The aroma wafting from the kitchen transports me to festive gatherings filled with laughter and warmth, where every bite tells a story. One of my favorite go-to recipes for these occasions is Sweet Potato & Cranberry Gratin, blending the creamy richness of sweet potatoes with the tangy burst of cranberries. This easy holiday side dish not only delights the palate but also brings a splash of color to your table, making it a crowd-pleaser even among the pickiest eaters. In just a few simple steps, you’ll have a delectable dish that can be made vegan or gluten-free, perfect for accommodating all your guests. Ready to impress your loved ones with this delightful creation? Let’s dive in!

Why is this gratin a must-try?
Irresistible Flavors: The sweet and tart combination of sweet potatoes and cranberries creates a flavor profile that dances on your palate.
Versatile Dish: Whether you’re celebrating a festive gathering or simply enjoying a family dinner, this dish shines on any table.
Easy Preparation: With its simple steps, it’s perfect for busy cooks who want to create something special without hours in the kitchen.
Diet-Friendly Options: Easily adaptable to vegan or gluten-free diets, such as swapping heavy cream for coconut cream.
Crowd Appeal: This gratin is sure to impress even the pickiest eaters, making it a fantastic alternative to fast food. Pair it with a main course like Herb Roasted Potatoes for a well-rounded meal!
Sweet Potato & Cranberry Gratin Ingredients
For the Gratin
• Sweet Potatoes – Provides sweetness and structure. A great substitution is butternut squash for a different flavor profile.
• Cranberries – Adds tartness that balances the sweetness of the potatoes. If fresh cranberries are unavailable, frozen cranberries can be used after thawing and draining.
• Heavy Cream – Creates a creamy consistency. For a vegan option, replace with coconut cream.
• Brown Sugar – Enhances sweetness and caramelization.
• Cinnamon – Adds warmth and depth of flavor, perfect for enhancing the holiday spirit.
• Salt and Pepper – Essential for seasoning, elevating the overall taste.
• Gruyère Cheese – Contributes creaminess and a savory flavor. Alternatively, use cheddar, mozzarella, or feta for a tangy twist.
• Breadcrumbs – Provides a crunchy topping. For gluten-free options, substitute with crushed gluten-free crackers or ground nuts.
Remember, the Sweet Potato & Cranberry Gratin is versatile, allowing you to accommodate various dietary preferences while still impressing everyone at your gathering!
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 ensures that your Sweet Potato & Cranberry Gratin bakes evenly and achieves that perfect golden brown crust. As the oven warms up, gather your baking dish and prepare your ingredients for an efficient cooking experience.
Step 2: Prepare the Sweet Potatoes
Peel and slice the sweet potatoes into even rounds about 1/4 inch thick. In a large pot of boiling water, carefully add the sweet potato slices and boil for 10-15 minutes until tender, but not mushy. You’ll know they are ready when you can easily pierce them with a fork. Drain and set aside.
Step 3: Layer the Sweet Potatoes
In a greased baking dish, layer half of the boiled sweet potato slices, slightly overlapping them for a beautiful presentation. Ensure they are evenly distributed across the bottom of the dish, creating a solid foundation for your Sweet Potato & Cranberry Gratin.
Step 4: Add the Cranberries
Sprinkle half of the fresh cranberries evenly over the first layer of sweet potatoes. Their tartness will perfectly complement the sweetness of the potatoes, creating a balanced flavor. This layer of cranberries will add vibrant color and texture to your dish.
Step 5: Prepare the Cream Mixture
In a mixing bowl, whisk together the heavy cream, brown sugar, cinnamon, salt, and pepper until well combined. The cream mixture should be smooth and slightly thickened. Once ready, pour half of this mixture over the layered sweet potatoes and cranberries, ensuring even coverage.
Step 6: Repeat the Layers
Next, repeat the layering process with the remaining sweet potatoes and cranberries. Layer the rest of the sweet potato slices, followed by the remaining cranberries. Pour the remaining cream mixture over the top, allowing it to seep through the layers for additional creaminess.
Step 7: Add Cheese and Topping
Once the layers are complete, sprinkle shredded Gruyère cheese evenly across the top of your gratin. This cheese will melt beautifully and add a rich flavor. Follow with a generous layer of breadcrumbs to create a lovely, crunchy topping that contrasts with the creamy layers beneath.
Step 8: Bake to Perfection
Place your baking dish in the preheated oven and bake for 30-35 minutes. You’ll know it’s done when the top is golden brown and bubbly, with the cheese melted to perfection. This baking time allows all the flavors to meld together beautifully.
Step 9: Cool Before Serving
Once out of the oven, let the Sweet Potato & Cranberry Gratin cool for about 10 minutes. This cooling period will help the dish set, making it easier to serve. The aroma of this festive dish will surely entice your guests as you prepare to share it with them.

