As I stood in my kitchen, the crisp air outside hinted at the change of seasons, nudging me to whip up something comforting and warm. That’s when I decided to create my Beautiful Cheesy Root Vegetable Gratin—a delightful mix of sweet potatoes, beets, and parsnips that creates a cozy, festive vibe. This recipe not only tantalizes the taste buds with its creamy, garlicky goodness but also serves as an impressive holiday side dish that’ll become a staple at family gatherings. Plus, it’s a vegetarian-friendly way to add a touch of vibrant color to your table. Whether you’re entertaining guests or treating yourself to a comforting meal at home, get ready to discover how easy it is to transform everyday ingredients into something truly special. Isn’t it time to bring a bit of warmth into your kitchen?

Why is this gratin a must-try?
Flavorful Comfort: The combination of earthy beets, sweet potatoes, and parsnips creates a delightful depth of flavor that will satisfy everyone at your table.
Impressive Presentation: Layers of vibrant vegetables not only look stunning but are sure to impress your guests at dinner parties or holiday feasts.
Easy to Make: With straightforward steps, you’ll find this dish is simple enough to whip up even on busy days—just like my Cheesy Christmas Lasagna for festive occasions!
Make-Ahead Friendly: Prepare it in advance and pop it into the oven when you’re ready. That’s a time-saver perfect for holiday meals!
Rich & Creamy Texture: A luscious, cheesy topping of Gruyère forms the crowning glory, adding an irresistible melt-in-your-mouth experience.
Versatile Fun: Feel free to swap in your favorite root veggies or cheese varieties to make this dish your own!
Cheesy Root Vegetable Gratin Ingredients
• Get ready to create comfort in every bite!
For the Gratin
- Unsalted Butter – Provides richness and helps prevent sticking; use softened butter to grease the baking dish.
- Sweet Potatoes – Adds sweetness and a creamy texture; use 1-2 long (about 2 inches thick), peeled.
- Parsnips – Contributes sweetness and a hint of earthy flavor; use 3-4 large, ends trimmed and peeled.
- Beets – Adds earthiness and vibrant color; use 3-5 small, peeled.
- Heavy Cream – Essential for creaminess; use 14 tablespoons divided, or substitute with whole milk for a lighter but less creamy option.
- Grated Parmesan – Imparts umami flavor and aids in browning; use 4 ounces divided.
- Fresh Minced Thyme – Adds aromatic herbal notes; use 1 tablespoon divided, plus more for garnish.
- Minced Garlic – Provides savory depth; use 1 clove.
- Shredded Gruyère – Brings a nutty, melty finish; use 1 ounce.
- Salt and Pepper – Essential for seasoning; use to taste.
For Serving
- Fresh Thyme Leaves – A delightful garnish that enhances flavor and visual appeal; add more according to your preference.
Step‑by‑Step Instructions for Cheesy Root Vegetable Gratin
Step 1: Preheat the Oven and Prepare the Dish
Preheat your oven to 400°F (200°C) and generously grease a 3-quart baking dish with softened unsalted butter. This will help the Cheesy Root Vegetable Gratin to bake evenly and prevent it from sticking. Set the prepared dish aside as we move on to the next step for this lovely gratin.
Step 2: Slice the Vegetables
Carefully slice the sweet potatoes, parsnips, and beets into very thin rounds, ideally using a mandoline for uniform thickness. Aim for slices that are about 1/8-inch thick to ensure even cooking. These vibrant layers will create a stunning visual appeal in your Cheesy Root Vegetable Gratin, so take your time with this step!
Step 3: Coat the Vegetables with Cream
In separate bowls, coat the sweet potato and parsnip rounds with 4 tablespoons of heavy cream each, while the beet slices should get 2 tablespoons. Add a portion of grated Parmesan and minced thyme to each bowl, seasoning generously with salt and pepper. Toss everything gently until well-combined to infuse those rich flavors throughout the vegetables.
Step 4: Prepare the Baking Dish
Pour ¼ cup of heavy cream into the bottom of your greased baking dish, spreading it evenly. Sprinkle with remaining grated Parmesan and add the minced garlic. This will create a flavorful base for your Cheesy Root Vegetable Gratin, enhancing each layer’s taste as it bakes.
Step 5: Layer the Vegetables
Begin layering the vegetables in the baking dish, standing them up vertically in lovely rows to create an aesthetic presentation. Alternate between sweet potatoes, parsnips, and beets, repeating the layering process until all vegetables are used up. This colorful arrangement makes your gratin not just tasty but visually appealing too!
Step 6: Season and Top with Parmesan
Once you’ve completed the layers, season the top with additional salt and pepper to enhance the flavors. Then, sprinkle the remaining grated Parmesan evenly over the vegetables. This layer will help form that irresistible, golden crust we all love on a Cheesy Root Vegetable Gratin.
Step 7: Bake Covered
Cover the baking dish tightly with foil and place it in the preheated oven. Bake for 30 minutes, allowing the vegetables to soften and meld flavors together. You’ll know it’s time to uncover when the kitchen fills with savory aromas, hinting at the delicious gratin coming together!
Step 8: Add Gruyère and Bake Uncovered
After 30 minutes, carefully remove the foil and sprinkle the shredded Gruyère cheese evenly over the top of the gratin. Return the dish to the oven and bake uncovered for an additional 18-20 minutes, or until the cheese is melted and beautifully golden brown. Keep an eye on it to achieve that perfect, bubbling crust.
Step 9: Garnish and Serve
Once baked to perfection, take the Cheesy Root Vegetable Gratin out of the oven and let it cool for a few minutes. Before serving, garnish with fresh thyme leaves to add a pop of color and flavor. Serve warm and enjoy this comforting dish that brings everyone together at the table!

