Roasted Garlic Potatoes au Gratin
If you’re looking for a cozy dish that warms both the heart and the belly, then you need to try my Roasted Garlic Potatoes au Gratin! This recipe is not just a meal; it’s a celebration of comfort food at its finest. Imagine layers of thinly sliced potatoes, lovingly infused with the rich flavor of roasted garlic, all enveloped in creamy, cheesy goodness. It’s the kind of dish that brings everyone together around the table, making it perfect for family gatherings or even just a busy weeknight dinner.
What I love most about this recipe is how simple it is to make while still being incredibly satisfying. Whether you’re serving it as a side dish or making it the star of your dinner, Roasted Garlic Potatoes au Gratin will surely impress your loved ones!
Why You’ll Love This Recipe
- Comforting flavors: The blend of roasted garlic and creamy cheese creates a warm hug for your taste buds.
- Easy to prepare: With straightforward steps and minimal fuss, this recipe is perfect for cooks of all levels.
- Crowd-pleaser: It’s hard to resist cheesy potatoes! This dish often disappears quickly at gatherings.
- Make-ahead friendly: You can assemble it in advance and bake it when you’re ready, making life a little easier.
- Versatile for occasions: From weeknight dinners to holiday feasts, this recipe fits right in.

Ingredients You’ll Need
Let’s gather some simple, wholesome ingredients to create this delicious dish. I promise you won’t need anything fancy—just good-quality staples that you might already have on hand!
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
- 1/2 cup (40g) grated parmesan cheese, divided
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
For Garnish
- Fresh chives
Variations
One of the best things about this Roasted Garlic Potatoes au Gratin recipe is its flexibility. You can easily customize it to suit your taste or dietary needs. Here are some fun variations:
- Add vegetables: Mix in sautéed spinach or mushrooms for an extra layer of flavor and nutrition.
- Try different cheeses: Swap out Gruyère for cheddar or gouda if you want to change up the flavor profile.
- Spice it up: Add a pinch of cayenne pepper or red pepper flakes for a subtle kick that pairs beautifully with the creamy sauce.
- Herb infusion: Experiment with other herbs like rosemary or oregano instead of thyme for a different twist.
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Preheat Your Oven
Before we dive into cooking, preheat your oven to 375°F (190°C). This step ensures that your potatoes get perfectly cooked through and bubbly when they hit the heat.
Step 2: Roast the Garlic
Start by preparing your garlic. Cut off the top of the head to expose those wonderful cloves. Wrap it in aluminum foil with a drizzle of olive oil and a sprinkle of salt. Roasting garlic brings out its sweetness and mellows its sharpness—trust me, this is where the magic begins! Place it in your preheated oven for about 30 minutes. Let it cool before handling; you want those cloves soft and golden.
Step 3: Prepare Your Baking Dish
While your garlic roasts away, grease a 9×13-inch baking dish with some butter. This will prevent sticking and help achieve that lovely crispy edge we all adore.
Step 4: Slice Your Potatoes
Now it’s time to slice those starchy potatoes! Use a mandoline slicer if you have one—it makes getting even slices so much easier. Aim for about an eighth of an inch thick so they cook evenly in the oven.
Step 5: Layer Those Potatoes
Take those potato slices and arrange them upright in layers within your greased baking dish. It’s okay if they are snug; just keep layering until you’ve used all your potatoes. This method not only looks beautiful but also ensures every bite is full of flavor.
Step 6: Make the Creamy Mixture
In a saucepan over medium heat, combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, along with salt and pepper. Stir until everything melds together nicely but avoid boiling—this will keep your mixture smooth.
Step 7: Incorporate Roasted Garlic
Once your garlic has cooled down enough to handle, squeeze those roasted cloves out from their skins into a bowl and mash them into a paste. Stir this heavenly roasted garlic paste into your creamy mixture until well combined. This step infuses every layer with amazing flavor!
Step 8: Assemble It All Together
Pour that creamy goodness over your arranged potatoes evenly so every slice gets coated in luscious sauce. Cover tightly with kitchen foil—this helps steam the potatoes initially as they bake.
Step 9: Bake Covered
Pop your baking dish into the oven for about 40 minutes covered. This allows those potatoes to get tender while absorbing all that delicious creaminess.
Step 10: Add Cheese Topping
After 40 minutes have passed, carefully remove the foil and sprinkle on shredded Gruyère or mozzarella cheese along with the remaining parmesan on top. Oh boy! Now return it to bake uncovered for another 30 minutes until bubbling and beautifully golden brown.
Step 11: Cool & Garnish
Once done baking, let your masterpiece cool slightly before serving—this helps everything settle nicely together! Finally, garnish with fresh chives just before enjoying.
There you have it! A warm bowl of Roasted Garlic Potatoes au Gratin ready to delight everyone at your table!
Pro Tips for Making Roasted Garlic Potatoes au Gratin
Creating the perfect Roasted Garlic Potatoes au Gratin can be a delightful experience, and with a few handy tips, you’ll impress everyone at the table!
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Use starchy potatoes: Choosing starchy potatoes like Russets or Yukon Golds will give your dish a creamy texture as they break down while baking, making each bite melt in your mouth.
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Slice evenly: For uniform cooking, aim for thin slices. A mandoline slicer is your best friend here, ensuring that every potato layer cooks at the same rate and absorbs the creamy goodness.
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Don’t skip the roasting: Roasting garlic brings out its sweetness and depth of flavor. It’s worth the extra step to achieve that rich taste that compliments the creaminess of the dish beautifully.
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Layer wisely: When arranging your potato layers, alternate directions for a visually appealing presentation and ensure even distribution of flavors throughout the dish.