What to Serve with Sweet Potato & Cranberry Gratin
Complement your beautiful dish with delightful sides that enhance its flavors and create a memorable dining experience.
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Herb-Roasted Turkey: This savory centerpiece pairs perfectly, blending with the gratin’s sweetness while adding heartiness to your table. The tender, juicy meat complements the creamy texture, making every bite a celebration.
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Garlic Green Beans: Crisp-tender green beans sautéed with garlic add a fresh crunch that contrasts beautifully with the richness of the gratin. Their bright color and flavor balance the dish wonderfully.
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Cranberry Sauce: A classic pairing that amplifies the tart notes in the gratin, homemade cranberry sauce brings a sweet-tart vibrancy that will leave guests craving more.
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Quinoa Salad: Light and nutritious, a quinoa salad with citrus dressing adds a refreshing brightness that complements the gratin’s warmth. Its fluffiness provides a delightful texture contrast.
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Cheesy Garlic Bread: This indulgent side is perfect for mopping up any cheesy goodness left on the plate. Its crispy edge and ooey-gooey center are simply irresistible, adding a lovely comfort factor to your meal.
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Mulled Wine: Serve a warm, spiced mulled wine to echo the flavors of cinnamon and warmth already present in the gratin. Its cozy aroma will envelop your gathering, creating a festive atmosphere.
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Apple Crisp: Finish the meal on a sweet note with a warm apple crisp. The warm spices mirror those in the gratin, while the sweet dessert rounds out the meal beautifully with its crunchy topping and tender apples.
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Pumpkin Soup: A silky pumpkin soup as a starter sets the stage for your feast. Its rich, earthy flavor complements the gratin while inviting your guests into a comforting holiday spirit.
How to Store and Freeze Sweet Potato & Cranberry Gratin
Fridge: Keep covered in an airtight container for up to 3 days. Reheat in the oven at 350°F (175°C) until heated through for the best texture.
Freezer: For longer storage, freeze the gratin before baking for up to 2 months. Wrap well in plastic wrap and foil to prevent freezer burn.
Reheating: Thaw overnight in the fridge before baking. If reheating baked gratin, cover with foil to maintain moisture and heat at 350°F (175°C) for about 25-30 minutes.
Make-Ahead Tip: Prepare the Sweet Potato & Cranberry Gratin a day in advance and refrigerate before baking for a fuss-free holiday gathering.
Make Ahead Options
These Sweet Potato & Cranberry Gratin are perfect for meal prep enthusiasts looking to save time on busy holiday gatherings! You can prepare the entire dish up to 24 hours in advance by following these steps: after layering the sweet potatoes and cranberries and pouring the cream mixture, simply cover the baking dish with plastic wrap and refrigerate. This method helps the flavors meld beautifully without compromising on taste. When ready to serve, remove it from the fridge, sprinkle the cheese and breadcrumbs on top, and bake it straight from the refrigerator for 30-35 minutes, ensuring you have a deliciously warm gratin with minimal effort for your guests.
Sweet Potato & Cranberry Gratin Variations
Feel free to unleash your creativity and customize this recipe to suit your taste buds and dietary needs!
- Vegan Option: Use coconut cream and a dairy-free cheese alternative to make this dish suitable for plant-based eaters.
- Gluten-Free Twist: Substitute the breadcrumbs with crushed gluten-free crackers or ground nuts, adding texture without the gluten.
- Spiced Up: Incorporate warm spices like nutmeg or ginger for an autumnal flavor twist that will delight your senses.
- Nutty Crunch: Swap breadcrumbs with crushed pecans or walnuts for a delightful crunch that brings in nutty undertones. Imagine the rich flavors mingling beautifully!
- Herb Infusion: Add fresh herbs such as thyme or rosemary into the layers for a fragrant depth that transforms the dish. A sprinkle of fresh herbs really elevates the taste.
- Syrupy Sweet: Drizzle pure maple syrup over the layers for an extra sweet note that will caramelize beautifully during baking.
- Creamy Layers: Mix in some ricotta or cottage cheese with the cream for an extra creamy bite that blends seamlessly with the other flavors. It’s a rich experience!
- Savory Swap: Switch out Gruyère cheese with sharp cheddar for a bolder flavor that adds a nice kick.
Explore these options and check out other sides like Sweet Harmony Honey Glazed Corn Casserole or Chinese Sweet and Sour Pork to complement your festive meals wonderfully!
Expert Tips for Sweet Potato & Cranberry Gratin
- Pre-boil Sweet Potatoes: Ensure to pre-boil the sweet potatoes for 10-15 minutes to achieve even cooking and prevent a mushy texture.
- Allow to Cool: Let the gratin cool slightly before serving. This helps it set and makes for easier slicing and serving.
- Watch Baking Time: Keep a close eye on the oven towards the end of baking to prevent burning the top. Remove once it’s golden brown and bubbly.
- Make Ahead: To save time, assemble the entire Sweet Potato & Cranberry Gratin the day before and refrigerate; just pop it in the oven when ready to serve.
- Substitute Wisely: Use plant-based cream for a vegan option or experiment with different cheeses to find the flavor combination that resonates with your guests.

