As I gazed at the vibrant colors of autumn leaves outside my window, I was inspired to create something equally beautiful in the kitchen: Sweet Potato & Cranberry Gratin. This dish marries the earthy sweetness of roasted sweet potatoes with the zesty pop of cranberries, making it the perfect festive vegetarian delight. Not only is it a showstopper for holiday gatherings, but it’s also refreshingly quick to prepare, giving you more time to enjoy the season’s magic with loved ones. With its comforting textures and inviting aroma, this gratin is bound to impress and satisfy any palate. Curious how you can whip up this delightful side dish that’s both crowd-pleasing and ready in under an hour? Let’s dive into the recipe!

Why Choose Sweet Potato & Cranberry Gratin?
Deliciously Festive: This dish marries the earthy sweetness of sweet potatoes with the tartness of cranberries, creating a perfect balance of flavors for your holiday table.
Super Easy Preparation: With minimal prep and cooking time, you can serve a spectacular side without spending hours in the kitchen.
Versatile Enjoyment: Whether you’re hosting a big holiday dinner or enjoying a cozy family meal, this gratin serves as a fantastic addition. Pair it with [Potatoes Gratin Steals] for an unforgettable feast!
Diet-Friendly Options: Easily adjust this recipe to fit gluten-free or vegan diets, allowing everyone at your table to savor this delightful dish.
Crowd-Pleasing Comfort: With its creamy texture and crispy topping, this Sweet Potato & Cranberry Gratin offers a comforting experience that will leave your guests asking for seconds!
Sweet Potato & Cranberry Gratin Ingredients
For the Gratin
- Sweet Potatoes – Provides the base with natural sweetness; peel and slice for even cooking.
- Cranberries – A tart burst of flavor to balance sweetness; use fresh or thawed frozen cranberries.
- Heavy Cream – Creates a rich texture; swap with coconut cream for a vegan alternative.
- Brown Sugar – Enhances sweetness and depth; can be omitted for a healthier version.
- Cinnamon – Adds warmth; optional based on your flavor preference.
- Salt and Pepper – Essential for bringing all flavors together.
- Gruyère Cheese – Melts beautifully for a creamy topping; replace with Cheddar or Mozzarella as desired.
- Breadcrumbs – For a crunchy golden crust; use gluten-free breadcrumbs or crushed nuts for dietary adjustments.
Feel free to explore this Sweet Potato & Cranberry Gratin as a star side dish at your next holiday festivity!
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 as it ensures that your Sweet Potato & Cranberry Gratin will cook evenly and develop a delightful golden crust. While the oven heats up, gather your ingredients and prepare your baking dish by lightly greasing it with cooking spray or butter.
Step 2: Boil the Sweet Potatoes
Peel and slice the sweet potatoes into ¼-inch thick rounds for even cooking. Place them into a large pot of boiling water and cook for approximately 10-15 minutes, or until they are tender but not falling apart. A fork should slide easily through the slices. Once done, drain the sweet potatoes and let them cool for a few minutes.
Step 3: Layer the Sweet Potatoes
Arrange half of the boiled sweet potato slices in the greased baking dish, overlapping them slightly to create an even first layer. This base will help form the structure of your Sweet Potato & Cranberry Gratin. Ensure the layers look visually appealing, as this dish is as much about presentation as it is about flavor.
Step 4: Add the Cranberries
Sprinkle half of the cranberries over the first layer of sweet potatoes. The tartness of the cranberries will provide a delightful contrast to the sweetness of the potatoes. Make sure to distribute them evenly for a balanced flavor in every bite.
Step 5: Mix the Cream Mixture
In a medium bowl, combine heavy cream, brown sugar, cinnamon, salt, and pepper. Whisk until the mixture is well combined and smooth. Pour half of this creamy mixture evenly over the first layer of sweet potatoes and cranberries, ensuring each layer is well-coated to enhance the flavors.
Step 6: Repeat the Layering Process
Now, repeat the layering process with the remaining sweet potato slices and cranberries. Start with the sweet potatoes, then add the last bit of cranberries on top. Pour the rest of the cream mixture over these layers, allowing it to seep into the ingredients below, creating a luscious, flavorful gratin.
Step 7: Top with Cheese and Breadcrumbs
Sprinkle a generous layer of shredded Gruyère cheese over the top of the gratin, followed by a handful of breadcrumbs. This topping will create a golden, crispy crust while baking, adding texture to your Sweet Potato & Cranberry Gratin. Ensure even coverage for a beautifully baked finish.
Step 8: Bake to Perfection
Place the baking dish in your preheated oven and bake for 30-35 minutes. Keep an eye on it, and look for a golden brown crust and bubbly filling as indicators of doneness. The aroma will fill your kitchen, signaling that your Sweet Potato & Cranberry Gratin is nearly ready to serve.
Step 9: Cool and Serve
Once baked, remove the gratin from the oven and let it cool for about 5-10 minutes before serving. This resting time allows the layers to set, making it easier to cut and serve. Your family and friends are sure to be impressed by this festive and flavorful dish!

