As I slid the tray of Sweet Potato & Cranberry Gratin into the oven, the inviting aroma of sweet and savory mingled in the air, instantly lifting my spirits. This festive side dish is the perfect marriage of creamy sweet potatoes and sharp cranberries, making it an eye-catching addition to any holiday table. Not only is it quick to prepare, but it also makes me feel like a culinary superstar without spending hours in the kitchen. The vibrant colors and delicious flavors will undoubtedly make your loved ones return for seconds, all while accommodating various dietary needs, including vegan and gluten-free options. Are you ready to discover how to create this show-stopping gratin that will impress everyone gathered around your table?

Why is this gratin so irresistible?
Creamy Comfort: With layers of tender sweet potatoes and tangy cranberries, this dish is a warm hug on a plate.
Crowd-Pleasing Appeal: Perfect for gatherings, it dazzles both eyes and taste buds, ensuring seconds will be requested!
Versatile Options: Whether you prefer it vegan with coconut cream or classic with Gruyère cheese, it adapts beautifully while maintaining fantastic flavor.
Time-Saving Magic: Prepping this gratin is a breeze, making it ideal for busy holiday cooks eager to impress without the hassle!
A Festive Twist: Elevate your seasonal spread with this unique side, showing that traditional dishes can be both comforting and innovative. If you’re looking for more delicious holiday ideas, try pairing it with Maple Sweet Potato or adding a touch to your festive meal with our Potatoes Gratin Decadent recipe!
Sweet Potato & Cranberry Gratin Ingredients
For the Gratin
• Sweet Potatoes – Provide natural sweetness and a creamy texture; peel and slice before boiling for easy layering.
• Cranberries – Add a burst of tartness that perfectly balances the sweet potatoes; fresh cranberries are best, but frozen can work if thawed and drained.
• Heavy Cream – Brings richness and creaminess to the dish; substitute with coconut cream for a vegan version.
• Brown Sugar – Enhances caramelization and sweetness; swap with maple syrup for a unique flavor twist.
• Cinnamon – Infuses warmth and depth; stick with fresh for the best results—no substitutions needed.
• Salt & Pepper – Essential for seasoning; adjust according to your taste preferences.
• Gruyère Cheese – Offers a nutty, creamy flavor; for alternatives, consider cheddar, mozzarella, or even feta cheese.
• Breadcrumbs – Creates a delightful crispy topping; use gluten-free breadcrumbs or crushed nuts for a gluten-free version.
This Sweet Potato & Cranberry Gratin makes for an unforgettable addition to your holiday meals, captivating everyone with its delicious layers and vibrant colors.
Step‑by‑Step Instructions for Sweet Potato & Cranberry Gratin
Step 1: Preheat the Oven
Begin by preheating your oven to 375°F (190°C), ensuring it’s ready to create a beautifully golden crust on your Sweet Potato & Cranberry Gratin. This initial step is crucial, as it prepares the environment for even baking as soon as your dish is assembled.
Step 2: Prepare the Sweet Potatoes
Peel and slice the sweet potatoes into even rounds. In a large pot of boiling water, add the sweet potatoes and cook for about 10–15 minutes until tender, which you can test with a fork. Once softened, drain the sweet potatoes and let them cool slightly for easier handling during layering.
Step 3: Layer the Sweet Potatoes
Grease a 9×13 inch baking dish with a bit of butter or oil. Layer half of the boiled sweet potatoes evenly across the bottom of the dish, creating a sturdy base for your gratin. The vibrant orange color will evoke warmth and comfort, setting the tone for this festive dish.
Step 4: Add Cranberries
Sprinkle half of the fresh cranberries over the layer of sweet potatoes, ensuring an even distribution. The tartness of the cranberries beautifully contrasts with the sweetness of the sweet potatoes, adding layers of flavor to the Sweet Potato & Cranberry Gratin that will dance on your taste buds.
Step 5: Mix the Cream Mixture
In a mixing bowl, combine heavy cream, brown sugar, cinnamon, salt, and pepper. Whisk the ingredients together until smooth, allowing the sweetness and warmth to meld. Pour half of this delightful cream mixture evenly over the layered sweet potatoes and cranberries, enriching the flavors throughout.
Step 6: Repeat Layering
Now, repeat the layering process by adding the remaining sweet potatoes on top of the first layer. Follow this with another sprinkle of the remaining cranberries, ensuring vibrant bursts of tartness remain throughout your dish. This repetition enhances both the taste and the visual appeal of the Sweet Potato & Cranberry Gratin.
Step 7: Top it Off
Pour the remaining cream mixture over the final layer, which will create a luscious, creamy texture as it bakes. Then, generously sprinkle shredded Gruyère cheese and breadcrumbs across the top. This topping will transform into a crispy, golden shield, locking in all the goodness and providing a delightful crunch.
Step 8: Bake to Perfection
Carefully place the baking dish in the preheated oven and bake for 30–35 minutes. Keep an eye on the gratin; it should bubble and turn a beautiful golden brown when finished. The enticing aroma will fill your kitchen, promising a delicious outcome that will wow your holiday guests.
Step 9: Cool Before Serving
Once baked, remove the Sweet Potato & Cranberry Gratin from the oven and allow it to cool for a few minutes. This cooling period helps to set the layers, making it easier to serve. As you slice into it, the creamy layers will blend beautifully, inviting everyone to indulge in this cozy holiday delight.

