The aroma of roasted root vegetables wafting through the kitchen instantly transports me back to joyful holiday gatherings and cozy family dinners. This Cheesy Root Vegetable Gratin is not just a dish; it’s a celebration of flavors that comes together effortlessly. Imagine layers upon layers of sweet potatoes, beets, and parsnips, mingling in rich cream and garlic, all culminating in a bubbling masterpiece that looks as good as it tastes. This vegetarian delight isn’t just a showstopper; it’s the epitome of comfort food that’s quick to prep, making it the perfect side dish for your next holiday feast or a delicious way to elevate a quiet weeknight dinner. Are you ready to dive into this vibrant culinary adventure?

Why Is Root Vegetable Gratin Irresistible?
Comforting, earthy flavors: This dish combines sweet potatoes, beets, and parsnips for a taste sensation that warms the soul.
Show-stopping presentation: Layers of vibrant vegetables create a feast for the eyes, making it perfect for holiday gatherings.
Easy preparation: With simple steps and minimal fuss, you’ll have a beautiful side dish ready in no time.
Versatile ingredient swaps: Feel free to mix in seasonal veggies or different cheeses for your unique twist—try it with Cheesy Mashed Potato for an extra creamy side!
Crowd favorite: Its rich, cheesy goodness is sure to impress family and friends at your next festive dinner.
Elevate your mealtime and indulge in this incredible Cheesy Root Vegetable Gratin that’s sure to be the star!
Cheesy Root Vegetable Gratin Ingredients
For the Gratin
- Unsalted Butter – Adds richness and helps to grease the baking dish; use softened butter for easy application.
- Sweet Potatoes – Provide natural sweetness and a creamy texture; can substitute with regular potatoes if desired.
- Parsnips – Contribute a sweet, nutty flavor essential for depth; regular potatoes may also work in a pinch.
- Beets – Bring color and an earthy sweetness; ensure they are peeled to avoid a bitter taste.
- Heavy Cream – Gives a luxurious mouthfeel; can substitute with whole milk, but the gratin will be less creamy.
- Parmesan Cheese – Offers salty, umami flavors enhancing richness; divide between layers for the best taste.
- Fresh Thyme – Imparts a fragrant herbal note that beautifully complements root vegetables; reserve extra for garnish.
- Garlic – Provides aromatic flavor to elevate the cream and overall taste.
- Shredded Gruyère – Melts beautifully, adding nutty flavor; this is an essential layer for a delightful finish.
- Salt and Pepper – Essential seasonings to enhance flavors to taste.
For Garnish
- Additional Fresh Thyme – Use this vibrant herb for a lovely finishing touch.
This Cheesy Root Vegetable Gratin is an incredible way to enjoy much-loved root veggies wrapped in creamy goodness, perfect for any holiday table!
Step‑by‑Step Instructions for Cheesy Root Vegetable Gratin
Step 1: Preheat and Prepare the Dish
Begin by preheating your oven to 400°F (200°C). While the oven warms up, take a 3-quart baking dish and generously grease it with softened unsalted butter, ensuring every corner is coated to prevent sticking. The butter will enable the delicious gratin to slide out beautifully once baked.
Step 2: Slice the Vegetables
Using a sharp knife or mandoline, thinly slice the sweet potatoes, parsnips, and beets into uniform pieces, approximately 1/8 inch thick. This ensures even cooking and a lovely presentation in your Cheesy Root Vegetable Gratin. Gather your sliced vegetables and keep them ready for the next step.
Step 3: Mix with Cream and Seasonings
In a large mixing bowl, toss the sliced sweet potatoes and parsnips with 4 tablespoons of heavy cream each, adding 2 tablespoons for the beets. Stir in grated Parmesan cheese and fresh thyme, and season the mixture generously with salt and pepper. This creamy blend will enhance the flavor of your root vegetables.
Step 4: Create the Base Layer
Pour 1/4 cup of cream into the bottom of the greased baking dish, ensuring an even spread. Sprinkle minced garlic and a generous layer of Parmesan on top of the cream. This base will infuse delicious flavor into the vegetables as they bake, setting the stage for the Cheesy Root Vegetable Gratin.
Step 5: Layer the Vegetables
Begin standing the sweet potato slices vertically at one end of the dish, then follow with the parsnips and beets in similar layers. Continue to alternate the vegetables until all are arranged artistically in the dish. Each layer will contribute to the beautiful presentation and rich flavors of the gratin.
Step 6: Final Seasoning and Cheese
Sprinkle the top layer with remaining salt, pepper, and an additional generous amount of Parmesan cheese. This will help form a beautiful golden crust while baking. The extra cheese will also enhance the overall richness of your Cheesy Root Vegetable Gratin, giving it that irresistible cheesy appeal.
Step 7: Bake Covered
Now, cover the baking dish tightly with aluminum foil, ensuring a good seal to retain moisture. Place it in the preheated oven and bake for 30 minutes. This initial baking will allow the vegetables to become tender, setting the foundation for the final layer of cheesy goodness.
Step 8: Add Gruyère and Bake Uncovered
After 30 minutes, carefully remove the foil and sprinkle a generous amount of shredded Gruyère cheese evenly over the top. Return the dish to the oven and bake for an additional 18–20 minutes, or until the cheese is bubbly and has turned a beautiful golden color, creating a mouthwatering finish to your Cheesy Root Vegetable Gratin.
Step 9: Garnish Before Serving
Once baked, remove the gratin from the oven and let it rest for a few minutes. Before serving, garnish with fresh thyme sprigs for a pop of color and fresh aroma that complements the dish. This final touch will make your Cheesy Root Vegetable Gratin not only delicious but also visually stunning for your holiday table.

