Roasted Garlic Potatoes au Gratin
If you’re looking for a dish that warms the heart and brings everyone together, then look no further than Roasted Garlic Potatoes au Gratin. This recipe is my ultimate comfort food, combining layers of tender potatoes with the rich flavor of roasted garlic and creamy cheese. Whether it’s a busy weeknight dinner or a special occasion with family, this dish always shines on the table. Plus, the aroma that fills your kitchen while it’s baking is simply irresistible!
What makes this recipe so special is its simplicity and the way it elevates ordinary ingredients into something extraordinary. Each bite melts in your mouth, making it a true crowd-pleaser that friends and family will request time and again.
Why You’ll Love This Recipe
- Easy to Prepare: With just a few simple steps, you can create a delicious side dish without any fuss.
- Family-Friendly Appeal: Everyone loves cheesy potatoes! This recipe is sure to please both kids and adults alike.
- Make-Ahead Convenience: You can prepare this dish in advance and bake it when you’re ready to serve, making meal planning a breeze.
- Comforting Flavor: The combination of roasted garlic and creamy cheese creates an indulgent flavor that feels like a warm hug.
- Versatile Serving Options: It pairs beautifully with various main dishes or can be enjoyed on its own as a hearty vegetarian option.

Ingredients You’ll Need
These are simple, wholesome ingredients that come together beautifully in Roasted Garlic Potatoes au Gratin. Gather them all before you start cooking!
For the Potatoes
- 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 Roasted Garlic Potatoes au Gratin recipe is quite flexible! Feel free to make it your own with these variations:
- Add Vegetables: Toss in some sautéed spinach or roasted broccoli for added nutrition and color.
- Change Up the Cheese: Experiment with different types of cheese like cheddar or fontina for unique flavors.
- Spice It Up: Add a pinch of cayenne pepper or red pepper flakes for a little heat.
- Herb Swap: Try using rosemary or sage instead of thyme for a different herbal touch.
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Roast the Garlic
Preheat your oven to 375°F (190°C). Start by preparing the garlic; cutting off the top exposes the cloves inside. Wrap it in aluminum foil after drizzling with olive oil and seasoning with salt. Roasting will soften the cloves and bring out their sweet flavor — this step is essential for adding depth to our creamy sauce!
Step 2: Prepare Your Baking Dish
While the garlic roasts, grease a 9×13-inch (23×33 cm) baking dish. This prevents sticking and ensures easy serving later on.
Step 3: Slice the Potatoes
Peel and thinly slice your potatoes. Using a mandoline slicer helps achieve uniform slices that cook evenly. Layering them upright adds visual appeal to your dish.
Step 4: 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 blends smoothly — no boiling needed here! This rich mixture will soak into those lovely potato layers.
Step 5: Incorporate the Roasted Garlic
Once your garlic has cooled slightly, squeeze out those soft cloves into a bowl and mash them into a paste. Mix this luscious garlic goodness into your creamy sauce until well combined — trust me; this step elevates your potatoes au gratin!
Step 6: Assemble Everything
Pour the creamy mixture over your layered potatoes in the baking dish. Make sure every slice gets coated! Cover tightly with foil to keep moisture in during baking.
Step 7: Bake Until Tender
Pop your dish in the oven for about 40 minutes covered. This allows all those flavors to meld together nicely while cooking through.
Step 8: Add More Cheese!
After 40 minutes, remove the foil carefully (watch out for steam!). Sprinkle on remaining cheeses generously. Then return it to bake uncovered for another 30 minutes until bubbly and golden brown on top.
Step 9: Let It Rest
Once done baking, let your Roasted Garlic Potatoes au Gratin cool slightly before serving — this helps set up those cheesy layers for easy slicing.
Step 10: Garnish & Enjoy!
Top with freshly chopped chives for color and flavor before diving in! Enjoy every comforting bite of this delicious dish with loved ones around you!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Making Roasted Garlic Potatoes au Gratin can seem intimidating, but with a few simple tips, you can ensure your dish turns out perfectly every time!
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Use starchy potatoes: Starchy potatoes like Russets or Yukon Golds create a creamier texture and hold up well in baking. They absorb flavors beautifully, making your dish even more delicious!
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Layer thoughtfully: When stacking the potato slices, aim for even layers to ensure an equal cooking time. This way, every bite will have that creamy garlic goodness.
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Don’t skip the resting time: Allowing the dish to rest for a few minutes after baking helps it set up nicely. This will make serving easier and help maintain the perfect texture.
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Experiment with cheeses: While Gruyère and mozzarella are classics, feel free to mix in cheeses like cheddar or fontina for an exciting twist. Each cheese brings its unique flavor profile to the dish!
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Make it ahead: These potatoes au gratin can be prepared a day in advance. Just assemble everything, cover it tightly, and refrigerate until ready to bake. Perfect for stress-free entertaining!
How to Serve Roasted Garlic Potatoes au Gratin
Roasted Garlic Potatoes au Gratin is not only delicious but also visually appealing, making it a fantastic centerpiece for your table. Here are some ideas on how to present this comforting dish beautifully.
Garnishes
- Fresh herbs: A sprinkle of chopped fresh parsley or rosemary adds a pop of color and freshness that complements the rich flavors of the gratin.
