The moment I first tasted Sweet Potato & Cranberry Gratin, I was transported to a cozy holiday gathering, where laughter and delicious aromas filled the air. This dish artfully blends the creamy sweetness of sweet potatoes with the tangy pop of cranberries, creating a delightful contrast that’s hard to resist. It’s not only a showstopper for your holiday table but also an easy, crowd-pleasing side that can be assembled in no time. Whether you need a comforting gluten-free option or a festive vegan twist, this gratin has you covered. With just a few simple steps, you’ll have a bubbling, golden masterpiece that will impress your guests and warm your soul. Ready to dive into this comforting recipe that brings together the best of the season? Let’s get cooking!

Why is this gratin a must-try?
Creamy Comfort: The rich layers of sweet potatoes and tangy cranberries come together to create a mouthwatering dish that’s both cozy and inviting.
Easy Assembly: With simple steps, you’ll have a stunning gratin ready for the oven in no time—perfect for busy holiday hosts!
Dietary Flexibility: Adaptable for vegan and gluten-free diets, everyone can enjoy this dish, making it ideal for gatherings.
Crowd Pleaser: This recipe typically garners rave reviews, turning even the pickiest eaters into fans.
Serving Versatility: Whether it’s paired with holiday meals or enjoyed as a stand-alone dish, it fits seamlessly into any occasion.
Craving more delicious side dishes? Check out my delightful Baked Potato Soup or whip up some sweet Blueberry Biscuits Sweet for dessert!
Sweet Potato & Cranberry Gratin Ingredients
For the Gratin
• Sweet Potatoes – Provide a naturally creamy texture and sweetness; butternut squash is a tasty alternative if you want a different flavor.
• Fresh Cranberries – Add a bright, tangy burst; if fresh isn’t available, use thawed and drained frozen cranberries for similar results.
• Heavy Cream – Creates a rich layer of creaminess; for a vegan twist, swap it out for luscious coconut cream.
• Brown Sugar – Enhances the overall sweetness with a hint of molasses; maple syrup works wonderfully as a substitute for a more complex flavor.
• Cinnamon – Infuses warm spice into the dish; nutmeg can be an aromatic alternative if you’re feeling adventurous.
• Salt & Pepper – Essential for elevating flavor; adjust to your taste preference.
• Gruyère Cheese – Provides a melty, creamy topping; consider replacing it with cheddar or mozzarella for a different taste or if you’re altering your diet.
• Breadcrumbs – Add a delightful crunch on top; for gluten-free versions, use gluten-free breadcrumbs or crushed nuts.
You’ll love how all these ingredients come together to create your Sweet Potato & Cranberry Gratin, making every bite a joyful celebration of flavor!
Step‑by‑Step Instructions for Sweet Potato & Cranberry Gratin
Step 1: Preheat the Oven
Begin by preheating your oven to 375°F (190°C). This initial step ensures that your Sweet Potato & Cranberry Gratin will bake evenly and achieve that golden-brown top that we all love. While the oven is heating up, you can prepare the other ingredients, saving you time as you assemble the dish.
Step 2: Prepare the Sweet Potatoes
Peel and slice the sweet potatoes into thin rounds for even cooking. Add them to a pot of boiling water and cook for 10–15 minutes until tender but not falling apart. Once fork-tender, drain the potatoes, and set them aside to cool slightly before layering them into your baking dish.
Step 3: Layer the Sweet Potatoes
Grease a baking dish to prevent sticking, then layer half of the cooked sweet potato slices in the dish, slightly overlapping for even coverage. The vibrant orange color should shine through as you create a solid base. This will set the stage for the beautiful layers of flavor that make the Sweet Potato & Cranberry Gratin a showstopper.
Step 4: Add the Cranberries
Sprinkle half of the fresh cranberries evenly over the first layer of sweet potatoes. The tartness of the cranberries will beautifully contrast with the sweetness of the potatoes, enhancing the overall flavor of your gratin. Ensure an even distribution to maximize that delightful burst of flavor in every bite.
Step 5: Mix the Cream Sauce
In a medium bowl, combine the heavy cream, brown sugar, cinnamon, salt, and pepper. Whisk the mixture until smooth and well-blended. This creamy sauce will provide richness to the Sweet Potato & Cranberry Gratin and help bind the layers together, making each bite a creamy delight.
Step 6: Pour the Cream Mixture
Pour half of the cream mixture evenly over the layered sweet potatoes and cranberries. Use a spoon to gently spread it out, ensuring it seeps into all the nooks and crannies. This layer will create a luscious texture that complements the sweet potatoes perfectly as you build your gratin.
Step 7: Repeat the Layers
Repeat the layering process with the remaining sweet potato slices and cranberries. Once the top layer is formed, pour the remaining cream mixture over everything, allowing it to settle between the layers. This second layering will add depth to your Sweet Potato & Cranberry Gratin, achieving an impressive presentation once baked.
Step 8: Add Cheese and Breadcrumbs
Sprinkle grated Gruyère cheese generously over the top of your gratin, followed by an even layer of breadcrumbs for a crunchy finish. This combination will form a delightful crust as it bakes, providing both flavor and texture that will elevate your dish to the next level.
Step 9: Bake to Perfection
Place the baking dish in your preheated oven and bake for 30–35 minutes. Keep an eye on your Sweet Potato & Cranberry Gratin; it’s done when the top is golden brown and bubbly. The delicious aroma wafting through your kitchen means it’s time to bring this flavorful side dish to the table.
Step 10: Cool and Serve
Once baked, remove the gratin from the oven and let it cool for a few minutes. This cooling period allows the layers to set, making it easier to serve. When ready, scoop out generous portions and enjoy the warm, comforting flavors of your Sweet Potato & Cranberry Gratin with family and friends!

