Roasted Garlic Potatoes au Gratin
If you’re looking for the ultimate comfort food, let me introduce you to my beloved Roasted Garlic Potatoes au Gratin! This dish has a way of bringing warmth to any gathering. Imagine layers of tender potatoes swimming in a creamy sauce, infused with the sweet, rich flavor of roasted garlic and topped with bubbling cheese. It’s the kind of dish that makes everyone feel at home, whether it’s a cozy weeknight dinner or a festive family celebration.
What I love most about this recipe is how it effortlessly combines simple ingredients into something truly special. It’s always a hit at potlucks or family feasts, and trust me—everyone will be going back for seconds!
Why You’ll Love This Recipe
- Easy to Prepare: With just a few steps, you can create an impressive side dish that looks and tastes like it took hours.
- Family-Friendly Appeal: Everyone loves cheesy, creamy potatoes! This dish is sure to please even the pickiest eaters.
- Make-Ahead Convenience: You can prep everything in advance and pop it in the oven when you’re ready to serve.
- Delicious Flavor: The combination of roasted garlic and creamy cheese creates an unforgettable taste experience that will have your taste buds dancing.

Ingredients You’ll Need
This recipe calls for simple, wholesome ingredients that you might already have in your kitchen. Here’s what you’ll need to whip up these delightful Roasted Garlic Potatoes au Gratin:
- 8-9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head garlic, cut the top off
- 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
- 1/2 cup (40g) grated parmesan cheese, divided
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
- Fresh chives, for garnish
Variations
This recipe is quite flexible, so feel free to make it your own! Here are some fun ideas to customize your Roasted Garlic Potatoes au Gratin:
- Add Veggies: Toss in some sautéed spinach or caramelized onions for extra flavor and nutrition.
- Try Different Cheeses: Experiment with different cheeses like cheddar or Monterey Jack for a unique twist!
- Make It Vegan: Substitute heavy cream with coconut cream and use vegan cheese for a plant-based version.
- Spice It Up: Add red pepper flakes or your favorite herbs for an extra kick!
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Roast the Garlic
Preheat your oven to 375°F (190°C). Begin by roasting the garlic; cutting the top off exposes those sweet cloves. Drizzling with olive oil and seasoning with salt enhances its natural flavor as it roasts into soft, golden goodness. Wrapping it tightly in foil ensures perfect tenderness.
Step 2: Prepare Your Baking Dish
As your garlic roasts, grease a 9×13-inch baking dish with butter. This step is crucial—it prevents your delicious layers from sticking and makes cleanup easier later.
Step 3: Slice the Potatoes
Peel and thinly slice those starchy potatoes. Using a mandoline slicer works wonders here, giving you even slices that cook beautifully together.
Step 4: Layer the Potatoes
Take each stack of potato slices and arrange them upright in layers within your prepared dish. This not only looks stunning but allows each slice to soak up that creamy goodness!
Step 5: Create the Creamy Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, salt, and pepper. Heating gently helps meld these flavors together while keeping everything nice and creamy without boiling.
Step 6: Incorporate Roasted Garlic
Once your garlic is roasted, squeeze those lovely cloves out and mash them into a paste. Stir this heavenly mixture into your cream sauce—this is where magic happens!
Step 7: Pour Over Potatoes
Pour that luscious creamy mixture over your layered potatoes. Make sure they are evenly coated; every bite deserves that rich flavor! Cover tightly with kitchen foil to trap all that steam while baking.
Step 8: Bake Initially
Slide the baking dish into your preheated oven for about 40 minutes. Baking covered allows the potatoes to soften perfectly without drying out.
Step 9: Add Cheese Topping
Remove the foil and sprinkle shredded Gruyère or mozzarella cheese along with the remaining parmesan on top. This will create that irresistible bubbly crust we all crave!
Step 10: Final Bake
Return your beautiful creation back to the oven uncovered for another 30 minutes until golden brown and bubbly. The aroma wafting through your kitchen will have everyone eagerly waiting!
Step 11: Cool & Garnish
Once done, remove from oven and let it cool slightly before serving—this makes it easier to cut into portions. Garnish generously with fresh chives for that final touch!
Now you’re ready to enjoy this comforting dish! Whether it’s on its own or paired with other favorites, these Roasted Garlic Potatoes au Gratin are sure to delight everyone at your table!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Creating the perfect Roasted Garlic Potatoes au Gratin is easier than you might think! Here are some handy tips to ensure your dish turns out creamy, cheesy, and utterly delicious.
- Use starchy potatoes: Opting for starchy potatoes like Russets or Yukon Golds will yield a creamier texture in your gratin. These potatoes have a higher starch content, which helps them break down while cooking, resulting in that lovely velvety consistency.
- Don’t skip roasting the garlic: Roasting garlic transforms its sharp flavor into a sweet, mellow delight. This step adds depth to your dish and balances the richness of the cheeses beautifully.
- Layer evenly: When stacking the potato slices, aim for even layers. This ensures that each bite has a harmonious blend of flavors and textures while allowing even cooking throughout.
