The moment I lifted the lid from the bubbling dish, a wave of warmth and nostalgia washed over me, taking me back to holidays filled with laughter and family feasts. This Sweet Potato & Cranberry Gratin encapsulates all the cozy comfort of the season, marrying creamy, tender sweet potatoes with the delightful tang of cranberries. Perfect for busy cooks, this dish comes together in just 55 minutes, allowing you to savor the joyous occasion rather than hustle in the kitchen. Not only is it a show-stopping side that pairs beautifully with any holiday spread, but it also offers the flexibility to cater to different dietary needs—making it a hit with everyone at the table. Curious how to recreate this festive masterpiece? Let’s dive in!

Why is This Gratin So Irresistible?
Comfort: This recipe offers a warm embrace of flavors that feels like home.
Versatility: Easily adapt it to be vegan or gluten-free, making it suitable for all guests.
Quick & Simple: With just 55 minutes from prep to table, you’ll have more time for festivities.
Elegant Presentation: Serve this gratin confidently as the centerpiece at any holiday gathering.
Wholesome Ingredients: Packed with nutrients from sweet potatoes and cranberries, it’s both delicious and nourishing.
Whether you’re in the mood for a hassle-free side or want to impress guests, the Sweet Potato & Cranberry Gratin is your go-to! For additional inspiration, check out these great recipes: Potato Egg Cheese and Sweet Chili Chicken.
Sweet Potato & Cranberry Gratin Ingredients
Curiosity Note: Dive into the delicious layers of this Sweet Potato & Cranberry Gratin that will delight your taste buds!
For the Gratin Base
• Sweet Potatoes – Provides the dish’s base and natural sweetness; substitute with butternut squash for a different flavor.
• Fresh Cranberries – Adds tartness and depth to the flavor profile; frozen cranberries can be used if thawed and drained.
• Heavy Cream – Creates a rich, creamy texture; substitute with coconut cream for a vegan option.
For Sweetness & Spice
• Brown Sugar – Balances the acidity of cranberries; can be replaced with maple syrup for a different sweetness profile.
• Cinnamon – Enhances warmth and flavor; can be omitted for a more neutral taste.
• Salt & Pepper – Essential for seasoning; adjust to taste.
For the Topping
• Gruyère Cheese – Adds creaminess and savory flavor; can be substituted with cheddar, mozzarella, or feta for variations.
• Breadcrumbs – Provides a crispy topping; use gluten-free breadcrumbs for a gluten-free version.
Embrace the warm flavors of the season with this irresistibly cozy Sweet Potato & Cranberry Gratin!
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 step is crucial for achieving that beautiful golden brown top and ensures even cooking throughout the Sweet Potato & Cranberry Gratin. Allow your oven to heat fully while you prepare the ingredients, filling your kitchen with the anticipation of deliciousness to come.
Step 2: Prepare the Sweet Potatoes
Peel and slice the sweet potatoes into thin rounds, aiming for about 1/4 inch thickness for optimal cooking. Place the slices in a pot of boiling water and let them simmer for 10 to 15 minutes, or until they are fork-tender. Drain the sweet potatoes and set them aside, ready to create the comforting layers of the gratin.
Step 3: Layer the Gratin Base
Take a greased 9×13-inch baking dish and layer half of the boiled sweet potato slices evenly across the bottom. This will create the delicious foundation for your Sweet Potato & Cranberry Gratin. Ensure the slices overlap slightly for cohesive layering, then prepare for the next burst of flavor by distributing half of the fresh cranberries over the sweet potatoes.
Step 4: Mix the Cream Mixture
In a medium mixing bowl, whisk together the heavy cream, brown sugar, ground cinnamon, salt, and pepper until well combined. This creamy mixture will bring richness to your gratin and balance the tartness of the cranberries. Pour half of this luscious cream mixture evenly over the sweet potato and cranberry layer, smoothing it gently to cover.
Step 5: Build the Second Layer
Repeat the layering process by adding the remaining sweet potato slices on top of the cranberries, creating another delightful layer of goodness. Scatter the rest of the cranberries over the top, ensuring every bite is filled with the sweet and tangy flavors. Follow this by pouring the remaining cream mixture over the top layer, letting it seep into the layers below.
Step 6: Add the Topping
Sprinkle the shredded Gruyère cheese generously over the final layer of the Sweet Potato & Cranberry Gratin. The cheese will melt into a creamy, savory topping. Next, add the breadcrumbs evenly over the cheese to create a crispy, golden crust. This combination will give your dish a delightful texture and added flavor.
Step 7: Bake the Gratin
Carefully place your baking dish in the preheated oven and bake for 30 to 35 minutes. You’ll know your Sweet Potato & Cranberry Gratin is done when it is bubbly and the top is a beautiful golden brown. The aroma wafting through your kitchen at this point will be irresistible!
Step 8: Cool and Serve
Once baked, remove the gratin from the oven and allow it to cool for a few minutes. This cooling period helps set the layers and makes serving easier. The Sweet Potato & Cranberry Gratin is now ready to be dished out at your next gathering, offering warmth and comfort in every bite!

