Introduction to Butternut Squash Gratin
What is Butternut Squash Gratin and Why is it a Must-Try?
If you’re looking to impress at your next dinner gathering or simply want a comforting dish on a cozy night in, butternut squash gratin is the perfect choice. This rich, creamy, and cheesy variation of the classic gratin uses roasted butternut squash as a sweet base, harmoniously combined with fragrant herbs and an irresistible cheese blend.
What makes this dish so unique is its versatility. Whether you're serving it as a side dish during holiday festivities or as a hearty vegetarian main course, butternut squash gratin can easily fit into any meal. The natural sweetness of the squash pairs beautifully with the savory notes of thyme and sage, creating layers of flavor that your guests won’t forget.
Moreover, butternut squash is a nutritional powerhouse. Packed with vitamins A, C, and E, it promotes eye health and boosts your immune system (Harvard Health). Plus, its velvety texture adds richness without overwhelming heaviness. Ready to elevate your culinary game? Grab some squash, and let’s dive into this delightful recipe! For more inspiration on seasonal vegetables, check out Love & Lemons for additional links on where to source local ingredients.

Ingredients for Butternut Squash Gratin
Essential ingredients you'll need
To create a delicious butternut squash gratin, you'll want to gather some key ingredients that embody rich flavors and creamy textures. Here’s what you’ll need:
- 2 ½ pounds of butternut squash, cut into 1½-inch pieces
- 2 tablespoons of extra-virgin olive oil
- 1 ½ teaspoons of kosher salt
- 4 tablespoons (½ stick) of salted butter
- 2 large shallots, chopped
- 2 garlic cloves, minced
- 2 tablespoons of chopped fresh sage
- 2 teaspoons of fresh thyme leaves
- 1 cup of heavy cream
- ¼ teaspoon of ground nutmeg
- 1 ½ cups of freshly grated Gruyère cheese
- 1 cup of freshly grated Parmesan cheese
- Freshly cracked black pepper and fresh sage leaves for serving
Optional ingredients for added flair
If you’re looking to elevate your butternut squash gratin, consider adding a few optional ingredients that can enhance its flavor profile:
- 1 cup of Turkey Bacon or Chicken Ham for a savory twist.
- A sprinkle of panko breadcrumbs on top for a crispy finish.
- A dash of cayenne pepper or red pepper flakes to give it a hint of spice.
These additions can help you create a gratin that truly reflects your culinary style. To explore more ways to indulge your foodie instincts, check out this great guide on different cheese pairings!
Step-by-Step Preparation of Butternut Squash Gratin
Preheat your oven
The first step in creating your butternut squash gratin is to set the stage. Preheat your oven to 400°F (200°C) with a rack positioned in the center. This ensures even cooking and perfect texture for your squash and cheese sauce. By warming up the oven now, you'll save some time later!
Prepare the butternut squash
Next up, it's time to tackle that beautiful butternut squash. Cut it into 1½-inch pieces for even cooking and optimal tenderness. Place the squash into an 8 x 8-inch or 7 x 10-inch baking dish, and drizzle it with 1 tablespoon of extra-virgin olive oil along with 1 teaspoon of kosher salt. This simple mix is crucial for flavor! Toss the pieces well until they’re coated, then arrange them in a single layer. Bake this delicious base in the preheated oven for about 25 minutes. You want that squash to soften slightly and start to caramelize; it will add that lovely depth of flavor later. If you’re unsure about the roasting process, here are some tips on roasting vegetables which are always handy!
Create the delicious cheese sauce
As the squash starts to roast, let's whip up a cheese sauce that will make your butternut squash gratin sing! In a large skillet, heat 4 tablespoons of salted butter along with the remaining 1 tablespoon of olive oil over medium heat. Once the butter has melted, toss in 2 chopped shallots and sauté until softened and fragrant, around 4 minutes. Next, stir in 2 minced garlic cloves, 2 tablespoons of chopped fresh sage, and 2 teaspoons of fresh thyme leaves. The aroma will be irresistible!
Pour in 1 cup of heavy cream, and season with ¼ teaspoon of ground nutmeg and the remaining ½ teaspoon of salt. As this simmers and steams for about 5 minutes, you can enjoy the delightful fragrance filling your kitchen. Finally, stir in 1½ cups of freshly grated Gruyère cheese and 1 cup of Parmesan cheese, reducing the heat to low, and continue to stir until everything is melty and creamy—about 5 minutes.
Combine and bake the gratin
Once your squash is out of the oven, pour that luscious cheese sauce over the top. You can almost hear it bubbling with excitement! Give it a gentle toss to distribute the flavors, and return the dish to the oven. Bake for an additional 20 minutes, allowing the sauce to thicken and the squash to become even more tender.
Final touches and serving
After baking, let your butternut squash gratin cool for about 5 minutes. This short wait will help the flavors meld together beautifully. Just before serving, sprinkle freshly cracked black pepper and a few fresh sage leaves on top for that perfect finishing touch.
Can you imagine the warmth and joy this dish will bring to your table? Serve it up as a delightful side or even as a main destination of its own! By the way, if you're curious about variations, feel free to check out more here. Enjoy!

