As I stood in my cozy kitchen, the sweet, earthy aroma of butternut squash filled the air, instantly transporting me to cozy autumn evenings. Today, I’m excited to share my recipe for Sage Butternut Squash Gratin with Creamy Parmesan Topping, a dish that beautifully combines creamy textures with warm flavors. This delectable gratin is not only gluten-free and vegetarian-friendly, but it also makes for an impressive side dish perfect for holiday gatherings. With quick prep and the ability to be made ahead, it fits seamlessly into your bustling kitchen schedule. Whether you’re serving it at Thanksgiving or Christmas, each bite is a comforting embrace that will leave your family and friends clamoring for more. What’s your favorite fall flavor that complements every family gathering?

Why is This Gratin a Must-Try?
Comforting, wholesome flavors: The combination of butternut squash and savory cream creates a rich, satisfying dish that resonates with everyone.
Effortless elegance: It’s perfect for holiday gatherings, transforming your table into a warm, inviting feast that guests will adore.
Gluten-free and vegetarian: This recipe accommodates various dietary needs without sacrificing taste or texture.
Make-ahead convenience: The gratin can be prepared in advance, allowing you to focus on other dishes without losing that freshly-baked charm.
Versatile ingredient choices: Feel free to get creative! You can layer in other vegetables or enhance it with meats, making it a unique dish for every occasion.
Once you try this, you might want to explore more seasonal recipes like Butternut Squash Apple or a cozy Root Vegetable Gratin to keep the flavors of fall warming your kitchen.
Sage Butternut Squash Gratin Ingredients
• Get ready to create a deliciously cozy dish!
For the Gratin
- Butternut Squash – Main ingredient that transforms into a creamy delight when baked. Peel and slice thinly for the best texture.
- Shallots – Adds a subtle, sweet onion flavor; use yellow onion if shallots aren’t available.
- Garlic – Provides aromatic depth; fresh garlic is a game-changer in this dish.
- Butter – Essential for sautéing shallots and garlic, but olive oil can be used for a dairy-free alternative.
- Gluten-Free Flour – Thickens your cream sauce seamlessly; make sure to look for certified gluten-free flour if needed.
- Vegetable Stock – Serves as the flavorful base for the cream; for non-vegetarians, chicken stock works well.
- Heavy Cream – Creates a luscious, creamy texture; substitute with coconut cream for a dairy-free version.
- Parmesan Cheese – Delivers a crispy, savory topping; for a vegan option, try nutritional yeast.
- Sage Leaves – Infuses the gratin with fragrant herbal notes; thyme can be used as a substitute.
- Onion Powder – Intensifies the flavor; it’s optional, but it adds a nice richness.
For the Topping
- Chives – Freshly chopped chives make a vibrant garnish, adding a touch of color and flavor.
This Sage Butternut Squash Gratin will not only warm your heart but will surely impress everyone around the table!
Step‑by‑Step Instructions for Sage Butternut Squash Gratin
Step 1: Preheat the Oven
Begin by preheating your oven to 400°F (200°C). This will ensure that when your Sage Butternut Squash Gratin is ready to bake, the oven is hot enough to create that perfect golden crust. While the oven heats up, you can shift your focus to prepping the ingredients.
Step 2: Prepare the Butternut Squash
Peel the butternut squash and thinly slice it into half rounds, approximately 1/4 inch thick. Take care to remove the seeds and stringy bits from the center. Visually, the slices should look uniform to ensure even cooking. This step is crucial for achieving the creamy texture that makes the gratin so delightful.
Step 3: Sauté the Aromatics
In a medium saucepan, melt a tablespoon of butter over medium heat. Once melted, add the shallots and minced garlic, sautéing for about 1-2 minutes until fragrant. You want them to soften and become translucent without browning, which enhances the flavor of the Sage Butternut Squash Gratin. Stir regularly to prevent sticking.
Step 4: Create the Roux
Stir in the gluten-free flour to the sautéed shallots and garlic, forming a roux. Cook for 1-2 minutes, stirring continuously, until the mixture turns a light golden color. Gradually whisk in the vegetable stock, making sure to incorporate it fully without clumps. This will form the base of your creamy sauce for the gratin.
Step 5: Make the Creamy Sauce
Slowly pour in the heavy cream, stirring gently so it combines well with the roux and stock. Add the sage leaves, onion powder, and a pinch of pepper, stirring until smooth. Be careful not to let the mixture boil; instead, heat until it’s just warmed through. This creamy sauce will envelop the butternut squash beautifully.
Step 6: Assemble the Gratin
Grease a 9×13 inch baking dish with a little butter, coating the bottom evenly. Pour about one-third of the prepared creamy sauce into the dish to create a flavorful base. Then, layer half of the butternut squash slices on top, overlapping them gently. Pour half of the remaining sauce over the squash, allowing it to soak in.
Step 7: Layer and Pour Remaining Sauce
Repeat the layering process with the remaining butternut squash, arranging the slices neatly. Finish by pouring the last third of the creamy sauce evenly over the top, ensuring all the squash is covered. The sauce will work its magic while baking, infusing each bite with that comforting flavor you’ve been creating.
Step 8: Bake the Gratin
Cover the baking dish with a layer of parchment paper followed by aluminum foil, which helps steam the gratin for the first part of baking. Place it in the oven and bake for 20 minutes. You’ll know it’s cooking well when you see steam escaping slightly; this helps tenderize the butternut squash.
Step 9: Add the Crisp Topping
After 20 minutes, carefully remove the cover, revealing the bubbling goodness underneath. Sprinkle the grated parmesan cheese generously over the top of the gratin. This addition will create that sought-after crispy layer while also enhancing the savory profile of your Sage Butternut Squash Gratin.
Step 10: Finish Baking
Return the uncovered gratin to the oven and bake for an additional 10 minutes or until the cheese is golden brown and crispy. Keep an eye on it during the last few minutes to prevent burning. The gratin should be bubbling and fragrant, signaling that it’s ready to serve.
Step 11: Garnish and Serve
Once baked, remove the dish from the oven and let it cool for a few moments. Garnish your Sage Butternut Squash Gratin with freshly chopped chives to add a burst of color and flavor. Serve warm, and watch as your loved ones dive into this comforting, cozy dish that embodies the spirit of home-cooked warmth.