- Chives: Sliced chives provide a mild onion flavor and a delightful crunch that enhances both presentation and taste.
Side Dishes
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Simple Green Salad: A light green salad with mixed greens, cherry tomatoes, and a balsamic vinaigrette balances the richness of the gratin perfectly. The acidity cuts through the creaminess and refreshes your palate.
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Steamed Asparagus: Tender steamed asparagus drizzled with olive oil and lemon juice offers a bright contrast in texture and flavor. It’s quick to prepare and pairs beautifully with cheesy dishes.
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Roasted Vegetables: A medley of seasonal roasted vegetables—like carrots, bell peppers, or zucchini—adds vibrant colors and additional nutrients to your meal. The caramelization from roasting enhances their natural sweetness.
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Grilled Chicken or Fish: For those looking for protein options, grilled chicken or fish seasoned simply with herbs makes a great accompaniment. Their lightness complements the richness of the potatoes without overpowering them.
These suggestions will help you elevate your dining experience while enjoying these delightful Roasted Garlic Potatoes au Gratin!

Make Ahead and Storage
Roasted Garlic Potatoes au Gratin is a fantastic dish for meal prep, allowing you to enjoy this creamy delight any night of the week. Preparing it in advance can save you time and effort, making it perfect for busy schedules.
Storing Leftovers
- Allow the potatoes to cool completely before storing.
- Place leftovers in an airtight container and refrigerate for up to 3-4 days.
- Ensure that the dish is covered well to keep moisture in and flavors intact.
Freezing
- To freeze, let the potatoes cool thoroughly and then transfer them to a freezer-safe container.
- Use parchment paper between layers if stacking to prevent sticking.
- Store in the freezer for up to 2 months. For best quality, consume within one month.
Reheating
- Thaw frozen potatoes overnight in the refrigerator before reheating.
- Reheat in the oven at 350°F (175°C) covered with foil for about 20-30 minutes or until heated through.
- For a crispy top, uncover during the last 10 minutes of heating.
FAQs
If you have questions about this recipe, you’re not alone! Here are some common inquiries:
Can I make Roasted Garlic Potatoes au Gratin without heavy cream?
Absolutely! You can substitute heavy cream with a mixture of whole milk and a little extra butter for a lighter version. Just be sure to adjust the seasoning accordingly!
How do I store Roasted Garlic Potatoes au Gratin leftovers?
Store leftover Roasted Garlic Potatoes au Gratin in an airtight container in the refrigerator for up to 3-4 days. Be sure they are cooled completely before sealing.
Can I use different types of cheese in this recipe?
Yes! Feel free to experiment with different cheeses like cheddar or Monterey Jack. Each will give your Roasted Garlic Potatoes au Gratin its unique twist!
How long does it take to bake Roasted Garlic Potatoes au Gratin?
The baking time is approximately 40 minutes covered and an additional 30 minutes uncovered, totaling about 1 hour and 10 minutes for perfect cheesy goodness!
Is there a way to make this dish vegan-friendly?
Yes! You can use plant-based cream alternatives, dairy-free cheese, and replace butter with vegan margarine. This will still give you a creamy texture while keeping it dairy-free!
Final Thoughts
I hope you enjoy making these Roasted Garlic Potatoes au Gratin as much as I do! This dish is not just about comfort food; it’s about sharing warmth and joy around the dinner table. Whether it’s a family gathering or a cozy night at home, these potatoes are sure to impress. Happy cooking, and don’t forget to share your delicious results!
Roasted Garlic Potatoes au Gratin
Indulge in the delightful comfort of Roasted Garlic Potatoes au Gratin, a dish that combines tender layers of starchy potatoes with the rich, aromatic flavor of roasted garlic and creamy cheese. Perfect for any occasion, this recipe is a guaranteed crowd-pleaser that fills your kitchen with an irresistible aroma as it bakes. The creamy texture and cheesy goodness make it a heartwarming side dish that pairs beautifully with grilled chicken or can be enjoyed on its own. Easy to prepare and make ahead, these potatoes are sure to become a staple at your dining table.
- 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 garlic
- 1 cup (250 ml) heavy cream
- 1/4 cup (60 ml) whole milk
- 1 tablespoon unsalted butter
- 1 tsp fresh thyme leaves
- 1/4 tsp nutmeg
- 1/2 cup (40g) grated parmesan cheese
- 2 cups (220g) shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
Instructions
- Preheat the oven to 375°F (190°C). Wrap the garlic head in foil after drizzling with olive oil and salt, then roast for about 40 minutes.
- Grease a 9×13-inch baking dish.
- Thinly slice the potatoes using a mandoline for even cooking.
- In a saucepan, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper over medium heat until smooth.
- Squeeze the roasted garlic into a bowl and mash it into a paste. Mix into the cream mixture.
- Layer the potato slices in the baking dish and pour the creamy mixture over them.
- Cover with foil and bake for approximately 40 minutes.
- Remove foil, top with remaining cheeses, and bake uncovered for another 30 minutes until golden brown.
- Let cool slightly before serving; garnish with fresh chives.
Nutrition
- Serving Size: Approximately 200g
- Calories: 350
- Sugar: 2g
- Sodium: 550mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 3g
- Protein: 10g
- Cholesterol: 50mg