Sweet Potato & Cranberry Gratin Variations
Feel free to make this comforting Sweet Potato & Cranberry Gratin truly your own with these delightful twists!
- Vegan Friendly: Replace heavy cream with coconut cream for a luscious vegan option that still delivers creamy satisfaction.
- Gluten-Free Crunch: Swap regular breadcrumbs with crushed gluten-free crackers or nuts for that irresistible crispy topping without the gluten.
- Cheese Swap: Experiment with different cheeses like mozzarella or feta to give the dish a whole new flavor profile; each brings its own character.
- Sweetness Twist: Substitute brown sugar with maple syrup for a unique sweetness that beautifully complements the sweet potatoes.
- Spice it Up: Add a pinch of cayenne or smoked paprika to the cream mixture for a touch of heat that balances the sweetness.
- Herb Infusion: Enhance the flavor by sprinkling fresh herbs such as thyme or rosemary between the layers to introduce a fragrant earthiness.
- Colorful Layers: Mix in some roasted bell peppers or carrots for extra color and a boost of nutrients, making every bite more festive.
- Nutty Goodness: Sprinkle chopped pecans or walnuts on top before baking for an added crunch and a rich nuttiness that pairs wonderfully with the sweet potatoes.
Ready for the perfect side to accompany your holiday feast? You might also want to check out my Baked Potato Soup or indulge in some delicious Blueberry Biscuits Sweet for dessert!
What to Serve with Sweet Potato & Cranberry Gratin
Pair this festive dish with delightful accompaniments that will elevate your holiday meal experience.
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Herb Roasted Turkey: The savory flavors of a perfectly roasted turkey enhance the gratin’s sweetness, creating a beautifully balanced plate.
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Maple Glazed Brussels Sprouts: The caramelized exterior and tender interior of these sprouts add both texture and a touch of sweetness that complements the gratin wonderfully.
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Cranberry Sauce: A tart, homemade cranberry sauce offers a refreshing contrast, harmonizing with the cranberries in the gratin.
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Creamy Mashed Potatoes: Smooth, buttery mashed potatoes provide a comforting and classic counterpart to the rich texture of the gratin, surely pleasing family and friends alike.
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Savory Stuffing: The herbed flavor profile of traditional stuffing pairs perfectly with the sweetness of the gratin, making every bite a celebration of comfort.
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Red Wine: A glass of rich, fruity red wine brings depth to your meal, with notes that enhance the earthy flavors of the sweet potatoes and cranberries.
Imagine your holiday table, adorned with these delectable options, each bringing its unique flair to complement your Sweet Potato & Cranberry Gratin while tantalizing taste buds all around!
Expert Tips for Sweet Potato & Cranberry Gratin
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Cut Evenly: Ensure sweet potatoes are sliced uniformly to promote even cooking throughout the dish; uneven sizes may result in some being undercooked or mushy.
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Watch Closely While Baking: Keep an eye on the gratin as it bakes to prevent over-browning or burning; the top should become a beautiful golden brown.
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Cooling Period: Allow the gratin to cool for a few minutes before serving; this helps the layers set, making it easier to slice and serve.
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Prep Ahead: Consider pre-assembling the Sweet Potato & Cranberry Gratin a day prior to your event; this can save valuable time and stress for busy holiday celebrations.
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Flavor Variations: Experiment with different cheese options, such as cheddar or mozzarella, for unique flavors; don’t hesitate to try your favorite combinations.
Make Ahead Options
Preparing your Sweet Potato & Cranberry Gratin ahead of time is a fantastic way to save precious moments on busy holiday days! You can slice and boil the sweet potatoes up to 24 hours in advance; simply store them in an airtight container in the refrigerator to keep them fresh. Additionally, layer the sweet potatoes and cranberries in the baking dish, and cover it tightly with plastic wrap to prevent drying out. When you’re ready to enjoy, pour the cream mixture over, add the cheese and breadcrumbs, and bake straight from the fridge, adjusting the baking time if needed. With this prep, you’ll have a delightful dish ready with minimal fuss—just as delicious as if you made it fresh!
Storage Tips for Sweet Potato & Cranberry Gratin
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Fridge: Store leftovers in an airtight container for up to 3 days, ensuring the delicious flavors of your Sweet Potato & Cranberry Gratin remain intact.
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Freezer: If you wish to keep it longer, freeze the gratin in a well-sealed freezer-safe container for up to 2 months. Thaw in the fridge before reheating.
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Reheating: For the best results, reheat in the oven at 350°F (175°C) until warmed through, usually around 20-25 minutes, to restore its creamy texture.
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Serving: Consider adding a sprinkle of fresh cheese or herbs on top before reheating for an extra touch of flavor and visual appeal!

