potatoes au Gratin recipe a try. It’s incredibly versatile. Serve it alongside roasted chicken, pan-seared steak, or even a hearty vegetarian lentil loaf. For a lighter touch, a crisp green salad is a perfect accompaniment. Feeling adventurous? Consider adding a layer of thinly sliced leeks, or experiment with different cheeses like Gruyère or Fontina for a unique twist. I promise, the aroma alone will have your kitchen smelling heavenly, and the taste will have everyone asking for seconds!
Frequently Asked Questions:
Can I make this recipe ahead of time?
Yes, you can! You can assemble the gratin up to a day in advance. Cover it tightly with plastic wrap and refrigerate. When ready to bake, remove it from the refrigerator about 30 minutes before baking and follow the recipe instructions, adding a few extra minutes to the baking time as needed to ensure it’s heated through and bubbly.
What kind of potatoes work best for this recipe?
For the best results with Roasted Garlic Potatoes au Gratin, opt for starchy or all-purpose potatoes like Yukon Golds or Russets. These varieties will become tender and creamy when baked, absorbing the delicious sauce beautifully. Waxy potatoes can also work, but they might hold their shape a little more.

Roasted Garlic Potatoes au Gratin
A rich and creamy potato gratin infused with the sweet flavor of roasted garlic, topped with a blend of Parmesan and Gruyère cheese.
Ingredients
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8-9 medium starchy potatoes (about 1.2kg), thinly sliced
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1 large head garlic, cut the top off
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1 cup (250 ml) heavy cream / double cream
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1/4 cup (60 ml) whole milk
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1 tablespoon unsalted butter, plus more for greasing the baking dish
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1 tsp fresh thyme leaves (or 1/3 tsp dried thyme)
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1/4 tsp nutmeg
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1/2 cup (40g) grated parmesan cheese, divided
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2 cups (about 220g) shredded Gruyère or mozzarella cheese
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Salt and pepper to taste
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Fresh chives, for garnish
Instructions
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Step 1
Preheat oven to 400°F (200°C). Place the head of garlic, cut side up, on a piece of foil. Drizzle with olive oil and wrap tightly. Roast for 30-40 minutes, until softened. Let cool slightly, then squeeze the roasted garlic cloves out of their skins. -
Step 2
While garlic roasts, prepare the potatoes. Peel and thinly slice the potatoes. Toss with salt and pepper. -
Step 3
In a saucepan, combine the heavy cream, milk, butter, thyme, and nutmeg. Heat gently until the butter melts and the mixture is warm, but not boiling. Stir in half of the Parmesan cheese and the roasted garlic cloves, mashing them into the cream mixture. -
Step 4
Grease a baking dish with butter. Layer the sliced potatoes evenly in the dish. Pour the warm cream mixture over the potatoes, ensuring they are mostly submerged. -
Step 5
Cover the baking dish tightly with foil. Bake for 45 minutes. Remove the foil, sprinkle the remaining Parmesan and the shredded Gruyère or mozzarella cheese evenly over the top. -
Step 6
Continue baking, uncovered, for another 20-25 minutes, or until the potatoes are tender and the cheese is bubbly and golden brown. Let stand for 10 minutes before garnishing with fresh chives and serving.
Important Information
Nutrition Facts (Per Serving)
It is important to consider this information as approximate and not to use it as definitive health advice.
Allergy Information
Please check ingredients for potential allergens and consult a health professional if in doubt.
