Roasted Garlic Potatoes au Gratin
If you’re looking for a dish that wraps you in warmth and comfort, then Roasted Garlic Potatoes au Gratin is exactly what you need. This recipe is one I cherish deeply, not just because it’s delicious, but also because it brings everyone together. Imagine layers of tender potatoes infused with the rich flavor of roasted garlic, all enveloped in creamy cheese. It’s perfect for busy weeknights or those cozy family gatherings where everyone gathers around the table with smiles.
What makes this dish even more special is its versatility. Whether you’re serving it at a holiday feast or as a delightful side for a casual dinner, Roasted Garlic Potatoes au Gratin never fails to impress. Trust me, once you try it, it will quickly become a staple in your recipe collection!
Why You’ll Love This Recipe
- Easy Preparation: With straightforward steps, this recipe lets you enjoy cooking without stress.
- Family-Friendly Appeal: Kids and adults alike adore the cheesy goodness packed into every layer.
- Make-Ahead Convenience: You can prepare it ahead of time and simply bake when you’re ready to eat.
- Delicious Flavor: The combination of roasted garlic and creamy cheeses creates an unforgettable taste experience.

Ingredients You’ll Need
Let’s gather some simple, wholesome ingredients to create this lovely dish. Each component plays a role in building that wonderful flavor and creamy texture we love so much.
For the Potatoes
- 8-9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head garlic, cut the top off
For the Creamy Mixture
- 1 cup (250 ml) heavy cream / double cream
- 1/4 cup (60 ml) whole milk
- 1 tablespoon unsalted butter, plus more for greasing the baking dish
- 1 tsp fresh thyme leaves (or 1/3 tsp dried thyme)
- 1/4 tsp nutmeg
- Salt and pepper to taste
For the Topping
- 1/2 cup (40g) grated parmesan cheese, divided
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Fresh chives, for garnish
Variations
This Roasted Garlic Potatoes au Gratin recipe is wonderfully flexible! Feel free to mix things up according to your taste or dietary preferences.
- Add Some Greens: Toss in some sautéed spinach or kale for added nutrition and color.
- Make It Spicy: Sprinkle in some red pepper flakes for a little kick!
- Cheese Swap: Experiment with different cheeses like cheddar or fontina if you’re feeling adventurous.
- Herb Infusion: Try adding rosemary or oregano instead of thyme for a different herbaceous flavor.
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Preheat Your Oven
Start by preheating your oven to 375°F (190°C). This step ensures that your potatoes will cook evenly and get that lovely golden crust on top.
Step 2: Roast the Garlic
Next, we’ll roast our garlic! Cut off the top of the head to expose those sweet cloves inside. Place it on a piece of aluminum foil, drizzle with olive oil, sprinkle with salt, and wrap it up tight. Pop it into the oven for about 30 minutes until it’s soft and golden. This roasting process transforms garlic into something incredibly sweet and mellow—perfect for our dish!
Step 3: Prepare Your Baking Dish
While your garlic is roasting away, grease a 9×13-inch baking dish with a bit of butter. This will help prevent sticking and make serving easier later on.
Step 4: Slice Your Potatoes
Now it’s time to peel and slice your potatoes! For uniform slices that cook evenly, I recommend using a mandoline slicer if you have one. Aim for thin slices—this helps them cook through beautifully while absorbing all that creamy goodness.
Step 5: Layer Those Potatoes
Take those lovely potato slices and start layering them upright in your greased baking dish. It’s okay if they’re not perfectly arranged; just pile them high! Continue layering until all potatoes are used up, creating a beautiful stack.
Step 6: Create the Creamy Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, and a pinch of salt and pepper. Stir until everything is melted together nicely—just don’t let it boil! This mixture is what makes our potatoes so rich and creamy.
Step 7: Add Roasted Garlic
Once your garlic has cooled slightly, squeeze out those beautiful cloves into a bowl and mash them into a paste. Stir this roasted garlic paste into your creamy mixture until well combined. The aroma will be simply divine!
Step 8: Pour Over Potatoes
Carefully pour that luscious creamy mixture over your layered potatoes in the baking dish. Make sure they’re evenly coated—every bite should be packed with flavor!
Step 9: Bake Covered
Cover your dish tightly with kitchen foil and bake in the preheated oven for 40 minutes. This allows the potatoes to steam initially before they get that lovely browning effect.
Step 10: Cheese It Up!
After 40 minutes, remove the foil and sprinkle shredded Gruyère or mozzarella cheese along with the remaining parmesan on top. Return it to the oven uncovered for another 30 minutes until everything is bubbly and golden brown.
Step 11: Cool Before Serving
Once done baking, carefully take out your heavenly creation from the oven (the smell will be incredible!). Let it cool for a few minutes before diving in—this helps everything set just right.
Step 12: Garnish & Enjoy!
Before serving, add some fresh chives on top for color and extra flavor. Now dig in—you’ve made Roasted Garlic Potatoes au Gratin! Enjoy every cheesy bite of this comforting side dish that’s sure to bring smiles around your dinner table.
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Making Roasted Garlic Potatoes au Gratin is a delightful experience, and with these pro tips, you can take your dish to the next level!
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Choose the Right Potatoes: Starchy potatoes like Russets or Yukon Golds are ideal because they create a creamy texture and hold up well during baking.
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Layering is Key: For even cooking and flavor distribution, ensure that your potato layers are tightly packed. This allows the cream mixture to seep in beautifully.
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Don’t Rush the Garlic: Roasting the garlic until it’s golden enhances its sweetness and depth of flavor. Take your time; it’s worth it!
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Experiment with Cheese: While Gruyère is fantastic, try mixing in other cheeses like sharp cheddar or fontina for a unique taste profile. Each cheese brings its own character!