Variations on Butternut Squash Gratin
Adding spices for a kick
Want to elevate your butternut squash gratin? Consider adding spices like cayenne pepper or smoked paprika. These will not only enhance the flavors but also add a delightful warmth. A dash of cumin can introduce a more earthy note, marrying beautifully with the sweetness of the squash.
Incorporating different cheeses
Cheese lovers, rejoice! While Gruyère and Parmesan are classics, you can experiment with other varieties. Think about bold flavors like blue cheese for a tangy twist, or creamy mozzarella for a milder taste. Mixing different cheeses can create a symphony of flavors that makes your gratin truly unique.
Vegetarian or vegan adaptations
Whether you’re hosting a vegetarian dinner or accommodating vegan guests, adaptations are easy. For a vegetarian version, simply substitute the cream for a rich plant-based alternative, like coconut cream or cashew cream. If you're going vegan, swap out the cheeses for nutritional yeast and use vegan butter. This way, your butternut squash gratin remains delicious and inclusive for everyone at the table!
Want more customization ideas? Check out resources on Cooking with Seasonal Vegetables for inspiration!
Cooking Tips and Notes for Butternut Squash Gratin
Troubleshooting Common Issues
Butternut squash gratin can be a showstopper, but sometimes things don’t go as planned. If your gratin is too watery, it may be due to excess moisture from the squash; try patting the pieces dry before roasting. If the cheese sauce is lumpy, ensure you’re stirring consistently while melting the cheese—this helps achieve that creamy texture we all love. Lastly, if it browns too quickly, simply cover with foil until the end.
Storage and Reheating Tips
This delectable dish can be made ahead! Store in the refrigerator for up to 3 days. When it's time to enjoy, reheat in a 350°F oven until warmed through, about 20 minutes. To maintain that creamy texture, adding a splash of cream before reheating can work wonders. Curious about more make-ahead dishes? Check out this guide.