Sweet Potato & Cranberry Gratin Recipe FAQs
How do I select the best sweet potatoes?
Absolutely! When choosing sweet potatoes, look for firm ones with smooth, blemish-free skin. Avoid any with dark spots or soft patches, as these indicate overripeness. The size can vary, but uniform sizes are best for even cooking!
What are the best storage methods for leftovers?
Very! Store leftovers in an airtight container in the fridge, and they should remain good for up to 3 days. Make sure to let them cool completely before sealing. To maintain freshness, it’s best not to reheat multiple times.
Can I freeze Sweet Potato & Cranberry Gratin?
Definitely! Freezing is a great option if you want to enjoy this dish later. Here’s how to do it: after baking, let the gratin cool completely. Then, wrap it tightly with plastic wrap and aluminum foil, or place it in a freezer-safe container. It can be stored in the freezer for up to 2 months. To reheat, thaw in the fridge overnight and warm in the oven at 350°F (175°C) for about 20-25 minutes.
What should I do if my gratin is too watery?
Ah, sometimes recipes can have their quirks! If your gratin comes out too watery, you can solve it by returning it to the oven uncovered for additional baking time. This allows moisture to evaporate. Alternatively, you might consider adding a bit more breadcrumbs or even a sprinkle of cornstarch to help absorb excess liquid during the layering process.
Is this dish safe for people with nut allergies?
Great question! Yes, the Sweet Potato & Cranberry Gratin itself is nut-free. However, if you’re using gluten-free breadcrumbs or nuts as a topping, be sure to check that they are from a certified nut-free source, especially if you’re serving someone with nut allergies. Adjusting your toppings can keep this dish safe for all your guests!
Can I make this vegan?
Absolutely! To create a vegan-friendly version, swap out the heavy cream for coconut cream and use nutritional yeast in place of Gruyère cheese for that cheesy flavor. This way, everyone can enjoy this tasty Sweet Potato & Cranberry Gratin at the table!

Sweet Potato & Cranberry Gratin: A Creamy Holiday Delight
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Peel and slice the sweet potatoes into thin rounds and boil for 10–15 minutes until tender.
- Layer half of the cooked sweet potato slices in a greased baking dish.
- Sprinkle half of the cranberries over the sweet potatoes.
- Mix heavy cream, brown sugar, cinnamon, salt, and pepper in a medium bowl until smooth.
- Pour half of the cream mixture over the layered sweet potatoes and cranberries.
- Repeat the layers with remaining sweet potatoes and cranberries, and pour remaining cream mixture.
- Sprinkle Gruyère cheese and breadcrumbs over the top.
- Bake for 30–35 minutes until the top is golden brown and bubbly.
- Let it cool for a few minutes before serving.

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