Roasted Garlic Potatoes au Gratin
Roasted Garlic Potatoes au Gratin is a delightful dish that brings comfort and flavor to your dinner table. This recipe features layers of tender, thinly sliced potatoes enveloped in a creamy, cheesy sauce infused with the aromatic essence of roasted garlic. It’s perfect for family gatherings, holiday feasts, or even a cozy weeknight meal. The combination of rich textures and savory flavors makes this dish a standout choice for any occasion.
Why You’ll Love This Recipe
- Easy to Prepare: With straightforward steps, you can whip up this delicious dish without fuss.
- Flavor Explosion: The roasted garlic elevates the taste, offering a unique twist on traditional au gratin potatoes.
- Versatile Dish: Serve it as a side for meats or enjoy it as a main course paired with a fresh salad.
- Crowd-Pleaser: This recipe is sure to impress your guests and leave them asking for seconds!
- Comforting and Satisfying: Rich and creamy, it embodies the essence of comfort food.
Tools and Preparation
Before diving into the cooking process, gather your kitchen essentials. Having the right tools will ensure you achieve the best results with your Roasted Garlic Potatoes au Gratin.
Essential Tools and Equipment
- Baking dish (9×13-inch)
- Aluminium foil
- Mandoline slicer (optional)
- Saucepan
- Whisk
Importance of Each Tool
- Baking dish: A sturdy dish ensures even cooking and is essential for layering your potatoes.
- Mandoline slicer: Achieving uniform slices enhances both presentation and cooking consistency.
- Saucepan: Necessary for combining the creamy mixture before pouring over the potatoes.

Ingredients
For the Potatoes
- 8-9 medium starchy potatoes (about 1.2kg), thinly sliced
- 1 head garlic, cut the top off
- Salt and pepper to taste
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
For Topping
- 2 cups (about 220g) shredded Gruyère or mozzarella cheese
- Fresh chives, for garnish
How to Make Roasted Garlic Potatoes au Gratin
Step 1: Preheat the Oven
Preheat your oven to 375°F (190°C). This ensures that your potatoes cook evenly and achieve that perfect golden finish.
Step 2: Roast the Garlic
- Cut the top off the head of garlic to expose the cloves.
- Place the garlic head on a piece of aluminium foil.
- Drizzle with olive oil and season with salt.
- Wrap it tightly in foil and roast in the preheated oven for about 30 minutes until soft and golden.
Step 3: Prepare Baking Dish and Potatoes
- While the garlic roasts, grease your baking dish with butter.
- Peel and thinly slice the potatoes using a mandoline slicer for even thickness.
Step 4: Layer the Potatoes
Take a stack of sliced potatoes and arrange them upright in layers within your greased baking dish. Continue layering until all potatoes are used.
Step 5: Make Creamy Mixture
In a saucepan:
1. Combine heavy cream, milk, butter, half of the grated parmesan cheese, thyme, nutmeg, salt, and pepper.
2. Heat over medium until butter melts; do not let it boil.
Step 6: Add Roasted Garlic to Cream Mixture
Once garlic is roasted:
1. Squeeze out soft cloves from their skins into a bowl.
2. Mash them into a paste.
3. Stir this roasted garlic into your creamy mixture until well combined.
Step 7: Combine Everything
Pour this creamy mixture evenly over your layered potatoes in the baking dish. Cover tightly with kitchen foil.
Step 8: Bake
Bake in preheated oven for 40 minutes.
Step 9: Add Cheese Topping
Remove foil:
1. Top with shredded Gruyère or mozzarella cheese along with remaining grated parmesan cheese.
2. Return to oven uncovered for an additional 30 minutes until cheese is bubbly and golden brown.
Step 10: Serve
Once done, remove from oven and let cool slightly before serving. Garnish with fresh chives for an extra touch!
Enjoy this indulgent Roasted Garlic Potatoes au Gratin as a delicious side or main dish!
How to Serve Roasted Garlic Potatoes au Gratin
Roasted Garlic Potatoes au Gratin makes for a delightful side dish that can elevate any meal. Here are some creative serving suggestions to complement this creamy and flavorful dish.
Pair with a Protein
- Grilled Chicken: The smoky flavor of grilled chicken pairs perfectly with the rich creaminess of the potatoes.
- Roasted Turkey: Serve alongside roasted turkey for a comforting holiday feast.
- Beef Tenderloin: A juicy beef tenderloin enhances the savory garlic notes in the potatoes.
Add Fresh Vegetables
- Steamed Broccoli: Steamed broccoli adds a vibrant color and nutritional balance to your plate.
- Sautéed Green Beans: Crisp green beans provide a crunchy texture that contrasts nicely with the soft potatoes.
- Mixed Green Salad: A refreshing mixed salad with a light vinaigrette can cleanse the palate between bites.
Garnish Creatively
- Chopped Fresh Herbs: Sprinkle freshly chopped parsley or dill on top for an added burst of flavor and color.
- Crumbled Feta Cheese: For a tangy twist, add crumbled feta on top right before serving.
How to Perfect Roasted Garlic Potatoes au Gratin
To achieve the best results with your Roasted Garlic Potatoes au Gratin, consider these helpful tips.
- Use Starchy Potatoes: Choose starchy potatoes like Russets for a creamy texture that holds up well during baking.
- Slice Evenly: Ensure potato slices are uniform in thickness (about 1/8 inch) for even cooking and consistent texture.
- Don’t Rush Roasting Garlic: Take your time roasting garlic; it develops deeper flavors when cooked slowly until golden brown.
- Layer Wisely: Layer potatoes tightly within the dish to ensure they cook evenly and absorb all the creamy goodness.
- Let it Rest: Allow the gratin to rest for a few minutes after baking; this helps it set for easier serving.
