Roasted Garlic Potatoes au Gratin
If you’re looking for a cozy dish that wraps you in warmth and comfort, then Roasted Garlic Potatoes au Gratin is the answer! This recipe has been a staple in my home, bringing family and friends together over hearty servings of tender potatoes smothered in creamy, cheesy goodness. The subtle sweetness of roasted garlic adds a special touch that elevates this dish from ordinary to extraordinary.
Perfect for busy weeknights or family gatherings, these potatoes are not just a side—they’re the star of the table! Whether you’re hosting a festive dinner or just craving something comforting after a long day, this recipe will not disappoint.
Why You’ll Love This Recipe
- Deliciously Rich Flavor: The combination of roasted garlic and creamy cheese makes every bite utterly satisfying.
- Easy to Make: With simple steps, this dish comes together quickly, allowing you to focus on other parts of your meal.
- Family-Friendly Appeal: Kids and adults alike love the cheesy layers; it’s a hit at any family dinner.
- Make-Ahead Convenience: Prepare it ahead of time, pop it in the oven when ready, and enjoy less stress during mealtime.
- Versatile Side Dish: Pair it with your favorite protein or serve it alongside fresh salads for a complete meal.

Ingredients You’ll Need
Let’s gather our simple, wholesome ingredients for Roasted Garlic Potatoes au Gratin. Each one plays an important role in creating that delicious flavor and creamy texture we all love!
- 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 wonderfully flexible! Here are some fun ways to mix things up:
- Add More Veggies: Toss in some spinach or sautéed mushrooms between the potato layers for added nutrition and flavor.
- Cheese Alternatives: Swap Gruyère for your favorite melting cheese like cheddar or gouda to change up the profile.
- Herb Infusion: Experiment with different herbs such as rosemary or oregano to give your gratin its own unique twist.
- Spice it Up: Add a pinch of cayenne pepper or red pepper flakes for a little kick!
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 that your potatoes cook evenly and develop that lovely golden crust we all adore.
Step 2: Roast the Garlic
Next, let’s give our garlic some love! Cut the top off the head of garlic to expose the cloves. Wrap it in aluminum foil with a drizzle of olive oil and a pinch of salt, then roast it in the oven for about 30 minutes. Roasting softens the garlic and enhances its sweetness, making it melt into our creamy sauce beautifully.
Step 3: Prepare Your Baking Dish
While the garlic roasts, grease a 9×13-inch baking dish. This will help prevent sticking and make cleanup easier later on!
Step 4: Slice Your Potatoes
Now it’s time for those starchy potatoes! Peel them and thinly slice them—using a mandoline slicer works wonders here for uniformity. Even slices ensure that everything cooks at the same rate.
Step 5: Layer Those Potatoes
Arrange your potato slices upright in layers within your greased dish. This not only looks beautiful but allows each slice to soak up that creamy goodness!
Step 6: Make the Cream Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, salt, and pepper. Stir until everything is well mixed and heated through but avoid boiling. This mixture is what brings richness to our potatoes!
Step 7: Add Roasted Garlic
Once your garlic is perfectly roasted and cool enough to handle, squeeze out those soft cloves into a bowl and mash them into a paste. Stir this garlicky goodness into your cream mixture—this step is crucial as it infuses all those flavors throughout.
Step 8: Combine Everything
Pour your creamy garlic mixture over the layered potatoes in your baking dish. Make sure they’re evenly coated so every bite bursts with flavor! Cover tightly with kitchen foil.
Step 9: Bake Covered
Bake these beauties in your preheated oven for about 40 minutes. The cover helps steam the potatoes until they’re tender.
Step 10: Add Cheese Topping
Remove the foil and sprinkle shredded Gruyère or mozzarella cheese along with remaining parmesan on top. The cheese will create that irresistible golden crust we crave!
Step 11: Bake Uncovered
Return your dish back into the oven uncovered for an additional 30 minutes. Keep an eye on it until everything is bubbly and golden brown.
Step 12: Cool Before Serving
Once done baking, let your Roasted Garlic Potatoes au Gratin sit for a few minutes before serving. This allows everything to settle nicely!
Step 13: Garnish & Enjoy!
Top with fresh chives before serving; they add such lovely color and freshness! Now dig in—you deserve every delicious bite!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Creating the perfect Roasted Garlic Potatoes au Gratin is easier than you think, and these tips will help you achieve a dish that’s creamy, cheesy, and oh-so-satisfying!
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Use Starchy Potatoes: Starchy potatoes like Russets or Yukon Golds will give you that creamy texture you desire. They break down nicely during cooking, making for a rich and velvety gratin.
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Don’t Rush the Garlic: Roasting the garlic is essential for bringing out its sweet, mellow flavor. Take your time and ensure it’s perfectly golden; this will enhance the overall taste of your dish.
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Layer Wisely: When layering your potatoes in the baking dish, alternate between different cheese layers to ensure every bite is packed with flavor. This also helps with even melting and browning!
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Let It Rest: Allowing the gratin to sit for a few minutes after baking helps it set and makes serving easier. This prevents it from falling apart on your plate and improves presentation.
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Experiment with Cheese: While Gruyère is traditional, don’t hesitate to mix in other cheeses like cheddar or fontina for additional flavors! Each cheese brings its unique character to the dish.