Make Ahead Options
These Cheesy Root Vegetable Gratins are perfect for busy home cooks looking to save time during the holiday rush! You can prepare the entire dish up to 24 hours in advance by assembling it and storing it tightly wrapped in the refrigerator. To maintain quality, ensure the beets are well-coated in cream to minimize color changes. When you’re ready to serve, simply uncover and bake it straight from the fridge, adding an extra 5-10 minutes to the baking time to ensure everything is heated through. This way, you can enjoy a delicious and comforting dish without the last-minute hustle, making your holiday gatherings more enjoyable!
Tips for the Best Cheesy Root Vegetable Gratin
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Uniform Slices: Ensure even cooking by using a mandoline for slicing your root vegetables. This prevents some pieces from being undercooked while others are overdone.
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Prevent Beet Bleeding: Limit the beets’ exposure to cream before baking to avoid them bleeding into other layers. This preserves their vibrant color without muddling the dish.
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Make Ahead: Consider preparing the Cheesy Root Vegetable Gratin a day in advance. Just cover tightly with foil and store in the refrigerator. Note that beets may change color slightly due to the cream.
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Cheese Layers: Don’t skimp on dividing the Parmesan cheese between layers. This enhances the overall flavor and keeps the gratin rich and cheesy throughout.
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Garnish Awesomely: Fresh thyme adds a beautiful herbal aroma and elevates the dish visually. Make sure to garnish right before serving for that fresh touch!
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. Ensure it’s cooled completely before sealing to maintain freshness.
Freezer: If you need to freeze it, wrap the gratin tightly in plastic wrap and then in foil. It can be frozen for up to 2 months.
Reheating: For the best texture, reheat in the oven at 350°F (175°C) until warmed through, about 20-25 minutes. Avoid microwaving, as it can make the dish soggy.
Make-Ahead: This gratin can be prepared a day in advance. Store it wrapped tightly in foil in the fridge, but expect slight color changes in the beets over time.
What to Serve with Cheesy Root Vegetable Gratin
Imagine the warmth of a hearty meal, where your table is adorned with vibrant colors and comforting flavors that dance on your palate.
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Savory Roasted Chicken: This succulent dish pairs wonderfully, enhancing the creamy richness of the gratin with juicy, flavorful bites. The combination is simply irresistible for your next holiday gathering.
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Fresh Arugula Salad: The peppery notes of arugula offer a refreshing contrast, cutting through the richness while adding a crisp texture to each bite. Toss in some lemon vinaigrette for extra zing!
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Balsamic Glazed Brussels Sprouts: With their earthy flavor and slight sweetness, these sprouts offer a delightful balance to the indulgent gratin, creating a harmonious dining experience.
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Garlic Breadsticks: Perfect for sopping up the creamy goodness, these soft, buttery sticks add a fun and comforting element to your meal, making every bite unforgettable.
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Cranberry Sauce: The tartness of cranberry sauce brightens up the plate and complements the sweetness of the root vegetables, adding a seasonal twist that enhances your holiday feast.
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Champagne or Sparkling Wine: A glass of bubbly elevates the occasion, its effervescence cutting through the richness of the gratin and adding festive cheer to your gathering.
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Pumpkin Pie: For dessert, a slice of spiced pumpkin pie brings a beautiful finish to the meal, creating a delightful journey of flavors that lingers long after the last bite.
Indulge in these thoughtful pairings for your Cheesy Root Vegetable Gratin, and watch as your meal transforms into a heartwarming celebration!
Cheesy Root Vegetable Gratin Variations
Feel free to get creative and make this Cheesy Root Vegetable Gratin your own with these tasty twists!
- Gluten-Free: Substitute heavy cream with a gluten-free dairy alternative like almond milk for a lighter version.
- Dairy-Free: Use coconut milk or cashew cream in place of heavy cream and omit cheese for a vegan delight.
- Cheese Lovers: Mix in ricotta or feta for a creamy texture and additional flavor depth, enhancing your dish immensely.
- Herb Infusion: Add sage or rosemary for a fragrant herbal note that elevates the deliciousness of the gratin. You’ll find a perfectly balanced taste between earthy roots and aromatic herbs.
- Extra Crunch: Top with crushed potato chips or bread crumbs for a delightful and unexpected crispy layer that adds additional texture.
- Spicy Kick: Sprinkle in some red pepper flakes or diced jalapeños to heat things up, crafting a unique take on this classic dish.
- Seasonal Veggies: Swap beets or parsnips for seasonal vegetables like carrots or butternut squash, inviting new flavors into your culinary masterpiece.
- Cheesy Mash-up: For a comforting twist, consider combining this gratin with a creamy Cheesy Mashed Potato recipe to create an unforgettable layered side dish perfect for holidays!
Explore these variations and enjoy bringing your personal touch to this captivating Cheesy Root Vegetable Gratin!