Expert Tips for Sweet Potato & Cranberry Gratin
-
Perfectly Tender Potatoes: Ensure sweet potatoes are tender before layering; if they’re too firm, they won’t cook evenly in the oven.
-
Baking Watch: Keep an eye on your gratin while baking; it should be golden brown and bubbling to ensure the best texture and flavor.
-
Drain Cranberries: If using frozen cranberries, be sure to drain them well to prevent excess moisture from making the gratin soggy.
-
Layering Evenly: When layering, arrange sweet potatoes and cranberries evenly; this creates a beautiful presentation and balanced flavors in every bite.
-
Tweaking for Taste: Feel free to adjust the amount of brown sugar and cinnamon according to your sweetness preference; your Sweet Potato & Cranberry Gratin should be just right for your palate!
Sweet Potato & Cranberry Gratin Variations
Feel free to let your creativity shine while preparing this delicious gratin, ensuring it perfectly fits your family’s tastes and dietary needs!
-
Vegan Option: Use coconut cream and a plant-based cheese alternative to keep all the creaminess while staying dairy-free. Your friends won’t even notice the difference!
-
Gluten-Free: Swap out regular breadcrumbs for gluten-free breadcrumbs or crushed nuts to create that coveted crispy topping without any gluten concerns. This twist can make it a hit among gluten-sensitive guests!
-
Cheese Swap: Try using Cheddar for a sharper flavor or Feta for a tangy twist in place of Gruyère. Both options add a unique depth to your dish!
-
Herb Infusion: Mix in fresh herbs like thyme or rosemary to the cream mixture for an aromatic boost that enhances the overall flavor profile and brings a lovely earthy note.
-
Extra Crunch: For a delightful texture variation, toss some chopped walnuts or pecans into the breadcrumbs before sprinkling them on top. This added crunch is bound to surprise and please!
-
Maple Sweetness: Replace brown sugar with pure maple syrup for a richer, more complex sweetness that beautifully complements the sweet potatoes. This delightful variation will remind you of cozy fall evenings.
-
Spicy Kick: For those who prefer a little heat, add a pinch of cayenne pepper or paprika to your cream mixture. This spicy twist will give your gratin an unexpected and exciting flavor.
-
Berry Bliss: Combine cranberries with other berries, such as blueberries or raspberries, for an unexpected sweet and tart mix that introduces a burst of color and flavor to your dish.
Let your Sweet Potato & Cranberry Gratin become a canvas for your culinary creativity, and happy cooking! For more inspiration on festive sides, check out our collection of delicious ideas here.
What to Serve with Sweet Potato & Cranberry Gratin
Looking to create a memorable meal that complements the comforting flavors of your gratin?
-
Herb-Roasted Turkey: Perfectly complements the earthy sweetness of the gratin, making for a classic holiday combo. The rich, savory flavors of the turkey offer a delightful contrast.
-
Garlic Green Beans: Fresh, crisp green beans sautéed with garlic add crunch and brightness to your plate, enhancing the sweet and creamy characters of the gratin.
-
Cranberry Almond Salad: A robust salad with tart cranberries and crunchy almonds provides a refreshing balance, pairing beautifully with the richness of the gratin.
-
Stuffed Acorn Squash: This dish brings seasonal spices that echo the flavors in the gratin while introducing delightful texture contrasts. It’s a feast for the eyes and palate!
-
Roasted Brussels Sprouts: The nutty flavor of Brussels sprouts, enhanced by a hint of balsamic glaze, pairs perfectly with the sweet notes of the gratin, creating balance in every bite.
-
Sparkling Cider: A fizzy, light drink that complements the rich, sweet flavors beautifully. It’s festive and refreshing, perfect for any holiday gathering.
-
Pumpkin Pie: Ending your meal with a slice of homemade pumpkin pie adds a traditional touch while echoing the fall flavors in your Sweet Potato & Cranberry Gratin.
-
Cheese Board: Curate a selection of creamy cheeses and fresh fruits, allowing guests to enjoy a variety of textures and flavors that harmonize with the gratin.
Enhancing your dining experience with these delightful sides and drinks will make your holiday gathering truly unforgettable!
How to Store and Freeze Sweet Potato & Cranberry Gratin
Fridge: Keep leftover Sweet Potato & Cranberry Gratin in an airtight container for up to 3 days. Reheat in the oven at 350°F (175°C) until warm, about 20 minutes.
Freezer: Freeze the assembled, unbaked gratin by wrapping it tightly in plastic wrap, then foil. It can be stored for up to 2 months. Thaw overnight in the fridge before baking.
Reheating: For reheating previously baked gratin, cover with foil to retain moisture, and warm in the oven at 350°F (175°C) for about 25 minutes or until heated through.
Make-Ahead: You can assemble the gratin a day ahead and store it in the fridge before baking. This allows for convenient prep ahead of your holiday feast!
Make Ahead Options
Preparing your Sweet Potato & Cranberry Gratin in advance is a fantastic way to save time on busy holiday occasions! You can assemble the entire dish up to 24 hours beforehand by layering the sweet potatoes and cranberries, then pouring the cream mixture over them. Cover the baking dish tightly with plastic wrap and refrigerate to maintain freshness. When you’re ready to bake, simply remove it from the fridge, add the cheese and breadcrumbs, and pop it into the preheated oven. This method not only enhances the flavors but also ensures your gratin is just as delicious when ready to serve, making mealtime seamless and stress-free!