How to Store and Freeze Sage Butternut Squash Gratin
Fridge: Allow the gratin to cool completely, then cover it tightly with plastic wrap or place it in an airtight container. It will stay fresh for up to 2 days in the refrigerator.
Freezer: For longer storage, freeze the baked gratin in an airtight container or heavy-duty freezer bag. It can be kept for up to 3 months. Portion it for easy reheating!
Reheating: Thaw overnight in the fridge before reheating. Warm it in the oven at 350°F (175°C) for about 20-25 minutes until heated through, ensuring every bite of your Sage Butternut Squash Gratin tastes fresh and delicious.
Make-Ahead Tip: Prepare the gratin in advance and store unbaked in the fridge for 1-2 days, or freeze before baking to save time on busy holiday gatherings.
Sage Butternut Squash Gratin Variations
Feel free to explore these delicious alternatives that will elevate your gratin experience!
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Dairy-Free: Substitute heavy cream with almond or oat milk for a lighter, dairy-free option while maintaining creaminess.
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Veggie-Loaded: Layer in sautéed spinach or zucchini for extra nutrition and a pop of color in your gratin. These vibrant veggies blend harmoniously with the squash’s sweetness.
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Savory Herbs: Experiment with fresh thyme instead of sage for a different herbaceous twist that adds complexity to the flavor profile.
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Meaty Delight: Add crispy bacon bits or diced ham between layers for a savory, meaty version that’s perfect for those who crave depth in their dishes.
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Spice it Up: Incorporate a pinch of red pepper flakes for a delightful, subtle heat that’ll awaken the taste buds. Just remember, a little goes a long way to keep the harmony intact.
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Cheesy Crust: For extra decadence, mix shredded mozzarella or Gruyère cheese with the parmesan on top for a gooey, melty finish that adds a delightful texture.
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Nutty Crunch: Top with crushed nuts, such as walnuts or pecans, before baking to add a satisfying crunch and a toasty flavor that enhances the dish.
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Flavor Infusion: Replace vegetable stock with white wine for a touch of acidity and complexity that enhances the overall flavor. It’s a surprising yet pleasant twist, especially during the holidays!
Feel free to mix and match these variations to make this Sage Butternut Squash Gratin your own. And if you love the flavors of autumn, consider trying more comforting recipes like Butternut Squash Apple or a delightful Root Vegetable Gratin to keep your meals vibrant and seasonal!
Make Ahead Options
These Sage Butternut Squash Gratin are perfect for busy home cooks looking to save time during hectic holiday preparations! You can slice the butternut squash and prepare the creamy sauce up to 24 hours in advance. Simply store each component separately in airtight containers in the refrigerator to maintain quality (this prevents the squash from browning). When you’re ready to complete the dish, layer the squash and sauce in your baking dish, cover, and bake as directed. Just add the Parmesan topping during the final baking time for that crispy finish, ensuring you have a delicious, ready-to-serve side without the last-minute rush!
What to Serve with Sage Butternut Squash Gratin
As you savor the warm, creamy layers of this delightful dish, consider enhancing your meal with these complementary sides and flavors.
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Herb-Roasted Turkey: Juicy and perfectly seasoned, the savory notes of turkey balance the sweetness of butternut squash beautifully.
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Garlicky Green Beans: These tender beans add a crisp, fresh contrast, making each bite a delightful textural experience. Their vibrant color brightens up your plate.
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Cranberry Sauce: This tart and sweet accompaniment elevates the flavors of the gratin while adding a festive touch to your meal.
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Autumn Salad: A mix of arugula, apples, and walnuts brings a refreshing crunch and a hint of sweetness that complements the creamy gratin.
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Baked Ham: The salty, smoky flavor of baked ham creates a delightful contrast to the rich and sweet gratin, perfect for holiday feasts.
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Savory Dinner Rolls: Warm, buttery rolls are perfect for soaking up the creamy sauce, adding a cozy carbohydrate element to your table.
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Mulled Wine: This warm and spiced drink enhances the seasonal vibes while pairing wonderfully with the earthy flavors of the squash.
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Pumpkin Cheesecake: For dessert, a slice of pumpkin cheesecake provides a luscious finish, carrying the fall spirit through to the last bite.
With these pairings, your Sage Butternut Squash Gratin will shine as a star on the table, creating a warm and inviting holiday meal.
Expert Tips for Sage Butternut Squash Gratin
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Uniform Slices: Ensure all butternut squash slices are the same thickness to achieve even cooking. A mandoline slicer can help with this.
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Careful with Cream: Avoid bringing the cream sauce to a boil to prevent curdling. Gently heat it until warmed through for a perfect consistency.
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Fresh Herbs Win: Use fresh sage for the best flavor in your Sage Butternut Squash Gratin. Dried herbs can lack the same aromatic punch.
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Layer Wisely: Lay the butternut squash slices neatly and overlap them slightly to maximize flavor retention and texture in every bite.
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Watch the Top: Keep an eye on the gratin during the last few minutes of baking to ensure the parmesan topping turns golden brown without burning.

