Root Vegetable Gratin is a delightful dish that transforms simple root vegetables into a creamy and cheesy masterpiece. This recipe combines sweet potatoes, beets, and parsnips layered with a rich garlic-thyme cream sauce and topped with melted cheese. Whether you’re preparing for a holiday feast or a cozy weeknight dinner, this dish is sure to impress. The vibrant colors and comforting flavors will make it a favorite at your table.
Why You’ll Love This Root Vegetable Gratin
This Root Vegetable Gratin is not just a dish; it’s an experience! Here are six reasons you’ll adore it:
- It’s a colorful addition to your table, making it perfect for special occasions like Thanksgiving.
- The creamy texture and cheesy top make it a true comfort food.
- It’s packed with nutrients from root vegetables, making it a healthy choice.
- Versatility allows you to use seasonal vegetables for a fresh take.
- Simple to prepare with an easy Vegetable Gratin Recipe format.
- Great as a Root Vegetable Casserole, perfect for leftovers!
As a Vegetarian Root Vegetable Gratin, it fits well into many diets while still being scrumptiously satisfying. It’s baked to perfection using the Baking method, ensuring a golden top that will leave everyone wanting more.
Ingredients for Root Vegetable Gratin
Gather these items:
- 4 long sweet potatoes, peeled and sliced 1/8-inch thick
- 6–8 small beets, peeled and sliced
- 1 large parsnip or carrot, peeled and sliced
- 1¼ cups heavy whipping cream
- 3 oz Parmesan cheese, divided
- 1 tsp dried thyme
- 1 garlic clove, minced
- 2 oz shredded Gruyere cheese
- Salt and pepper, to taste
How to Make Root Vegetable Gratin Step-by-Step
- Step 1: Preheat oven to 375°F (190°C). Lightly grease a 9×13 baking dish.
- Step 2: Peel and slice sweet potatoes, beets, and parsnip/carrot into thin 1/8-inch rounds.
- Step 3: Warm the heavy cream in a small saucepan with garlic, thyme, salt, and pepper for 3–4 minutes without boiling.
- Step 4: Layer sweet potatoes, then beets, then parsnips/carrot in the baking dish. Sprinkle some Parmesan between layers.
- Step 5: Repeat layers until all vegetables are used, ending with sweet potatoes.
- Step 6: Pour the warm cream mixture evenly over the dish.
- Step 7: Top with remaining Parmesan and shredded Gruyere.
- Step 8: Cover with foil and bake for 45 minutes.
- Step 9: Remove foil and bake 20–25 more minutes until golden, bubbling, and vegetables are tender.
- Step 10: Let rest 10 minutes before slicing and serving.
Pro Tips for the Perfect Root Vegetable Gratin
Keep these in mind:
- This dish works well as a side for holidays or weeknight dinners.
- Feel free to experiment with different root vegetables, such as turnips or rutabaga, for a twist.
- Ensure the vegetables are cut evenly for consistent cooking.
- For a crispy top, broil for a few minutes at the end of baking.
Best Ways to Serve Root Vegetable Gratin
This Baked Root Vegetables Dish can shine on its own, but here are some ideas to enhance your meal:
- Pair it with roasted meats or a hearty salad for a complete dinner.
- Serve alongside a warm crusty bread to soak up the creamy sauce.
- Consider adding a sprinkle of fresh herbs like parsley or chives for added flavor.
How to Store and Reheat Root Vegetable Gratin
To store your delicious gratin, simply cover it tightly with plastic wrap or aluminum foil and refrigerate. When ready to enjoy again, reheat it in the oven at 350°F (175°C) until warmed through. This dish is great for meal prep, making it a perfect choice for busy weekdays!
Frequently Asked Questions About Root Vegetable Gratin
What’s the secret to perfect Root Vegetable Gratin?
The key to a perfect Root Vegetable Au Gratin lies in the layering technique and ensuring even cooking of the vegetables. Thinly slicing them allows for even baking, while a rich cream sauce brings everything together beautifully.
Can I make Root Vegetable Gratin ahead of time?
Yes! You can prepare the gratin in advance and store it in the refrigerator. Just bake it before serving, adjusting the time as needed since it will be cold from the fridge.
How do I avoid common mistakes with Root Vegetable Gratin?
To avoid sogginess, make sure to slice the vegetables thinly and layer them properly. Also, ensure you don’t skip the resting period after baking; it helps the gratin to set up nicely.
Variations of Root Vegetable Gratin You Can Try
There are plenty of ways to mix up this classic dish. Consider these variations:
- Add different herbs like rosemary or sage for a fragrant twist.
- Incorporate different cheeses such as cheddar or feta for unique flavors.
- Use a mix of root vegetables such as carrots and turnips for seasonal variety.
With its creamy and cheesy layers, the Root Vegetable Gratin is not just a dish; it’s a celebration of flavors and colors, perfect for any occasion!

For more delicious recipes, check out Baked Pears with Feta and Honey or Creamy Garlic Crab Stuffed.

For more information on the health benefits of root vegetables, visit Healthline.
Print
Root Vegetable Gratin: 10 Amazing Comfort Food Recipes
- Total Time: 1 hour 20 minutes
- Yield: 6 servings 1x
- Diet: Vegetarian
Description
This Creamy Root Vegetable Gratin combines sweet potatoes, beets, and parsnips layered with a garlic-thyme cream sauce and melted Parmesan and Gruyere.
Ingredients
- 4 long sweet potatoes, peeled and sliced 1/8-inch thick
- 6–8 small beets, peeled and sliced
- 1 large parsnip or carrot, peeled and sliced
- 1¼ cups heavy whipping cream
- 3 oz Parmesan cheese, divided
- 1 tsp dried thyme
- 1 garlic clove, minced
- 2 oz shredded Gruyere cheese
- Salt and pepper, to taste
Instructions
- Preheat oven to 375°F (190°C). Lightly grease a 9×13 baking dish.
- Peel and slice sweet potatoes, beets, and parsnip/carrot into thin 1/8-inch rounds.
- Warm the heavy cream in a small saucepan with garlic, thyme, salt, and pepper for 3–4 minutes without boiling.
- Layer sweet potatoes, then beets, then parsnips/carrot in the baking dish. Sprinkle some Parmesan between layers.
- Repeat layers until all vegetables are used, ending with sweet potatoes.
- Pour the warm cream mixture evenly over the dish.
- Top with remaining Parmesan and shredded Gruyere.
- Cover with foil and bake for 45 minutes.
- Remove foil and bake 20–25 more minutes until golden, bubbling, and vegetables are tender.
- Let rest 10 minutes before slicing and serving.
Notes
- This dish works well as a side for holidays or weeknight dinners.
- Feel free to experiment with different root vegetables.
- Prep Time: 20 minutes
- Cook Time: 1 hour
- Category: Side Dish
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 300
- Sugar: 5g
- Sodium: 350mg
- Fat: 20g
- Saturated Fat: 10g
- Unsaturated Fat: 5g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 4g
- Protein: 8g
- Cholesterol: 40mg