Cheesy Root Vegetable Gratin Recipe FAQs
What is the best way to choose root vegetables for the gratin?
Absolutely! When selecting root vegetables, aim for firm and smooth textures. Look for sweet potatoes without dark spots or blemishes, and avoid beets with soft or wrinkled skins. For parsnips, ensure they’re plump and white or cream-colored, as those are generally sweeter and more flavorful.
How do I store leftover Cheesy Root Vegetable Gratin?
Very! Leftover gratin can be stored in an airtight container in the refrigerator for up to 3 days. Be sure to let it cool completely before sealing to prevent moisture buildup. Reheating in the oven at 350°F (175°C) for about 20-25 minutes will ensure it retains its delicious texture.
Can I freeze Cheesy Root Vegetable Gratin?
Absolutely! To freeze, wrap the gratin tightly in plastic wrap, followed by a layer of aluminum foil. This helps prevent freezer burn and can extend its shelf life for up to 2 months. When you’re ready to enjoy it again, thaw overnight in the refrigerator, then reheat it in the oven for the best results.
How can I prevent the beets from bleeding into the dish?
Certainly! To avoid beets bleeding into the dish and changing its colors, limit their exposure to cream before layering. Cut and mix them separately, and when arranging in the baking dish, ensure they are fully coated with cream before adding layers above. This method helps maintain their vibrant color.
Is there a vegetarian alternative for the heavy cream?
Definitely! If you prefer a dairy-free option, you can substitute heavy cream with full-fat coconut milk or a plant-based cream alternative, which can provide a similar rich texture. However, keep in mind that this may alter the flavor slightly, but it will still produce a delightful gratin.
Can I make Cheesy Root Vegetable Gratin ahead of time?
Absolutely! You can prepare the gratin a day in advance. Simply assemble it as instructed, cover it tightly with foil, and store it in the refrigerator. Just be aware that the beets may change color slightly due to the cream, but it will still taste fantastic!

Cheesy Root Vegetable Gratin for Cozy Holiday Feasts
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C) and grease a 3-quart baking dish with softened unsalted butter.
- Thinly slice the sweet potatoes, parsnips, and beets into uniform pieces, approximately 1/8 inch thick.
- Toss the sliced sweet potatoes and parsnips with 4 tablespoons of heavy cream each and 2 tablespoons for the beets. Add grated Parmesan cheese and fresh thyme; season.
- Pour 1/4 cup of cream into the bottom of the baking dish, sprinkle minced garlic and Parmesan on top.
- Layer the sweet potato slices, followed by parsnips and beets until all are artistically arranged.
- Sprinkle the top layer with remaining salt, pepper, and additional Parmesan cheese.
- Cover the baking dish with aluminum foil and bake for 30 minutes.
- Remove the foil, sprinkle shredded Gruyère cheese, and bake uncovered for an additional 18-20 minutes.
- Let the gratin rest for a few minutes before garnishing with fresh thyme and serving.

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