How to Store and Freeze Sweet Potato & Cranberry Gratin
- Fridge: Store leftovers in an airtight container for up to 3 days. Reheat in the oven at 350°F (175°C) for about 15-20 minutes or until warmed through.
- Freezer: You can freeze the assembled gratin before baking. Wrap tightly in plastic wrap and foil for up to 2 months. Thaw overnight in the fridge before baking.
- Reheating: To reheat frozen gratin, bake at 375°F (190°C) for 45-60 minutes, covering with foil until heated through, then uncover to crisp the top for the last 10 minutes.
- Make-Ahead Tip: Assemble your Sweet Potato & Cranberry Gratin a day in advance, refrigerating it overnight before popping it into the oven when ready to serve.
Expert Tips for Sweet Potato & Cranberry Gratin
- Prep Ahead: Assemble the gratin the day before, cover it well, and refrigerate. Bake it right before serving to save time.
- Perfectly Boiled: Boil the sweet potatoes until just tender to avoid mashy layers; this ensures easy stacking in the gratin.
- Cooling Time: Allow the gratin to cool for a few minutes after baking; this helps the layers set nicely for a more appealing presentation.
- Flavor Boost: For extra depth, consider adding a pinch of nutmeg or a splash of vanilla extract to the cream mixture while preparing the Sweet Potato & Cranberry Gratin.
- Cheese Choices: Feel free to mix and match cheeses; a blend of Gruyère and sharp cheddar will elevate flavor while maintaining smoothness.
What to Serve with Sweet Potato & Cranberry Gratin
Elevate your holiday feast with delightful accompaniments that complement the creamy, tangy layers of this gratin.
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Garlic Roasted Brussels Sprouts: The earthy flavors add a crunchy contrast, enhancing your meal’s festive feel with vibrant healthiness.
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Honey-Balsamic Glazed Carrots: Their natural sweetness pairs beautifully with the cranberries, while the balsamic brings a zesty kick that balances flavors.
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Creamy Mushroom Risotto: A luxurious, earthy side that contrasts well with the gratin’s sweetness, providing a lush mouthfeel that comforts every bite.
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Crispy Mixed Green Salad: A fresh, zesty salad with citrus dressing adds vibrant color and a refreshing crunch, cutting through the richness of the gratin.
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Herb-Infused Quinoa: Light yet flavorful, this nutty grain dish enhances the meal while offering a protein-packed option that’s both satisfying and wholesome.
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Sparkling Cranberry Mocktail: A festive drink option that echoes the cranberries’ flavor, adding a refreshing touch to your holiday gathering while keeping spirits high.
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Pumpkin Pie: The classic holiday dessert rounds out the meal perfectly, offering a sweet finale with spices that harmonize beautifully with the gratin’s warmth.
Make Ahead Options
These Sweet Potato & Cranberry Gratin are perfect for busy cooks looking to save time without compromising on flavor! You can assemble the entire gratin up to 24 hours in advance, just cover it tightly with plastic wrap and refrigerate. To maintain the quality, ensure the sweet potatoes are well-boiled and the layers are packed evenly, which helps everything meld together beautifully. When you’re ready to serve, simply remove the plastic wrap and pop it in a preheated oven at 375°F (190°C) for 30–35 minutes until golden brown and bubbly. This way, you’ll enjoy a delicious, warm dish with minimal effort, allowing you to focus on the festive gathering!
Sweet Potato & Cranberry Gratin Variations
Feel free to get creative with this recipe to suit your taste and dietary preferences!
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Vegan Option: Replace heavy cream with coconut cream for a rich, dairy-free alternative. This twist will keep all the creaminess while being gentle on the tummy.
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Cheese Swaps: Use cheddar, mozzarella, or feta instead of Gruyère for different flavor profiles. Each cheese brings a unique taste, letting you tailor the gratin to your liking.
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Gluten-Free: Substitute traditional breadcrumbs with gluten-free breadcrumbs or crushed nuts. This simple switch ensures everyone can enjoy this delightful dish without worry.
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Extra Sweetness: Incorporate maple syrup in place of brown sugar to add a lovely caramel note. This can enhance the overall sweetness and give a festive vibe to your dish!
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Cranberry Twist: Try adding dried cranberries or raisins for an extra burst of sweetness and chewy texture. These additions complement the creamy sweet potatoes beautifully.
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Spices for Warmth: Sprinkle a touch of nutmeg or ginger into your cream mixture for added depth and warmth. This infusion of spices will make your kitchen smell heavenly during baking.
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Layering Alternatives: Mix in some sautéed onions or garlic between layers for a savory dimension. The combination of sweet and savory is truly a match made in culinary heaven.
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Spicy Kick: If you’re feeling adventurous, add a pinch of cayenne pepper or crushed red pepper flakes to the cream mixture for a spicy twist. This will elevate the flavor profile and add a bit of heat to each serving.
As you explore these variations, consider serving this gratin alongside a comforting Carrot Potato Soup for a complete and heartwarming meal!