Make Ahead Options
These Cheesy Root Vegetable Gratin are perfect for busy weeknights or holiday gatherings! You can prepare the entire dish up to 24 hours in advance by following the initial steps and layering the vegetables in the baking dish. Just cover it tightly with foil and refrigerate overnight. To maintain quality, ensure the beets are lightly coated in cream to prevent bleeding, and use fresh ingredients. When you’re ready to serve, simply preheat the oven to 400°F (200°C), and add 5-7 extra minutes to the baking time when cooking from the fridge. This way, you’ll enjoy a deliciously creamy gratin with minimal effort and maximum flavor!
Expert Tips for Cheesy Root Vegetable Gratin
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Choose Fresh Vegetables: Opt for fresh, vibrant root vegetables for the best flavor and texture. Older vegetables can be tough and lack taste, leading to a lackluster Cheesy Root Vegetable Gratin.
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Slice Evenly: Use a mandoline for uniform slicing. This ensures all vegetables cook evenly, preventing some layers from becoming mushy while others remain undercooked.
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Don’t Overcoat Beets: To prevent the beets from bleeding into other layers, coat them minimally with cream. Just a light touch is enough to preserve their color and flavor.
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Make-Ahead Magic: Prepare everything the day before and refrigerate it. Just remember to bake it for an extra 5-7 minutes if it’s coming from the fridge. This makes life easier during busy holiday gatherings!
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Experiment with Layers: Feel free to switch up the vegetable combinations based on what you have on hand. Carrots or turnips can add a new twist to your Cheesy Root Vegetable Gratin.
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Season Generously: Don’t skimp on salt and pepper, as they enhance the dish’s overall flavor. Taste the vegetable layers before baking to ensure they are well-seasoned!
Cheesy Root Vegetable Gratin Variations
Feel free to get creative and make this dish uniquely yours!
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Dairy-Free: Use coconut milk or cashew cream in place of heavy cream for a creamy, non-dairy version that’s just as delicious.
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Herb Boost: Incorporate fresh rosemary or sage into the vegetable mixture for an aromatic twist that elevates the dish’s flavor profile.
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Cheese Variety: Try mozzarella or cheddar instead of Gruyère for different flavor nuances—each will bring its own delightful richness.
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Extra Crunch: Top your gratin with panko breadcrumbs mixed with Parmesan for a satisfying crunch that contrasts beautifully with the creamy layers.
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Heat It Up: Add a pinch of cayenne pepper or red pepper flakes to the cream mixture for a gentle kick, perfect for those who love a bit of spice!
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Veggie Swap: Substitute root veggies with seasonal squash or zucchini for a refreshing twist while maintaining that comforting feel, much like my Cheesy Christmas Lasagna.
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Nutty Flavor: Toss in a handful of toasted walnuts or hazelnuts for a delightful nutty flavor that compliments the earthy vegetables beautifully.
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Smoky Finish: Drizzle some smoked olive oil over the top just before serving to add a smoky dimension—perfect for impressing your guests!
How to Store and Freeze Cheesy Root Vegetable Gratin
Fridge: Store leftover Cheesy Root Vegetable Gratin in an airtight container for up to 3 days. To reheat, place it in the oven at 350°F (175°C) for about 15-20 minutes until heated through.
Freezer: For longer storage, freeze your gratin in a tightly sealed container or freezer bag for up to 2 months. Thaw overnight in the fridge before reheating.
Covering: Ensure that the gratin is well-wrapped to prevent freezer burn, maintaining its delicious flavor and texture.
Reheating: To achieve the best texture when reheating from frozen, bake it in a preheated oven at 375°F (190°C) for 25-30 minutes, adding a bit of cream on top to restore moisture.
What to Serve with Cheesy Root Vegetable Gratin
The perfect meal deserves sides that elevate and enhance every bite, creating a warm and inviting atmosphere.
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Roasted Chicken: The savory spices and juicy texture of roasted chicken complement the creamy gratin beautifully, making for a harmonious culinary experience.
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Steamed Green Beans: Crisp and fresh, green beans add a vibrant crunch that contrasts wonderfully with the softness of the gratin.
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Garlic Bread: Adding a side of warm, buttery garlic bread provides a delightful way to soak up the cheesy goodness from the dish, making every bite indulgent.
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Wild Rice Salad: This nutty, earthy salad brings a lighter, refreshing element to balance the richness of the gratin, enhancing the overall experience.
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Cranberry Sauce: A dollop of tangy cranberry sauce adds a pop of acidity and sweetness, brightening up the dish and adding a festive note.
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Homemade Apple Pie: End your meal on a comforting note with a slice of warm apple pie, its cinnamon-spiced filling providing a perfect sweet contrast to the savory gratin.
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Red Wine: A smooth, fruity red wine will enhance the flavors of the veggies while adding a touch of sophistication to your dinner table.
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Butternut Squash Soup: Start your meal with a warming bowl of silky butternut squash soup that brings a hint of sweetness and cozy flavors, setting the tone for the feast ahead.