Make Ahead Options
Preparing the Sweet Potato & Cranberry Gratin ahead of time is a real game-changer for busy home cooks! You can assemble the entire dish up to 24 hours in advance, covering it tightly with plastic wrap and refrigerating until you’re ready to bake. This not only saves time but also allows the flavors to meld beautifully. When you’re ready to serve, simply remove the wrap and bake it straight from the fridge, adding an extra 5-10 minutes to the baking time to ensure it’s heated through. To maintain the quality, ensure it’s stored in an airtight container and that the cream mixture is evenly distributed for maximum flavor in every bite. Enjoy the convenience of this delicious Sweet Potato & Cranberry Gratin with minimal effort on your special day!
Expert Tips for Sweet Potato & Cranberry Gratin
Preheat Properly: Ensure your oven is fully preheated before baking. This guarantees even cooking and that perfect golden top on your gratin.
Tender Sweet Potatoes: Boil the sweet potatoes until they are fork-tender. This makes layering easier and enhances the texture in the Sweet Potato & Cranberry Gratin.
Layer Thoughtfully: Evenly distributing the cranberries and cream mixture ensures every bite bursts with flavor. Don’t skimp on the layers!
Cooling Period: Allow the gratin to cool slightly before serving. This helps the layers set together, making for neater servings and a better texture.
Store Smartly: If you have leftovers, store them in an airtight container in the fridge for up to three days. Reheat gently to preserve texture.
What to Serve with Sweet Potato & Cranberry Gratin
Whether you’re hosting a festive holiday dinner or simply enjoying a cozy meal at home, pairing the Sweet Potato & Cranberry Gratin with complementary dishes elevates your dining experience.
- Roast Chicken: The savory flavors of roast chicken perfectly contrast the sweetness of the gratin, bringing balance to your meal.
- Garlic Green Beans: Crisp-tender green beans offer a fresh crunch that brightens every bite of the creamy gratin.
- Stuffed Acorn Squash: This hearty dish provides a delightful texture and flavor harmony, making it an excellent vegetarian option.
- Cranberry Sauce: A dollop of homemade cranberry sauce adds an extra tart kick that enhances the sweetness of the gratin.
- Mixed Green Salad: A refreshing salad dressed with a light vinaigrette serves as a palate cleanser between bites of rich gratin.
- Pumpkin Soup: Start with a bowl of velvety pumpkin soup for a warm, comforting appetizer that sets the perfect seasonal tone.
- Sparkling Cider: A glass of sparkling cider adds festive flair and has just the right amount of sweetness to complement the gratin.
- Chocolate Mousse: Finish the meal with a light and airy chocolate mousse—it’s the perfect sweet treat to end on a high note!
How to Store and Freeze Sweet Potato & Cranberry Gratin
Fridge: Store leftovers in an airtight container for up to 3 days to maintain freshness and prevent drying out.
Freezer: If you want to keep it longer, freeze the gratin for up to 3 months. Wrap it tightly in plastic wrap followed by aluminum foil for best results.
Reheating: To enjoy, thaw overnight in the fridge and reheat in a preheated oven at 350°F (175°C) for about 20-25 minutes until heated through.
Make-Ahead Tip: You can assemble the Sweet Potato & Cranberry Gratin a day in advance, cover, and refrigerate. Bake just before serving for optimal freshness.
Sweet Potato & Cranberry Gratin Variations
Feel free to get creative and customize this comforting dish to suit your taste and dietary preferences!
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Vegan Option: Swap heavy cream for coconut cream and use plant-based cheese for a delicious dairy-free alternative. The creamy coconut pairs beautifully with the sweet and tangy flavors.
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Gluten-Free: To make the gratin gluten-free, simply replace regular breadcrumbs with gluten-free breadcrumbs. This ensures everyone can enjoy a crunchy topping without worry.
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Flavor Boost: Add a pinch of nutmeg along with the cinnamon for a warm, aromatic twist. This little addition brings an unexpected depth to the dish that’s truly delightful.
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Cheesy Variation: If you’re craving a different cheese flavor, try using feta or goat cheese instead of Gruyère. The tanginess of these cheeses adds a lovely contrast to the sweetness of the potatoes and cranberries.
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Nutty Crunch: Stir in chopped pecans or walnuts between the layers for a satisfying crunch and added nutrition. These nuts will complement the flavors beautifully and give your gratin a wonderful texture.
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Spicy Kick: For those who enjoy a bit of heat, sprinkle in some red pepper flakes or diced jalapeños. The heat balances nicely with the sweetness, adding an exciting zing to your feast.
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Savory Touch: Incorporate sautéed onions and garlic in the layers for an extra savory layer of flavor. This will elevate your Sweet Potato & Cranberry Gratin, making it even more irresistible.
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Fruit Twist: Consider mixing in some sliced apples or pears alongside the cranberries for a deliciously sweet addition that pairs wonderfully with sweet potato. Their juiciness creates an enchanting contrast that’s delightful!
Explore these tips and enhance your Sweet Potato & Cranberry Gratin experience! If you’re in the mood for more comforting recipes, check out Escabeche Sweet Sour for a tangy twist or Potato Egg Cheese for a hearty breakfast option!