Sweet Potato & Cranberry Gratin Recipe FAQs
How do I choose the right sweet potatoes?
Absolutely! Look for sweet potatoes that are firm and free of dark spots or blemishes. The skin should be smooth and not wrinkly. The sweeter and fresher they are, the better your Sweet Potato & Cranberry Gratin will taste!
How can I store leftovers?
Leftovers can be stored in an airtight container in the fridge for up to 3 days. Before serving, simply reheat in the oven at 350°F (175°C) for about 15-20 minutes until warmed through. The flavors develop further overnight, making it even more delicious, if that’s possible!
Can I freeze the gratin? What’s the process?
Yes, you can! To freeze your Sweet Potato & Cranberry Gratin before baking, wrap it tightly in plastic wrap and then in aluminum foil to prevent freezer burn. It will keep well for up to 2 months. When you’re ready to bake, thaw it overnight in the fridge, then bake at 375°F (190°C) for 45-60 minutes. Cover it with foil until heated through, then uncover for the last 10 minutes to get that wonderful crispy topping.
What if my sweet potatoes are too soft after boiling?
Very! If your sweet potatoes become too soft, the layers may mash together instead of holding their shape in the gratin. Boil them only until tender, about 10-15 minutes, ensuring they can still be layered easily. If you find yourself with overly soft sweet potatoes, consider mashing them slightly to create a creamy base layer, though it will alter the texture of your gratin.
Are there any dietary considerations I should know about?
Certainly! For gluten-sensitive individuals, simply swap traditional breadcrumbs for gluten-free breadcrumbs or crushed nuts. If you want a vegan version, you can use coconut cream in place of heavy cream and opt for vegan cheese or eliminate cheese altogether. Just check ingredient labels to avoid allergens like dairy or nuts, depending on your guests’ needs.
How do I know when the gratin is perfectly baked?
Your Sweet Potato & Cranberry Gratin will be done when it’s bubbly and that golden top has formed beautifully, usually after 30-35 minutes in the oven. Let it cool for a few minutes before serving; this waiting time helps set the layers. Trust me, the aroma alone will let you know when it’s time to dig in!

Sweet Potato & Cranberry Gratin: A Cozy Holiday Delight
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Peel and slice the sweet potatoes. Cook in boiling water for 10-15 minutes until tender, then drain.
- Grease a 9x13 inch baking dish and layer half of the sweet potatoes on the bottom.
- Sprinkle half of the cranberries over the sweet potatoes.
- Mix heavy cream, brown sugar, cinnamon, salt, and pepper in a bowl, then pour half over the layered ingredients.
- Repeat the layering with the remaining sweet potatoes and cranberries.
- Pour the remaining cream mixture over the top, then sprinkle shredded Gruyère cheese and breadcrumbs.
- Bake for 30-35 minutes until golden brown and bubbly.
- Cool for a few minutes before serving.

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