Cheesy Root Vegetable Gratin Recipe FAQs
How do I choose the best root vegetables for this gratin?
Absolutely! For the Cheesy Root Vegetable Gratin, look for root vegetables that are firm and free from dark spots or blemishes. Fresh, vibrant vegetables will ensure a flavorful dish. Sweet potatoes should be sweet and smooth, parsnips should feel heavy for their size without any soft areas, and beets should be small to medium-sized, firm, and brightly colored.
What is the best way to store leftover Cheesy Root Vegetable Gratin?
Very! To store your leftovers, let the gratin cool completely, then transfer it to an airtight container. It will keep well in the fridge for up to 3 days. When you’re ready to enjoy it again, pop it in the oven at 350°F (175°C) for about 15-20 minutes, making sure it’s nice and hot throughout.
Can I freeze the Cheesy Root Vegetable Gratin and how should I do it?
Absolutely! To freeze your gratin, allow it to cool down completely after baking. Next, wrap it well in plastic wrap or foil, and place it in an airtight container or a labeled freezer bag to prevent freezer burn. This way, you can store it for up to 2 months. When you’re ready to enjoy it, thaw it overnight in the fridge and then reheat in the oven at 375°F (190°C) for 25-30 minutes, adding a splash of cream on top to keep it moist.
My gratin didn’t brown on top. What should I do next time?
Don’t worry, this can happen sometimes! To achieve that golden, bubbly top next time, make sure you’re using enough grated cheese, especially Gruyère, as it melts beautifully. Also, consider increasing the uncovered baking time by a few extra minutes and if it’s still not browning, broil it for a minute or two—just keep a close eye on it to avoid burning.
Is this dish suitable for people with lactose intolerance or dietary restrictions?
Absolutely! You can make modifications for dietary preferences. For lactose intolerance, try using lactose-free heavy cream or a nut milk-based alternative. Additionally, if any guests have allergies, always check ingredients beforehand, and consider using vegan cheese as a substitute, maintaining a delicious flavor profile while ensuring everyone can enjoy it.
How can I reheat the gratin and maintain its texture?
Very! To reheat your Cheesy Root Vegetable Gratin, place it in a preheated oven at 350°F (175°C) for 15-20 minutes if refrigerated, or around 25-30 minutes if frozen. Gently covering it with foil will help keep it moist while it’s warming up. Feel free to drizzle a bit of cream or butter on top before reheating to restore some of that creamy texture.

Delicious Cheesy Root Vegetable Gratin for Cozy Gatherings
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C) and generously grease a 3-quart baking dish with softened unsalted butter. Set the prepared dish aside.
- Carefully slice the sweet potatoes, parsnips, and beets into very thin rounds, ideally using a mandoline for uniform thickness.
- In separate bowls, coat the sweet potato and parsnip rounds with 4 tablespoons of heavy cream each, and beet slices with 2 tablespoons. Add a portion of grated Parmesan and minced thyme to each bowl, mixing gently with salt and pepper.
- Pour ¼ cup of heavy cream into the greased baking dish, spreading it evenly. Sprinkle with remaining grated Parmesan and add the minced garlic.
- Layer the vegetables in the baking dish, standing them up vertically in rows, alternating between sweet potatoes, parsnips, and beets.
- Season the top with additional salt and pepper, then sprinkle the remaining grated Parmesan evenly over the vegetables.
- Cover the baking dish tightly with foil and bake for 30 minutes.
- Remove the foil, sprinkle the shredded Gruyère over the top, and bake uncovered for an additional 18-20 minutes, until the cheese is melted and golden brown.
- Let the gratin cool for a few minutes, garnish with fresh thyme leaves, and serve warm.

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