Serving Suggestions for Butternut Squash Gratin
What to Pair with Your Gratin
The butternut squash gratin is versatile and pairs beautifully with a variety of dishes. Consider serving it alongside:
- Roasted chicken or chicken ham for a savory complement
- Grilled steak or beef for a heartier meal
- A fresh arugula salad drizzled with lemon vinaigrette to balance the creaminess
- Cooked quinoa or wild rice for a wholesome grain option
You can also explore incredibly tasty sides like sautéed green beans or garlic mashed potatoes, giving your plate a vibrant, seasonal flair.
Ideal Occasions for Serving
This gratin makes an excellent centerpiece for family gatherings, holiday dinners, or casual weeknight meals. It’s a crowd-pleaser for Thanksgiving or Friendsgiving, bringing warmth and richness to your table. Why not whip it up for a cozy fall weekend dinner? It’s perfect for those chilly evenings when you need comfort food!
For more tips on pairing sides, check out The Spruce Eats for creative combination ideas.
Time Breakdown for Butternut Squash Gratin
Preparation time
You’ll need about 15 minutes to prep your ingredients, including peeling and chopping the butternut squash and preparing the flavorful aromatics.
Cooking time
The cooking process takes around 50 minutes in total—that's 25 minutes for roasting the squash and an additional 25 minutes for baking everything together, allowing those delicious flavors to meld beautifully.
Total time
In total, you’re looking at a satisfying 65 minutes from start to finish. This butternut squash gratin is not just easy, but the perfect cozy dish for any gathering!
Nutritional Facts for Butternut Squash Gratin
When enjoying your delightful butternut squash gratin, understanding its nutritional benefits can enhance your dining experience. Here’s a quick overview:
Calories
One serving of this rich and creamy gratin typically contains around 320 calories, offering a satisfying option for your meal.
Protein
With the incorporation of cheeses like Gruyère and Parmesan, each serving provides approximately 12 grams of protein, helping to keep you feeling full and energized throughout your day.
Carbohydrates
The butternut squash adds a healthy touch, contributing around 40 grams of carbohydrates per serving. This provides a great source of energy while also being packed with vitamins and minerals, making it a great addition to your plate!
For a deeper dive into the health benefits of butternut squash, check out Healthline's insights on its nutrition.
FAQs about Butternut Squash Gratin
Can I make this ahead of time?
Absolutely! You can prepare your butternut squash gratin a day in advance. Just assemble it, cover it with plastic wrap, and store it in the refrigerator. About an hour before serving, let it sit out at room temperature for about 30 minutes. When you're ready, bake it uncovered for about 30 minutes, or until it's warmed through.
How do I know when it's done?
You’ll know your butternut squash gratin is done when the sauce is bubbly and has thickened, and the squash is fork-tender. The golden top should have a lovely, slightly crispy texture, giving you that perfect gratin finish.
What can I substitute for heavy cream?
If you're looking for a lighter option, consider using half-and-half or a mix of milk and Greek yogurt. For a dairy-free alternative, coconut milk or cashew cream works wonderfully! Customize it to suit your dietary needs without sacrificing flavor.
Feel free to explore More Gratin Variations for inspiration on ingredients and techniques!
Conclusion on Butternut Squash Gratin
In conclusion, butternut squash gratin is a delectable dish that combines comforting flavors with a touch of sophistication. Perfect for cozy gatherings or a weekday dinner, this gratin showcases the versatility of squash. Give it a try, and your taste buds will thank you! For more cooking inspiration, explore these delicious squash recipes.

Butternut Squash Gratin
Equipment
- oven
- Baking dish
- Skillet
Ingredients
Squash and Oils
- 2.5 pounds butternut squash, cut into 1½-inch pieces
- 2 tablespoons extra-virgin olive oil
- 1.5 teaspoons kosher salt
Sauce
- 4 tablespoons salted butter ½ stick
- 2 large shallots, chopped
- 2 garlic cloves, minced
- 2 tablespoons chopped fresh sage
- 2 teaspoons fresh thyme leaves
- 1 cup heavy cream
- 0.25 teaspoon ground nutmeg
- 1.5 cups freshly grated Gruyère cheese
- 1 cup freshly grated Parmesan cheese
Garnish
- Freshly cracked black pepper for serving
- Fresh sage leaves for serving
Instructions
Preparation
- Preheat the oven to 400°F with a rack in the center position.
- Arrange the squash in a single layer in an 8 x 8-inch or 7 x 10-inch baking dish. Toss with 1 tablespoon of the olive oil and 1 teaspoon of the salt until coated. Bake for 25 minutes.
- Meanwhile, heat the butter and remaining 1 tablespoon oil in a large skillet over medium heat. Once the butter has melted, add the shallots and cook, stirring occasionally, until tender, about 4 minutes. Stir in the garlic, sage, and thyme and cook, stirring, until fragrant, about 1 minute. Add the heavy cream, nutmeg, and remaining ½ teaspoon salt and cook, stirring, until combined and steaming, about 5 minutes. Add the Gruyère and Parmesan, then reduce the heat to low. Cook, stirring, until the cheese has melted, about 5 minutes.
- Once the squash has roasted for 25 minutes, remove from the oven, leaving the oven on. Pour the cheese sauce over the squash, then return to the oven. Bake until the sauce has thickened and the squash is tender, about 20 minutes more.
- Let cool for 5 minutes, then top with the pepper and sage before serving.





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