A soft, golden crust, rich with cheesy goodness, emerges from the oven, filling the kitchen with a warm and inviting aroma that beckons you closer. This Cheesy Root Vegetable Gratin for Fall brings together the vibrant colors and flavors of sweet potatoes, earthy beets, and sweet parsnips, transforming humble ingredients into a stunning centerpiece for your holiday table. It’s not just another side dish; it’s the perfect combination of comfort and festivity, offering a hearty, vegetarian option that your family and friends will adore. Better yet, this make-ahead recipe lets you savor every moment with loved ones instead of being tethered to the stove. Are you ready to elevate your fall gatherings with this delicious gratin? Let’s dive into the recipe!

Why Is This Gratin a Fall Favorite?
Rich, Cheesy Layers: Each slice is loaded with irresistible cheese and a creamy texture that pairs perfectly with the natural sweetness of root vegetables.
Colorful Presentation: The vibrant hues of sweet potatoes, beets, and parsnips create a visually stunning dish that’s sure to impress your guests.
Make-Ahead Convenience: Prepare this dish in advance and simply pop it in the oven when it’s time to eat, allowing you to relax with your loved ones.
Versatile Dish: This gratin serves as a fantastic side for holiday meals or as a hearty vegetarian main, matching well with roasted meats or a crisp salad.
Comforting and Satisfying: The warm, inviting flavors make it the ultimate comfort food to enjoy during chilly fall evenings, perfect for cozy gatherings.
With options to customize, like adding a crunchy topping or swapping root veggies, you can truly make this gratin your own!
Cheesy Root Vegetable Gratin Ingredients
For the Gratin
- Unsalted Butter – Essential for greasing the baking dish; swap with olive oil for a dairy-free version.
- Sweet Potatoes – Adds natural sweetness and hearty structure; roughly 1-2 large, peeled, and cut into 2-inch thick rounds.
- Parsnips – Contributes sweetness and earthy flavor; use 3-4 large, trimmed and peeled.
- Beets – Imparts vibrant color and earthy taste; select 3-5 small, peeled.
- Heavy Cream – Provides richness and creaminess crucial for a luscious gratin; a total of 14 tablespoons, divided.
- Grated Parmesan – Adds savory depth and helps bind the gratin; use 4 ounces, divided throughout.
- Fresh Minced Thyme – Introduces fresh herbal notes; approximately 1 tablespoon, divided, plus extra for garnish.
- Garlic Clove – Enhances the overall flavor; include 1 clove, minced.
- Shredded Gruyère – Melts beautifully for a creamy, golden topping; use about 1 ounce.
- Salt and Pepper – Essential for seasoning each layer; add to taste.
For the Topping
- Panko Breadcrumbs – Adds a crunchy texture on top; mix with olive oil for extra flavor.
This Cheesy Root Vegetable Gratin is a fantastic way to celebrate the flavors of fall, making it a perfect addition to your holiday table!
Step‑by‑Step Instructions for Cheesy Root Vegetable Gratin for Fall
Step 1: Preheat and Prepare
Begin by preheating your oven to 400°F (200°C). While it warms up, grab a 3-quart baking dish and generously grease it with unsalted butter. This step ensures that your Cheesy Root Vegetable Gratin for Fall doesn’t stick and gives it a beautiful golden crust later on.
Step 2: Slice the Vegetables
Using a mandoline or a sharp knife, carefully slice the sweet potatoes, parsnips, and beets into very thin rounds, aiming for uniformity. This helps them cook evenly. Place each vegetable into separate bowls to avoid any color bleeding, which is especially important with the beets!
Step 3: Coat the Root Vegetables
In their respective bowls, pour 4 tablespoons of heavy cream over the sweet potatoes and parsnips, mixing each with ½ ounce of Parmesan cheese and 1 teaspoon of thyme. For the beets, blend with 2 tablespoons of cream, the remaining Parmesan, and season with salt and pepper. This layering of flavors is crucial for your gratin.
Step 4: Begin Layering
Pour ¼ cup of heavy cream into the greased baking dish and sprinkle with ½ ounce of Parmesan cheese. Add the minced garlic at the bottom for an aromatic kick! Now you’re ready to layer: start with a layer of sweet potato slices, followed by parsnips and then beet slices, repeating until all vegetables are used.
Step 5: Season and Cover
Sprinkle salt and pepper over the top layer of the assembled gratin, followed by the remaining Parmesan cheese. Cover the dish tightly with aluminum foil to lock in moisture, and bake in your preheated oven for 30 minutes, allowing the vegetables to soften beautifully.
Step 6: Add Final Touches
After 30 minutes, carefully remove the foil to reveal the slightly bubbling gratin. Top with shredded Gruyère cheese, which will melt into a deliciously creamy layer. Bake uncovered for an additional 18-20 minutes, keeping an eye on it until the cheese is melted and has turned a lovely golden brown.
Step 7: Garnish and Serve
Once out of the oven, let your Cheesy Root Vegetable Gratin rest for a few moments to settle, making slicing easier. Garnish with fresh thyme sprigs for a pop of color and an aromatic touch before serving. This gratin is not only a feast for the eyes but also a warm embrace on a chilly fall evening.