Sweet Potato & Cranberry Gratin Recipe FAQs
How do I select ripe sweet potatoes?
Absolutely! Look for sweet potatoes that are firm, smooth, and free from any dark spots or blemishes. The skin should have a vibrant orange color. If you find sweet potatoes with blemishes or soft spots, it’s best to avoid them, as they might indicate over-ripeness.
How long can I store the Sweet Potato & Cranberry Gratin in the fridge?
You can keep your Sweet Potato & Cranberry Gratin covered in an airtight container for up to 3 days. When you’re ready to enjoy it again, simply reheat in the oven at 350°F (175°C) until warmed through for the best texture.
Can I freeze the Sweet Potato & Cranberry Gratin?
Yes, you can! To freeze, prepare the gratin as directed but do not bake it. Cover it tightly in plastic wrap and then in foil to prevent freezer burn. It will keep well for up to 2 months. When you’re ready to bake it, thaw it overnight in the fridge and then bake according to the original instructions.
What should I do if the top of my gratin is browning too quickly during baking?
Very good question! If you notice the top is browning too quickly, you can simply cover the dish loosely with aluminum foil. This will reduce the direct heat on the top layer and allow the rest of the gratin to continue cooking without burning. Check on it frequently to ensure it doesn’t overcook!
Are there any dietary considerations I should know about, especially for allergies?
Definitely! This gratin can easily be made vegan and gluten-free. To make it dairy-free, substitute the heavy cream with coconut cream and use a plant-based cheese option. Additionally, for gluten-free diets, swap the breadcrumbs for crushed gluten-free crackers or ground nuts. Always check ingredient labels for potential allergens!
What’s the best way to reheat leftovers for optimal flavor and texture?
To reheat leftovers, preheat your oven to 350°F (175°C). If the gratin has been previously baked, cover it with foil to keep it moist and heat for about 25-30 minutes, until it’s warmed throughout. This will help maintain the creamy texture and prevent it from drying out. Enjoy!

Delicious Sweet Potato & Cranberry Gratin for Cozy Gatherings
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C).
- Peel and slice the sweet potatoes into even rounds about 1/4 inch thick. Boil in a large pot for 10-15 minutes until tender. Drain and set aside.
- In a greased baking dish, layer half of the boiled sweet potato slices.
- Sprinkle half of the fresh cranberries evenly over the first layer of sweet potatoes.
- In a mixing bowl, whisk together the heavy cream, brown sugar, cinnamon, salt, and pepper until well combined. Pour half of this mixture over the layered sweet potatoes and cranberries.
- Repeat the layering process with the remaining sweet potatoes and cranberries, pour the remaining cream mixture on top.
- Sprinkle shredded Gruyère cheese and breadcrumbs on top.
- Bake in the preheated oven for 30-35 minutes until golden brown and bubbly.
- Let the gratin cool for about 10 minutes before serving.

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