Sweet Potato & Cranberry Gratin Recipe FAQs
What type of sweet potatoes should I use for this gratin?
Absolutely! For the best results, look for firm, smooth sweet potatoes without any dark spots or soft areas. Organic sweet potatoes often have more flavor. If you want to mix it up, butternut squash can be a fantastic substitute, bringing a slightly different sweetness and texture.
How long can I store Sweet Potato & Cranberry Gratin in the fridge?
You can keep leftovers stored in an airtight container in the fridge for up to 3 days. Just be sure to let it cool completely before sealing. Reheat it gently in the oven to bring back that deliciously creamy texture!
Can I freeze Sweet Potato & Cranberry Gratin?
Very! To freeze, wrap the cooled gratin tightly in plastic wrap followed by aluminum foil and store it for up to 3 months. When you’re ready to enjoy it, thaw it overnight in the fridge and reheat in a preheated oven at 350°F (175°C) for about 20-25 minutes until warmed through.
What if my sweet potatoes are not cooking evenly?
No worries! If you find your sweet potatoes are unevenly cooked, slice them thinner next time—aim for about 1/4 inch. It’s also helpful to make sure they’re boiled until fork-tender before layering in the gratin. This ensures a consistent texture throughout the dish.
Is there a substitute for heavy cream that’s dairy-free?
Certainly! For a vegan option, you can use coconut cream, which adds a wonderful richness. Make sure to use full-fat coconut milk for the best results. It’s creamy and will still give you that luxurious mouthfeel that complements the sweet potatoes and cranberries beautifully.
Can I adjust this recipe for allergies or dietary restrictions?
The more the merrier! You can easily adapt this Sweet Potato & Cranberry Gratin to meet various dietary needs. For a gluten-free version, simply swap in gluten-free breadcrumbs. To make it vegan, use coconut cream instead of heavy cream and plant-based cheese for the topping. Always check ingredient labels for potential allergens to ensure everyone can enjoy this comforting dish.

Sweet Potato & Cranberry Gratin: Comfort in Every Bite
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Peel and slice the sweet potatoes into thin rounds and boil for 10 to 15 minutes until fork-tender.
- Layer half of the boiled sweet potatoes in a greased 9x13-inch baking dish followed by half of the cranberries.
- In a bowl, whisk together the heavy cream, brown sugar, cinnamon, salt, and pepper. Pour half over the first layer.
- Add the remaining sweet potatoes, top with cranberries, and pour the rest of the cream mixture over it.
- Sprinkle the shredded Gruyère cheese and breadcrumbs on top.
- Bake for 30 to 35 minutes until bubbly and golden brown.
- Let cool for 5 minutes before serving.

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