Make Ahead Options
These Cheesy Root Vegetable Gratin are perfect for busy cooks who love to meal prep! You can slice and layer the vegetables, then assemble the gratin up to 24 hours in advance. Simply cover tightly with plastic wrap and refrigerate; this keeps the flavors vibrant and the textures lovely. When you’re ready to serve, bake it directly from the fridge, adding an extra 5-7 minutes to the cooking time if needed. To maintain that delicious creamy consistency, be sure to cover it with foil during the first part of baking. This way, you’ll enjoy amazing comfort food with minimal effort, allowing you to spend more time with family and friends!
What to Serve with Cheesy Root Vegetable Gratin
A delightful fall dinner is incomplete without the perfect accompaniments to elevate your cheesy masterpiece.
- Herb-Roasted Chicken: Juicy, tender chicken seasoned with savory herbs complements the rich, creamy gratin beautifully.
- Crisp Green Salad: A refreshing mix of greens with a tangy vinaigrette adds a bright contrast to the gratin’s richness.
- Savory Stuffed Mushrooms: These bite-sized delights packed with herbs, cheese, and breadcrumbs offer a delightful crunch alongside the soft gratin.
- Maple-Glazed Carrots: Sweet roasted carrots bring a touch of natural sweetness, enhancing the earthy flavors of the root vegetables.
- Sautéed Garlic Spinach: Wilted spinach infused with garlic provides a vibrant pop of color and a nutritious addition to your plate.
- Sparkling Apple Cider: The effervescence and mild sweetness of this drink pair exquisitely with the savory layers of your cheesy root vegetable gratin.
- Pumpkin Pie: End your meal on a sweet note with a classic autumn dessert that complements the seasonal flavors of the main dish.
Cheesy Root Vegetable Gratin Variations
Customize your Cheesy Root Vegetable Gratin with these delightful twists to elevate its flavors and textures even further.
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Root Swap: Replace beets with carrots or turnips for a sweet, earthy variation. Each alternative will uniquely enhance the dish’s taste profile.
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Dairy-Free Delight: Use coconut cream instead of heavy cream and opt for dairy-free cheese to keep this dish cozy for everyone at the table. Your vegan friends will appreciate it!
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Add Some Spice: Sprinkle in red pepper flakes or a dash of cayenne pepper for those who like a little kick. A gentle heat can transform the gratin into a true delight!
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Herb Variations: Swap out thyme for fresh rosemary or sage for an aromatic twist that breathes new life into your dish. It’s a simple change that adds depth to those cheesy layers.
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Crunchy Topping: Introduce a crispy topping by mixing panko breadcrumbs with olive oil, parmesan, or herbs for an extra texture that contrasts beautifully with the creamy gratin. Just imagine that satisfying crunch with every slice!
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Cheesy Layering: Experiment with different cheeses! Blend Gruyère with sharp cheddar or feta for unexpected flavor notes, creating a melty, cheesy dream.
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Nutty Flavor: Add a handful of toasted nuts like walnuts or hazelnuts for a delightful earthy crunch. The nuttiness will complement the sweetness of the root vegetables perfectly.
As you explore these variations, don’t forget to check out our other cheesy recipes, like these mouthwatering Ooey Gooey Cheesy Garlic Chicken Wraps or the comforting Cheesy Taco Potatoes. There’s a whole world of cheesy goodness waiting for you!
How to Store and Freeze Cheesy Root Vegetable Gratin
Fridge: Store leftovers in an airtight container for up to 3 days. Reheat individual portions in the microwave or oven until warmed through for the best flavor and texture.
Freezer: For longer storage, freeze the gratin in an airtight container for up to 2 months. Thaw overnight in the fridge before reheating to preserve its creamy consistency.
Reheating: To reheat, place in a preheated oven at 350°F (175°C) for about 20-25 minutes, covered with foil to avoid drying out, until heated through. Enjoy the luscious Cheesy Root Vegetable Gratin just as you did when it was fresh!
Expert Tips for Cheesy Root Vegetable Gratin
Even Slices Matter: Ensure all vegetables are sliced evenly for uniform cooking. Thick or uneven sections may lead to some layers being overcooked or undercooked.
Beet Care: To preserve the vibrant color of beets, coat the slices lightly with cream before layering. This prevents color bleeding into other vegetables.
Resting Time: Let the gratin rest for about 10 minutes after baking. This allows the layers to settle, making it easier to slice and serve without falling apart.
Make Ahead Convenience: If preparing in advance, refrigerate the covered dish. Plan for an additional 5-7 minutes of baking time if coming straight from the fridge.
Taste as You Go: Don’t forget to season each layer with salt and pepper. This ensures that every bite of your Cheesy Root Vegetable Gratin is flavorful and delicious.
Cheese Options: Feel free to experiment with different cheese blends. Gruyère is fantastic, but mixing in some cheddar or feta can add interesting flavors while keeping the gratin creamy.