- Let it rest before serving: After baking, allow your gratin to sit for about 10 minutes before diving in. This resting time lets the layers set slightly and makes it easier to serve without falling apart.
- Experiment with cheese: While Gruyère is traditional, feel free to mix in other cheeses like cheddar or fontina for added flavor complexity. Each type can contribute its unique taste profile and melt beautifully.
How to Serve Roasted Garlic Potatoes au Gratin
When presenting your Roasted Garlic Potatoes au Gratin, consider making it a star on your dining table! This dish is not only delicious but also visually appealing with its golden cheese crust and creamy layers.
Garnishes
- Fresh herbs: Chopped chives or parsley add a burst of color and freshness that complements the rich flavors of the gratin.
- Cracked black pepper: A sprinkle of freshly cracked black pepper enhances the overall flavor without overwhelming the dish’s creamy essence.
Side Dishes
- Simple Green Salad: A light salad with mixed greens, cherry tomatoes, and a lemon vinaigrette provides a refreshing contrast to the richness of the gratin.
- Steamed Broccoli: Bright green steamed broccoli offers a nutritious balance and adds a pop of color to your plate.
- Roasted Carrots: Sweet roasted carrots bring a delightful caramelized flavor that pairs wonderfully with the savory potatoes.
- Grilled Chicken or Fish: For protein lovers, grilled chicken or fish seasoned simply with herbs brings an extra layer of satisfaction to your meal without overshadowing the star dish.
Enjoy crafting this delectable comfort food masterpiece! Your family and friends will be raving about it long after dinner is over.

Make Ahead and Storage
These Roasted Garlic Potatoes au Gratin are perfect for meal prep, making it easy to enjoy a comforting dish any day of the week. You can prepare them ahead of time and store them, allowing you to savor the rich flavors without the last-minute hustle.
Storing Leftovers
- Allow the potatoes to cool completely before storing.
- Transfer leftovers to an airtight container.
- Refrigerate for up to 3 days.
Freezing
- Let the dish cool completely before freezing.
- Cut into portions and wrap each tightly with plastic wrap, then place in a freezer-safe container.
- Freeze for up to 2 months for best quality.
Reheating
- Thaw overnight in the refrigerator if frozen.
- Reheat in a preheated oven at 350°F (175°C) until heated through, about 20-30 minutes.
- For quicker reheating, use a microwave but be cautious as this may affect texture.
FAQs
Here are some common questions about Roasted Garlic Potatoes au Gratin that might help you on your cooking journey!
Can I use different 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 flavor profile.
How can I make Roasted Garlic Potatoes au Gratin healthier?
You can lighten this recipe by using low-fat cream and milk alternatives or incorporating more vegetables, such as spinach or mushrooms, between the potato layers.
How long do Roasted Garlic Potatoes au Gratin last in the fridge?
When properly stored in an airtight container, they will last about 3 days in the refrigerator.
Can I make Roasted Garlic Potatoes au Gratin without heavy cream?
Yes! You can substitute heavy cream with a mixture of whole milk and Greek yogurt for a lighter version while still maintaining creaminess.
Final Thoughts
This Roasted Garlic Potatoes au Gratin recipe holds a special place in my heart as it brings warmth and comfort to any meal. I hope you find joy in preparing this deliciously creamy dish that’s sure to impress family and friends. Give it a try, and enjoy every cheesy bite!
Roasted Garlic Potatoes au Gratin
Indulge in the irresistible comfort of Roasted Garlic Potatoes au Gratin, a dish that transforms simple ingredients into an extraordinary experience. Picture layers of tender, thinly sliced potatoes enveloped in a creamy garlic-infused sauce, crowned with bubbling, golden cheese. This delightful side dish is perfect for any occasion, from cozy weeknight dinners to festive gatherings. Its rich flavor and creamy texture are sure to have everyone coming back for seconds. Easy to prepare and make-ahead friendly, these Roasted Garlic Potatoes au Gratin will quickly become a cherished favorite at your table.
- 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
- 1/2 cup grated parmesan cheese (divided)
- 2 cups shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
- Fresh chives for garnish
Instructions
- Preheat the oven to 375°F (190°C). Cut the top off the garlic head, drizzle with olive oil, wrap in foil, and roast until soft.
- Grease a 9×13-inch baking dish with butter.
- Peel and thinly slice the potatoes.
- Layer the potato slices upright in the prepared dish.
- In a pan over medium heat, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; heat without boiling.
- Squeeze out roasted garlic cloves and mash them into a paste; stir into the cream sauce.
- Pour the mixture over the potatoes and cover tightly with foil.
- Bake covered for about 40 minutes until potatoes soften.
- Remove foil and sprinkle remaining cheeses on top; return to oven uncovered for another 30 minutes until golden brown.
- Allow cooling slightly before serving; garnish with fresh chives.
Nutrition
- Serving Size: 1 cup (200g)
- Calories: 356
- Sugar: 3g
- Sodium: 552mg
- Fat: 21g
- Saturated Fat: 11g
- Unsaturated Fat: 9g
- Trans Fat: 0g
- Carbohydrates: 31g
- Fiber: 3g
- Protein: 10g
- Cholesterol: 51mg