Sage Butternut Squash Gratin Recipe FAQs
How do I choose ripe butternut squash?
Absolutely! When selecting butternut squash, look for smooth, firm skin without any dark spots or blemishes. The squash should feel heavy for its size and have a tan or light yellow color. A good squash will also have a sturdy stem, ensuring it’s fresh.
What’s the best way to store leftover gratin?
Very! Let your Sage Butternut Squash Gratin cool completely after cooking, then cover it tightly with plastic wrap or transfer it into an airtight container. It can be stored in the refrigerator for up to 2 days. When ready to enjoy again, simply reheat it gently so that it retains its creamy texture.
Can I freeze the Sage Butternut Squash Gratin?
Absolutely! To freeze, make sure the gratin has cooled completely. Then, wrap it tightly in plastic wrap, followed by aluminum foil, or place it in a heavy-duty freezer bag, which helps prevent freezer burn. It can be stored for up to 3 months. For the best results, thaw it overnight in the fridge before reheating.
What if my cream sauce curdles?
Oh no! If your cream sauce curdles, don’t panic. This can happen if it’s overheated. To salvage it, try whisking in a splash of warm vegetable stock or heavy cream to smooth it out. Next time, keep the heat low and avoid bringing it to a boil for a perfect creamy consistency.
Is this gratin safe for gluten-free diets?
Absolutely! By using gluten-free flour as specified in the recipe, your Sage Butternut Squash Gratin can be enjoyed by those with gluten sensitivities. Just ensure any other packaged ingredients, like vegetable or chicken stock, are gluten-free as well. Always check labels to be on the safe side.

Sage Butternut Squash Gratin for Cozy Holiday Gatherings
Ingredients
Equipment
Method
- Preheat your oven to 400°F (200°C).
- Peel and thinly slice the butternut squash into half rounds, about 1/4 inch thick.
- Melt a tablespoon of butter in a medium saucepan over medium heat. Add shallots and garlic, sauté for 1-2 minutes.
- Stir in gluten-free flour to the shallots and garlic, forming a roux. Cook for 1-2 minutes until golden.
- Gradually whisk in vegetable stock, making sure there are no clumps. This forms the base for your creamy sauce.
- Slowly pour in heavy cream and stir. Add sage leaves, onion powder, and pepper, stirring until smooth.
- Grease a 9x13 inch baking dish with butter. Pour a third of the creamy sauce into the dish, then layer half of the squash slices.
- Repeat layering with the remaining squash and sauce, finishing with the last third of creamy sauce on top.
- Cover with parchment paper and aluminum foil, bake for 20 minutes. Remove the cover to sprinkle on Parmesan cheese.
- Return to the oven uncovered and bake for an additional 10 minutes until cheese is golden brown.
- Garnish with freshly chopped chives and serve warm.

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