Cheesy Root Vegetable Gratin Recipe FAQs
What kind of sweet potatoes should I use?
Absolutely! It’s best to choose medium to large sweet potatoes that are firm and without blemishes. Look for those with smooth, unwrinkled skin and avoid any with dark spots or soft areas, as these indicate overripeness.
How should I store leftovers?
For optimal freshness, store any leftover Cheesy Root Vegetable Gratin in an airtight container in the refrigerator for up to 3 days. If you want to enjoy it later, freezing is a fantastic option! Just remember to wrap it tightly or transfer to a freezer-safe container to avoid freezer burn.
Can I freeze the gratin? If so, how?
The more the merrier when it comes to make-aheads! Yes, you can freeze the gratin! After baking and cooling, slice it into portions and wrap each piece in plastic wrap, then place them in a freezer-safe bag or container. It will keep well for up to 2 months. When you’re ready to enjoy it, simply thaw overnight in the fridge and reheat in a 350°F (175°C) oven for 20-25 minutes until warmed through and creamy again.
What if my beets bleed into other layers?
Very common indeed! If you find that your beets bleed into the layers, here’s a tip: coat the slices lightly with heavy cream before layering. This creates a barrier that minimizes color migration. If it does happen, don’t worry, it will still taste amazing!
Is this recipe suitable for people with dairy allergies?
Good question! While the traditional recipe includes heavy cream and cheese, you can easily make this Cheesy Root Vegetable Gratin dairy-free. Use coconut cream as a substitute for heavy cream and opt for dairy-free cheese for that melty goodness. Your guests will appreciate the thoughtful accommodation!
Do I need to let the gratin rest after baking?
Absolutely! Allowing the gratin to rest for about 10 minutes after baking is crucial. This resting period allows the layers to set, making it easier to slice and serve without falling apart, ensuring every scoop is perfect. Enjoy your cozy gratin!

Cheesy Root Vegetable Gratin for Fall: Cozy Up to Comfort Food
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C) and grease a 3-quart baking dish with unsalted butter.
- Slice the sweet potatoes, parsnips, and beets into very thin rounds and place in separate bowls.
- Coat sweet potatoes and parsnips with 4 tablespoons of heavy cream, mix with ½ ounce of Parmesan and 1 teaspoon of thyme. For beets, blend with 2 tablespoons of cream, remaining Parmesan, salt, and pepper.
- Pour ¼ cup of heavy cream into the baking dish, sprinkle with ½ ounce of Parmesan, and add minced garlic. Layer sweet potato, parsnip, and beet slices, repeating until all are used.
- Sprinkle the top layer with salt, pepper, and remaining Parmesan cheese. Cover with aluminum foil and bake for 30 minutes.
- Remove the foil, top with shredded Gruyère cheese, and bake uncovered for an additional 18-20 minutes or until golden brown.
- Let the gratin rest for 10 minutes, garnish with fresh thyme, and serve.

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