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 the answer. This recipe has been a cherished favorite of mine for years. Imagine layers of tender potatoes, each infused with the rich flavor of roasted garlic, enveloped in a creamy cheese sauce. Whether it’s a bustling weeknight dinner or a cozy family gathering, this dish always brings smiles to the table.
What makes this recipe extra special is its versatility. It can easily be paired with your favorite protein or served as a stunning side dish at any celebration. There’s just something about the combination of cheesy goodness and garlic that makes it irresistible!
Why You’ll Love This Recipe
- Easy to Prepare: With just a few simple steps, you can create a delicious and hearty dish that impresses without stress.
- Family-Friendly Appeal: Kids and adults alike will love the creamy texture and comforting flavors—it’s sure to become a family favorite!
- Make-Ahead Convenience: You can assemble this dish ahead of time and simply pop it in the oven when you’re ready to eat, making it perfect for busy days.
- Delicious Flavor: The roasted garlic adds a depth of flavor that elevates this classic recipe into something truly special.
- Perfect for Any Occasion: From everyday dinners to festive gatherings, this Roasted Garlic Potatoes au Gratin fits right in!

Ingredients You’ll Need
Let’s gather our ingredients! You’ll find these are simple, wholesome items that come together beautifully. It’s all about creating layers of flavor and comfort.
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 Topping
- 1/2 cup (40g) grated parmesan cheese, divided
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Fresh chives, for garnish
Variations
One of the best parts about cooking is making recipes your own! Here are some fun variations to try:
- Add Some Greens: Toss in some sautéed spinach or kale between the layers for an extra nutrient boost.
- Spice It Up: Add a pinch of cayenne pepper or smoked paprika to give your gratin a little kick!
- Cheese Swap: Experiment with different cheeses like cheddar or fontina for unique flavors.
- Herb Infusion: Mix in other herbs such as rosemary or oregano for added aromatics.
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Preheat Your Oven
Start by preheating your oven to 375°F (190°C). This ensures it’s hot enough to create that golden crust on top while cooking the potatoes perfectly.
Step 2: Roast the Garlic
Next up, let’s roast that garlic! Cut the top off your head of garlic, drizzle it with olive oil, sprinkle with salt, and wrap it in foil. Roast it in your preheated oven for about 30 minutes until soft and golden. Roasting enhances its sweetness and takes away any sharpness—trust me; this step is crucial!
Step 3: Prepare Your Baking Dish
While the garlic roasts, grease a 9×13-inch baking dish with some butter. This not only prevents sticking but also adds an extra layer of flavor as it bakes.
Step 4: Slice Your Potatoes
Peel and thinly slice your potatoes—using a mandoline slicer works wonders here! Even slices ensure uniform cooking so every bite has that perfect texture.
Step 5: Layer Those Potatoes
Now comes the fun part! Take those lovely potato slices and arrange them upright in layers within your greased baking dish. It’s like building potato art—keep layering until you’ve used all those beautiful slices.
Step 6: Make Your Creamy Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of your grated parmesan cheese, thyme, nutmeg, salt, and pepper. Heat gently until everything is melted together—this creamy mixture is what makes our gratin so indulgent!
Step 7: Mash That Roasted Garlic
Once your garlic has cooled slightly, squeeze those soft cloves out into a bowl and mash them into a paste. Stir this dreamy roasted garlic paste into your creamy mixture until well combined—it adds such an incredible flavor!
Step 8: Combine Everything Together
Pour that luscious creamy mixture over your beautifully arranged potatoes in the baking dish. Make sure every slice gets coated; this is where all the magic happens! Then cover tightly with kitchen foil.
Step 9: Bake Away!
Pop your covered potato dish into the oven for about 40 minutes. The steam will help cook those potatoes through beautifully.
Step 10: Add More Cheese!
After 40 minutes, remove the foil and sprinkle on shredded Gruyère or mozzarella along with the remaining parmesan cheese on top. This is where we turn things up a notch!
Step 11: Final Bake Time
Return your gratin to the oven uncovered and bake for another 30 minutes until bubbly and golden brown—oh my goodness! The aroma will be irresistible!
Step 12: Cool & Garnish
Once done baking, let your potatoes au gratin cool for just a few minutes before serving—it helps everything set perfectly. Garnish with fresh chives for a pop of color and flavor!
Step 13: Enjoy!
Now grab yourself a generous scoop of these Roasted Garlic Potatoes au Gratin and enjoy each warm bite filled with cheesy goodness! This dish is sure to bring everyone together around the table—happy cooking!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Making the perfect Roasted Garlic Potatoes au Gratin is all about technique and a little love; these tips will help you achieve creamy, cheesy perfection every time!
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Use starchy potatoes: Opting for starchy potatoes like Russets or Yukon Golds helps create a creamy texture. These types break down better during cooking, resulting in a delightful mouthfeel.
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Layer evenly: When arranging the potato slices, make sure they are layered evenly to ensure consistent cooking. This prevents some pieces from being undercooked while others may be overdone.
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Roast garlic for depth: Roasting garlic brings out its natural sweetness and mellows its sharpness. This step enhances the overall flavor of your dish, making it even more comforting and delicious.
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Don’t rush the baking: Allowing the dish to bake slowly at the right temperature helps the flavors meld beautifully. The initial covered baking keeps moisture in, while the uncovered phase creates that glorious golden crust.