Sweet Potato & Cranberry Gratin Recipe FAQs
What should I look for when selecting sweet potatoes?
Absolutely! When choosing sweet potatoes, opt for ones that are firm with smooth skin, avoiding any that have dark spots or blemishes. If you’re planning to use this recipe soon, choose medium-sized sweet potatoes, as they tend to be sweeter and more flavorful.
How do I store leftover Sweet Potato & Cranberry Gratin?
To keep your Sweet Potato & Cranberry Gratin fresh, store it in an airtight container in the refrigerator for up to 3 days. Reheat in the oven at 350°F (175°C) for about 20 minutes, covered with foil to retain moisture.
Can I freeze Sweet Potato & Cranberry Gratin?
Very! You can freeze the assembled, unbaked gratin. Wrap it tightly in plastic wrap and then in foil to prevent freezer burn. It can be stored for up to 2 months. When you’re ready to bake, thaw it overnight in the fridge and then bake as directed.
What if my cranberries are frozen?
If you’re using frozen cranberries, be sure to thaw and drain them well to prevent excess moisture from making your gratin soggy. After draining, pat them dry with a paper towel to help absorb any remaining moisture before layering them in the dish.
Is this Sweet Potato & Cranberry Gratin safe for those with dietary restrictions?
Certainly! This gratin can be easily adapted for various dietary needs. To make it vegan, substitute heavy cream with coconut cream, and use plant-based cheese. For a gluten-free version, replace traditional breadcrumbs with gluten-free alternatives or crushed nuts. Always check labels for allergens to ensure safety.

Sweet Potato & Cranberry Gratin for a Cozy Holiday Feast
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C) and prepare your baking dish.
- Peel and slice the sweet potatoes into ¼-inch thick rounds and boil for 10-15 minutes.
- Layer half of the boiled sweet potato slices in the greased baking dish.
- Sprinkle half of the cranberries over the first layer of sweet potatoes.
- Mix together heavy cream, brown sugar, cinnamon, salt, and pepper, and pour half over the layers.
- Repeat layering with remaining sweet potatoes, cranberries, and the cream mixture.
- Top with shredded Gruyère cheese and breadcrumbs.
- Bake for 30-35 minutes until golden brown and bubbly.
- Let cool for 5-10 minutes before serving.

Leave a Reply