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Let It Rest: Allowing the dish to cool slightly before serving helps it set, making it easier to slice and serve while still retaining that creamy goodness.
How to Serve Roasted Garlic Potatoes au Gratin
Presenting your Roasted Garlic Potatoes au Gratin can be just as enjoyable as preparing them! Here are some ideas to elevate your serving experience.
Garnishes
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Fresh Herbs: Chopped fresh chives or parsley not only add a pop of color but also a refreshing taste that complements the richness of the dish.
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Cracked Black Pepper: A sprinkle of freshly cracked black pepper adds a touch of spice and enhances the overall flavor profile without overpowering it.
Side Dishes
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Steamed Asparagus: Lightly steamed asparagus drizzled with lemon juice offers a crisp contrast to the creamy potatoes, making for a well-rounded meal.
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Garden Salad: A fresh garden salad with mixed greens, cherry tomatoes, and a tangy vinaigrette provides brightness that balances out the richness of the gratin.
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Roasted Brussels Sprouts: These caramelized bites bring an earthy flavor that pairs wonderfully with garlic, creating an inviting harmony on your plate.
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Grilled Chicken or Fish: For a heartier meal, grilled chicken or fish seasoned with herbs makes a perfect protein companion that complements the flavors beautifully without overshadowing them.
With these tips and serving suggestions, your Roasted Garlic Potatoes au Gratin will not only taste amazing but also look stunning on any table! Enjoy every bite!

Make Ahead and Storage
This Roasted Garlic Potatoes au Gratin recipe is perfect for meal prep, making it an excellent choice for busy weeknights or family gatherings. You can prepare it ahead of time and enjoy the comforting flavors when you’re ready!
Storing Leftovers
- Allow the potatoes au gratin to cool completely before storing.
- Transfer leftovers to an airtight container.
- Store in the refrigerator for up to 3-4 days.
Freezing
- Let the dish cool completely before freezing.
- Place portions in freezer-safe containers or wrap tightly in plastic wrap and then foil.
- Freeze for up to 2 months. For best results, label with the date.
Reheating
- Thaw overnight in the refrigerator if frozen.
- Preheat your oven to 350°F (175°C).
- Cover the dish with foil and heat for 20-25 minutes or until warmed through.
- Remove the foil for the last few minutes to crisp up the cheese.
FAQs
Here are some common questions about Roasted Garlic Potatoes au Gratin that might help you as you prepare this delightful dish!
Can I use other types of cheese in Roasted Garlic Potatoes au Gratin?
Absolutely! While Gruyère and mozzarella work beautifully, feel free to experiment with other cheeses like cheddar or fontina for a unique twist on flavor.
How can I make Roasted Garlic Potatoes au Gratin healthier?
You can substitute half-and-half or a lower-fat cream alternative for a lighter version. Additionally, using less cheese or incorporating more vegetables can enhance nutritional value without sacrificing taste.
Can I make Roasted Garlic Potatoes au Gratin without heavy cream?
Yes! You can use a combination of whole milk and a bit of cornstarch as a thickener, or even plant-based cream alternatives if you’d like a dairy-free option.
What do I serve with Roasted Garlic Potatoes au Gratin?
These potatoes pair wonderfully with grilled chicken, roasted vegetables, or a fresh green salad. They make an excellent side dish for any hearty main course!
Final Thoughts
I truly hope you give this Roasted Garlic Potatoes au Gratin recipe a try! It’s not just about satisfying your hunger; it’s about creating warm memories around the dinner table. Enjoy every creamy layer and garlicky bite, and don’t hesitate to share this comforting dish with your loved ones. Happy cooking!
Roasted Garlic Potatoes au Gratin
Indulge in the comforting warmth of Roasted Garlic Potatoes au Gratin, a dish that brings family and friends together around the table. This delightful recipe features layers of tender, starchy potatoes infused with sweet roasted garlic and enveloped in a rich, creamy cheese mixture. Perfect for busy weeknights or special occasions, this gratin is sure to impress everyone with its cheesy goodness and irresistible aroma. With easy preparation and make-ahead convenience, it’s no surprise that this dish will quickly become a staple in your kitchen. Enjoy every cheesy bite as you create delicious memories!
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately 8 people 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
Ingredients
- 8–9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head of garlic, cut the top off
- 1 cup heavy cream
- 1/4 cup whole milk
- 1 tablespoon unsalted butter
- 1 teaspoon fresh thyme leaves (or 1/3 teaspoon dried thyme)
- 1/4 teaspoon nutmeg
- Salt and pepper to taste
- 1/2 cup grated parmesan cheese, divided
- 2 cups shredded Gruyère or mozzarella cheese
- Fresh chives for garnish
Instructions
- Preheat your oven to 375°F (190°C).
- Roast the garlic: Wrap the head of garlic in foil with olive oil and salt; bake for about 30 minutes until soft.
- Grease a 9×13-inch baking dish with butter.
- Peel and thinly slice the potatoes.
- Layer the potato slices upright in the baking dish.
- In a saucepan, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; heat until melted but do not boil.
- Squeeze out roasted garlic cloves into a bowl; mash into a paste and stir into the creamy mixture.
- Pour the creamy mixture over the layered potatoes evenly.
- Cover with foil and bake for 40 minutes; remove foil, add remaining cheeses on top, and bake uncovered for an additional 30 minutes until golden brown.
- Allow to cool slightly before garnishing with fresh chives.
Nutrition
- Serving Size: 1/8 of the dish (approximately 180g)
- Calories: 320
- Sugar: 3g
- Sodium: 410mg
- Fat: 21g
- Saturated Fat: 12g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 3g
- Protein: 8g
- Cholesterol: 55mg