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Let it rest: After baking, let your gratin sit for a few minutes before serving. This resting time allows the layers to set, making it easier to serve and enhancing each bite’s flavor.
How to Serve Roasted Garlic Potatoes au Gratin
Serving your Roasted Garlic Potatoes au Gratin can be just as delightful as preparing them! Here are some ideas to present this comforting dish beautifully.
Garnishes
- Fresh chives: Chopped chives add a pop of color and a mild oniony flavor that complements the richness of the gratin.
- Parmesan sprinkle: A light dusting of extra parmesan cheese on top just before serving elevates both presentation and taste.
Side Dishes
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Steamed green beans: Their bright color and fresh crunch create a lovely contrast to the creamy potatoes, adding nutritional balance to your meal.
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Mixed green salad: A simple salad with fresh greens, cucumbers, and a light vinaigrette offers a refreshing balance against the richness of the gratin.
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Roasted carrots: Sweet roasted carrots bring an earthy flavor that pairs wonderfully with cheesy potatoes, creating a harmonious plate.
With these serving suggestions and tips in mind, your Roasted Garlic Potatoes au Gratin is sure to impress family and friends alike! Enjoy every delicious bite!

Make Ahead and Storage
Roasted Garlic Potatoes au Gratin is not only delicious but also perfect for meal prep! You can make it ahead of time and enjoy the comforting flavors throughout the week.
Storing Leftovers
- Allow the dish to cool completely before storing.
- Transfer leftovers to an airtight container.
- Keep in the refrigerator for up to 3-4 days.
Freezing
- To freeze, let the potatoes au gratin cool completely.
- Cut into individual portions and wrap tightly in plastic wrap.
- Place wrapped portions in a freezer-safe bag or container for up to 2 months.
Reheating
- Thaw frozen portions in the refrigerator overnight before reheating.
- Preheat your oven to 350°F (175°C).
- Place in an oven-safe dish, cover with foil, and heat for about 20-25 minutes, or until warmed through.
FAQs
Here are some common questions you might have about Roasted Garlic Potatoes au Gratin.
Can I use different types of cheese for Roasted Garlic Potatoes au Gratin?
Absolutely! While Gruyère and mozzarella are fantastic choices, feel free to experiment with other cheeses like cheddar or fontina for a unique twist on this classic dish.
How do I get my Roasted Garlic Potatoes au Gratin nice and creamy?
To achieve that creamy texture, make sure to blend the roasted garlic well into your cream mixture. The combination of heavy cream and milk helps create that luscious consistency!
Can I prepare Roasted Garlic Potatoes au Gratin ahead of time?
Yes! You can prepare it a day in advance. Just assemble everything, cover it tightly with foil, and store it in the fridge until you’re ready to bake.
What can I serve with Roasted Garlic Potatoes au Gratin?
This dish pairs beautifully with roasted vegetables, grilled chicken, or even a fresh salad. It’s a versatile side that complements many main courses!
Is there a way to make Roasted Garlic Potatoes au Gratin healthier?
You can lighten this recipe by using reduced-fat cream and milk alternatives. Also, consider adding more vegetables like spinach or kale between the layers for added nutrition!
Final Thoughts
I hope you enjoy making this Roasted Garlic Potatoes au Gratin as much as I do! It’s truly a special dish that warms the heart and satisfies the soul. Whether you’re serving it at a family gathering or just indulging on a cozy night in, it’s bound to be a hit. Happy cooking!
Roasted Garlic Potatoes au Gratin
If you’re craving a dish that offers pure comfort and satisfaction, look no further than Roasted Garlic Potatoes au Gratin. This beloved recipe features layers of tender, thinly sliced potatoes infused with the rich essence of roasted garlic, all enveloped in a creamy cheese sauce. Perfect for busy weeknights or special family gatherings, this gratin balances cheesy indulgence with the warm flavors of garlic, making it a guaranteed crowd-pleaser. Whether served alongside your favorite protein or as the star of the table at any celebration, these Roasted Garlic Potatoes au Gratin are sure to delight!
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately six people 1x
- Category: Side Dish
- Method: Baking
- Cuisine: American
Ingredients
- 8–9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head garlic
- 1 cup heavy cream
- 1/4 cup whole milk
- 1 tablespoon unsalted butter
- 1 teaspoon fresh thyme leaves
- 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: Cut off the top of the head, drizzle with olive oil, wrap in foil, and roast for about 30 minutes until soft.
- Grease a 9×13-inch baking dish with butter.
- Slice the potatoes thinly using a mandoline slicer.
- Layer potato slices upright in the greased dish.
- In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, salt, and pepper until melted together.
- Squeeze out roasted garlic cloves into a bowl and mash into a paste; stir into the creamy mixture.
- Pour the mixture over layered potatoes and cover with foil.
- Bake covered for about 40 minutes; then uncover and sprinkle with remaining cheeses.
- Return to oven for another 30 minutes until bubbly and golden brown.
- Let cool slightly before serving and garnish with fresh chives.
Nutrition
- Serving Size: 1 cup (200g)
- Calories: 350
- Sugar: 2g
- Sodium: 500mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 3g
- Protein: 10g
- Cholesterol: 60mg