How to Serve Roasted Garlic Potatoes au Gratin
Roasted Garlic Potatoes au Gratin is not only delicious but also stunning when served. Here are some delightful ways to present this comforting dish.
Garnishes
- Fresh Herbs: Chopped fresh chives or parsley add a pop of color and freshness that complements the rich flavors of the gratin.
- Cracked Pepper: A sprinkle of freshly cracked black pepper adds a touch of elegance and enhances the dish’s flavor without overwhelming it.
Side Dishes
- Steamed Broccoli: The crisp-tender texture of steamed broccoli balances out the creaminess of the gratin, making for a well-rounded meal.
- Roasted Brussels Sprouts: With their slightly nutty flavor and caramelized edges, roasted Brussels sprouts provide a delightful contrast to the soft potatoes.
- Mixed Green Salad: A light salad with a tangy vinaigrette cuts through the richness of the potatoes and refreshes your palate between bites.
- Grilled Chicken or Fish: For added protein, serve alongside grilled chicken or fish seasoned simply with lemon and herbs; they pair beautifully with the cheesy potatoes without overpowering them.
With these tips and serving ideas, your Roasted Garlic Potatoes au Gratin will be sure to impress at any gathering! Enjoy this cozy dish that’s perfect for sharing with friends and family.

Make Ahead and Storage
Roasted Garlic Potatoes au Gratin is a fantastic choice for meal prep, making it easy to enjoy delicious, comforting food throughout the week. You can prepare it in advance, store leftovers, or even freeze portions for later use.
Storing Leftovers
- Allow the dish to cool completely before storing.
- Transfer any leftovers to an airtight container.
- Refrigerate for up to 3-4 days.
- Reheat portions in the microwave or oven until warmed through.
Freezing
- Let the potatoes cool completely after baking.
- Portion them into freezer-safe containers or bags.
- Label and date your containers before placing them in the freezer.
- For best quality, consume frozen portions within 2-3 months.
Reheating
- For best results, reheat in the oven at 350°F (175°C) until heated through and cheese is bubbly.
- Alternatively, use the microwave for quick reheating; cover with a damp paper towel to retain moisture.
FAQs
Here are some common questions about Roasted Garlic Potatoes au Gratin that can help clarify this delicious recipe.
Can I use other types of cheese in Roasted Garlic Potatoes au Gratin?
Absolutely! You can experiment with different cheeses like cheddar, fontina, or a blend of your favorites. Just keep in mind that the flavor will change slightly based on your choice of cheese.
How do I make Roasted Garlic Potatoes au Gratin gluten-free?
This recipe is naturally gluten-free as long as you use gluten-free cream and milk. Always check labels to ensure your dairy products do not contain any gluten additives.
Can I prepare Roasted Garlic Potatoes au Gratin ahead of time?
Yes! You can assemble the dish a day in advance. Just cover it tightly with foil and refrigerate until you’re ready to bake it.
What types of potatoes work best for Roasted Garlic Potatoes au Gratin?
Starchy potatoes like Russets or Yukon Golds are ideal because they create a creamy texture when baked. Avoid waxy potatoes as they won’t provide the same result.
How do I prevent my Roasted Garlic Potatoes au Gratin from becoming too watery?
Make sure to slice the potatoes evenly and allow excess moisture to evaporate during baking. If needed, you can also reduce the amount of cream slightly.
Final Thoughts
I hope you find joy in preparing this Roasted Garlic Potatoes au Gratin recipe! It’s a special dish that brings warmth and comfort to any table. Whether it’s a family dinner or a get-together with friends, this recipe is sure to impress. Enjoy every creamy bite, and don’t hesitate to share your experience with me—I’d love to hear how it turns out for you!
Dinner
Roasted Garlic Potatoes au Gratin
If you’re searching for a dish that embodies comfort and warmth, look no further than Roasted Garlic Potatoes au Gratin. This delightful recipe features layers of tender, thinly sliced potatoes enveloped in a creamy, cheesy sauce infused with the sweetness of roasted garlic. As it bakes, the top forms a golden crust that is irresistibly inviting. Perfect for weeknight dinners or festive gatherings, this dish is sure to become a favorite at your table.
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately 8
- Category: Side Dish
- Method: Baking
- Cuisine: American
Ingredients
- 8–9 medium starchy potatoes
- 1 head of 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
- 2 cups shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
Instructions
- Preheat your oven to 375°F (190°C).
- Cut the top off the garlic head, wrap it in foil with olive oil and salt, then roast for about 30 minutes.
- Grease a 9×13-inch baking dish.
- Peel and thinly slice the potatoes.
- Arrange potato slices upright in layers within the baking dish.
- In a saucepan over medium heat, combine cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; heat until well mixed but do not boil.
- Squeeze roasted garlic into a bowl and mash; stir into the cream mixture.
- Pour mixture over layered potatoes and cover tightly with foil.
- Bake covered for about 40 minutes until tender.
- Uncover and sprinkle remaining cheese on top; bake for an additional 30 minutes until bubbly and golden brown.
- Let cool slightly before serving; garnish with fresh chives.
Nutrition
- Serving Size: 1 serving
- Calories: 360
- Sugar: 2g
- Sodium: 480mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 34g
- Fiber: 3g
- Protein: 9g
- Cholesterol: 50mg