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Let it rest: After removing the gratin from the oven, allow it to sit for a few minutes before serving. This resting time helps the dish set and makes it easier to slice and serve.
How to Serve Roasted Garlic Potatoes au Gratin
Serving your Roasted Garlic Potatoes au Gratin can turn a simple meal into something special. Here are some ideas to present this delicious comfort food beautifully!
Garnishes
- Fresh chives: Chopped chives add a pop of color and a mild onion flavor that complements the richness of the cheese.
- Parmesan shavings: A sprinkle of fresh Parmesan shavings on top just before serving enhances both presentation and taste.
- Paprika dusting: A light dusting of smoked paprika not only adds visual appeal but also introduces a subtle smokiness that pairs wonderfully with garlic.
Side Dishes
- Roasted vegetables: Seasonal roasted vegetables such as carrots, Brussels sprouts, or asparagus provide a colorful and nutritious balance to the creamy gratin.
- Simple green salad: A fresh salad with mixed greens, cherry tomatoes, and a light vinaigrette offers a refreshing contrast to the rich potatoes.
- Grilled chicken or fish: Pairing with grilled proteins like chicken breast or salmon creates a well-rounded meal while keeping it light.
- Herb-infused bread: Serve with slices of crusty bread infused with herbs for sopping up any leftover creamy sauce—it’s too good to waste!
With these serving tips and accompaniments, your Roasted Garlic Potatoes au Gratin will shine brilliantly at any gathering! Enjoy every comforting bite!

Make Ahead and Storage
Roasted Garlic Potatoes au Gratin is perfect for meal prep, allowing you to enjoy the comforting flavors throughout the week. You can easily prepare this dish in advance and store it for later meals without losing its delightful taste.
Storing Leftovers
- Allow the potatoes to cool completely before storing.
- Transfer any leftovers to an airtight container.
- Store in the refrigerator for up to 3-4 days.
Freezing
- Cool the dish completely before freezing.
- Wrap it tightly with plastic wrap and then aluminum foil or place it in a freezer-safe container.
- It can be frozen for up to 2 months. For best results, thaw overnight in the refrigerator before reheating.
Reheating
- Preheat your oven to 350°F (175°C).
- Place the dish covered with foil in the oven for about 20-30 minutes or until heated through.
- If reheating from frozen, extend the time and check until the center is warm.
FAQs
Here are some common questions about Roasted Garlic Potatoes au Gratin that might help clarify your cooking experience!
Can I use different types of cheese in Roasted Garlic Potatoes au Gratin?
Absolutely! While Gruyère and mozzarella are fantastic choices, you can experiment with other cheeses such as cheddar or fontina for a unique flavor profile.
How do I ensure my Roasted Garlic Potatoes au Gratin don’t turn out watery?
To prevent excess moisture, make sure to slice your potatoes thinly and let them rest after slicing. This allows some of the starches to release moisture. Additionally, avoid using waxy potatoes, as they contain more water.
Can I make Roasted Garlic Potatoes au Gratin ahead of time?
Yes! You can prepare this dish a day in advance. Just follow all steps except baking; cover it tightly and refrigerate until you’re ready to bake.
What makes Roasted Garlic Potatoes au Gratin special?
The combination of creamy layers infused with roasted garlic creates a rich and comforting dish that’s perfect for gatherings or cozy nights at home. The caramelized garlic adds depth that elevates this classic recipe.
How long does it take to cook Roasted Garlic Potatoes au Gratin?
The total cooking time is about 1 hour and 10 minutes after preparation. Baking takes approximately 40 minutes covered and an additional 30 minutes uncovered for that deliciously golden top.
Final Thoughts
I hope you find joy in making Roasted Garlic Potatoes au Gratin! This dish is not only a comforting addition to your dinner table but also a wonderful way to bring friends and family together. With its creamy layers and delightful garlic flavor, it’s sure to become a favorite. Enjoy every bite, and don’t hesitate to share your own twist on this recipe!
Dinner
Roasted Garlic Potatoes au Gratin
Indulge in the comforting warmth of Roasted Garlic Potatoes au Gratin, a dish that transforms humble ingredients into a delightful culinary experience. Imagine layers of tender, thinly sliced potatoes infused with the sweet, mellow flavor of roasted garlic and enveloped in a rich, creamy sauce. Topped with gooey melted cheese, this dish is perfect for family gatherings or cozy weeknight dinners. Easy to prepare yet utterly satisfying, Roasted Garlic Potatoes au Gratin brings everyone together at the dinner table. With its adaptability to various tastes, you can customize it to make it your own. Get ready to impress your loved ones with this crowd-pleaser!
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves approximately 6
- Category: Main
- Method: Baking
- Cuisine: Comfort Food
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, divided
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
Instructions
- Preheat your oven to 375°F (190°C).
- Roast the garlic by cutting off the top of the head, wrapping it in foil with olive oil and salt, and baking for about 30 minutes.
- Grease a 9×13-inch baking dish with butter.
- Thinly slice the potatoes and layer them upright in the greased dish.
- In a saucepan over medium heat, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; stir gently until combined.
- Squeeze roasted garlic from skins into a bowl and mash into a paste; mix into the creamy mixture.
- Pour the creamy sauce over the potatoes evenly and cover with foil.
- Bake covered for about 40 minutes; then uncover and sprinkle remaining cheese on top before baking for an additional 30 minutes until golden brown.
- Allow cooling slightly before serving and garnish with fresh chives.
Nutrition
- Serving Size: 1 cup (240g)
- Calories: 330
- Sugar: 3g
- Sodium: 410mg
- Fat: 21g
- Saturated Fat: 11g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 3g
- Protein: 8g
- Cholesterol: 50mg