Best Side Dishes for Roasted Garlic Potatoes au Gratin
When planning your meal, consider these fantastic side dishes to serve alongside Roasted Garlic Potatoes au Gratin. Each option adds variety and complements the flavors beautifully.
- Herb-Roasted Carrots: Sweet carrots roasted with herbs bring sweetness and color to your plate.
- Caesar Salad: A classic Caesar salad offers crisp romaine and crunchy croutons, balancing the richness of the potatoes.
- Garlic Butter Asparagus: Sautéed asparagus in garlic butter adds a touch of elegance and fresh flavor.
- Creamed Spinach: This creamy side dish provides a delicious contrast to the cheesy potatoes while adding nutrition.
- Crispy Brussels Sprouts: Oven-roasted Brussels sprouts offer a nutty flavor and satisfying crunch that pairs well with creamy dishes.
- Balsamic Glazed Zucchini: Balsamic glaze adds sweetness and acidity, making zucchini a refreshing side choice.
Common Mistakes to Avoid
When making Roasted Garlic Potatoes au Gratin, it’s easy to make some common mistakes. Here are a few tips to ensure your dish turns out perfectly.
- Boldly slice your potatoes: Cutting the potatoes too thick can lead to uneven cooking. Aim for even, thin slices using a mandoline for the best results.
- Boldly overcooking the garlic: Roasting garlic too long can turn it bitter. Keep an eye on it and remove it once it’s soft and golden.
- Boldly neglecting seasoning: Under-seasoning can result in bland potatoes. Be generous with salt and pepper to enhance the flavors.
- Boldly skimping on cheese: Not adding enough cheese will affect the creamy texture and flavor. Use the full amount recommended for a rich taste.
- Boldly forgetting to let it cool: Cutting into the dish immediately after baking can cause it to fall apart. Allow it to sit for a few minutes before serving.

Storage & Reheating Instructions
Refrigerator Storage
- Store leftover Roasted Garlic Potatoes au Gratin in an airtight container.
- They will last for up to 3-4 days in the refrigerator.
Freezing Roasted Garlic Potatoes au Gratin
- If you want to freeze, use a freezer-safe container or wrap tightly in aluminum foil.
- The dish can be frozen for up to 2-3 months.
Reheating Roasted Garlic Potatoes au Gratin
- Oven: Preheat your oven to 350°F (175°C) and cover with foil. Heat for about 20-25 minutes until warmed through.
- Microwave: Place a portion on a microwave-safe plate and heat in short intervals (1-2 minutes), stirring between, until hot.
- Stovetop: Heat in a skillet over low heat, stirring occasionally until warmed through.
Frequently Asked Questions
Here are some common questions about making Roasted Garlic Potatoes au Gratin.
Can I use other types of cheese in Roasted Garlic Potatoes au Gratin?
Yes, feel free to experiment with different cheeses like cheddar or fontina for varied flavors.
How do I ensure my Roasted Garlic Potatoes au Gratin is creamy?
Be sure to use enough cream and cheese while layering. Also, allow them to bake covered initially to retain moisture.
Can I add vegetables to my Roasted Garlic Potatoes au Gratin?
Absolutely! You can incorporate sautéed spinach or mushrooms for added flavor and nutrition.
What should I serve with Roasted Garlic Potatoes au Gratin?
This dish pairs well with grilled meats or a fresh salad as a side dish for a balanced meal.
How do I know when my potatoes are done cooking?
The potatoes should be fork-tender, and the top should be bubbly and golden brown when fully cooked.
Final Thoughts
Roasted Garlic Potatoes au Gratin is not just a comforting side; it’s also versatile enough for any meal occasion. Feel free to customize this recipe by adding your favorite vegetables or experimenting with different cheeses. Give it a try – you’ll love its creamy richness!
Roasted Garlic Potatoes au Gratin
Roasted Garlic Potatoes au Gratin is a deliciously creamy dish that transforms simple potatoes into a gourmet experience. Infused with the rich flavor of roasted garlic, this layered potato bake features tender slices enveloped in a luscious cheese sauce, making it an ideal side for any meal or a comforting main course. Perfect for family gatherings or cozy weeknight dinners, this dish is sure to impress guests and satisfy cravings. With its delightful combination of textures and savory notes, Roasted Garlic Potatoes au Gratin is truly a dish everyone will love.
- Prep Time: 20 minutes
- Cook Time: 70 minutes
- Total Time: 1 hour 30 minutes
- Yield: Serves 8
- 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 tsp fresh thyme leaves
- 1/4 tsp nutmeg
- 1/2 cup grated parmesan cheese, divided
- 2 cups shredded Gruyère or mozzarella cheese
- Salt and pepper to taste
Instructions
- Preheat the oven to 375°F (190°C).
- Roast the garlic by cutting the top off, seasoning with olive oil and salt, wrapping in foil, and baking for about 30 minutes.
- Grease a baking dish with butter and thinly slice the potatoes.
- Layer the potatoes upright in the baking dish until fully arranged.
- In a saucepan, combine heavy cream, milk, butter, half of the parmesan cheese, thyme, nutmeg, salt, and pepper; heat until combined but not boiling.
- Squeeze the soft roasted garlic into the creamy mixture; stir until well blended.
- Pour the creamy mixture over the layered potatoes and cover with foil.
- Bake for 40 minutes, then add remaining cheeses on top and bake uncovered for an additional 30 minutes until bubbly and golden brown.
- Let cool slightly before serving; garnish with fresh chives.
Nutrition
- Serving Size: 1 cup (200g)
- Calories: 360
- Sugar: 2g
- Sodium: 560mg
- Fat: 22g
- Saturated Fat: 12g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 3g
- Protein: 9g
- Cholesterol: 60mg
