When the holiday season rolls around, the kitchen fills with the delicious aromas of roasted meats and sweet treats. It's a time for warmth, gatherings, and of course, standout side dishes! Enter my Sweet Potato & Cranberry Gratin-an easy-to-make delight that's sure to steal the spotlight at your festive table. This dish beautifully marries the rich creaminess of sweet potatoes with the tart burst of fresh cranberries, creating layers of flavor that dance in harmony.
Perfect for those of us looking to elevate our holiday spread without spending hours in the kitchen, this gratin is not only vegetarian but also offers a gluten-free option. It's a comforting, colorful addition that pairs wonderfully with any main course while being simple enough to prepare. Whether you whip it up for a cozy family dinner or a lively potluck, these vibrant layers are bound to become a seasonal favorite! So, let's get cooking-your holiday table awaits!

Why will Sweet Potato & Cranberry Gratin be a hit?
Simplicity at Its Best: With just a few wholesome ingredients, this gratin is straightforward to prepare, making it perfect for busy holiday cooks.
Vibrant Flavors: The sweet potatoes offer a creamy base, while cranberries contribute a delightful tartness that keeps each bite exciting.
Crowd-Pleasing Appeal: This dish is a showstopper that works well alongside various main courses, making it suitable for any gathering.
Customizable Options: Whether you’re a vegetarian or simply looking for gluten-free alternatives, this recipe can easily adapt to your guests’ preferences.
Make-Ahead Magic: Assemble it a day in advance to enhance the flavors and minimize kitchen stress on the big day-an easy way to impress your loved ones!
Sweet Potato & Cranberry Gratin Ingredients
For the Gratin
- Sweet Potatoes - Provide the creamy base of the dish; peel and slice thinly for even cooking.
- Fresh Cranberries - Add a burst of tart flavor; can be replaced with thawed frozen cranberries if needed.
- Heavy Cream - Ensures a rich, creamy texture; for a vegan option, substitute with coconut cream.
- Brown Sugar - Enhances sweetness; adjust to your taste for the perfect balance.
- Cinnamon - Adds a warm touch that elevates the flavor profile.
- Salt & Pepper - Essential for seasoning; use to enhance and round out the flavors.
- Gruyère Cheese - Provides a deliciously cheesy topping; feel free to swap for Cheddar, Mozzarella, or Feta.
- Breadcrumbs - Offers a crunchy finish; can be replaced with gluten-free crumbs or crushed nuts for a gluten-free option.
Enjoy preparing this Sweet Potato & Cranberry Gratin - Easy Holiday Side Dish that will surely delight at your festive table!
How to Make Sweet Potato & Cranberry Gratin
Preheat the oven: Start by preheating your oven to 375°F (190°C). This ensures that your gratin will bake evenly, resulting in that perfect golden brown crust.
Prepare sweet potatoes: Peel and slice the sweet potatoes thinly, then boil them in water for 10-15 minutes. You want them tender but not mushy-just enough to make layering easy!
Layer sweet potatoes: Drain the sweet potatoes and place half of them in a greased baking dish. Spread them out evenly for consistent cooking.
Add cranberries: Sprinkle half of the fresh cranberries over the layer of sweet potatoes. This tart addition is what makes this dish shine!
Mix cream mixture: In a bowl, combine the heavy cream, brown sugar, cinnamon, salt, and pepper. Pour half of this luscious mixture over the layered sweet potatoes and cranberries.
Repeat layers: Layer the remaining sweet potatoes and cranberries on top, followed by pouring the rest of the cream mixture evenly over everything.
Top with cheese and breadcrumbs: Finally, sprinkle the shredded Gruyère cheese and breadcrumbs over the top. This will give a delightful crunchy texture once baked!
Bake to perfection: Place the dish in the oven and bake for 30-35 minutes until the top is golden brown and bubbly. Let it cool slightly before serving to lock in those delicious flavors.
Optional: Garnish with fresh herbs like thyme or parsley for a pop of color.
Exact quantities are listed in the recipe card below.

Expert Tips
• Preheat Properly: Preheating the oven to 375°F (190°C) is crucial for achieving that perfectly golden and bubbly topping on your Sweet Potato & Cranberry Gratin.
• Layer Evenly: When layering the sweet potatoes and cranberries, ensure even distribution for a consistent flavor throughout the dish-no bite should be left without that delicious balance!
• Make Ahead: Assembling the gratin a day prior not only enhances its flavors but also makes holiday meal prep significantly easier, allowing you more time with loved ones.
• Adapt Cheese Choices: If Gruyère isn’t available, consider using Cheddar, Mozzarella, or Feta. Each variation will provide its own unique flavor profile to this easy holiday side dish.
• Avoid Soggy Bottoms: Make sure not to overboil the sweet potatoes; they should be tender yet firm to hold their shape during baking.
How to Store and Freeze Sweet Potato & Cranberry Gratin
Fridge: Store leftover Sweet Potato & Cranberry Gratin in an airtight container for up to 3 days. Reheat gently in the oven or microwave before serving to keep it creamy.
Freezer: If you want to freeze, wrap the gratin tightly in plastic wrap and then in aluminum foil. It will keep well for up to 2 months. Thaw overnight in the fridge before reheating.
Reheating: When reheating, consider adding a splash of cream or milk to restore its creaminess and prevent drying out. Bake at 350°F (175°C) until heated through.
Make-Ahead: Assemble the gratin a day in advance and store in the fridge before baking. This not only saves time but also enhances the flavor.
What to Serve with Sweet Potato & Cranberry Gratin?
As you plan your holiday feast, consider delightful accompaniments that will create a memorable dining experience.
Roasted Turkey: The savory flavors of roasted turkey pair beautifully with the sweet and tart notes of the gratin, making for a festive meal.
Maple-Glazed Brussels Sprouts: These tender sprouts add a touch of sweetness and crunch that complements the creaminess of the gratin effortlessly.
Honey-Balsamic Glazed Carrots: The glossy finish and sweet-tart flavor of these carrots harmonize splendidly with the layers of sweet potato and cranberry.
Cranberry Sauce: A bright, tangy cranberry sauce not only enhances the gratin but also ties together the season's flavors, making for a cohesive meal.
Herb-Infused Stuffing: With its herby aroma and fluffy texture, stuffing offers a comforting contrast to the creamy layers of the gratin, enriching your holiday spread.
Savory Mushroom Risotto: Creamy risotto adds a rich texture and earthy flavor that pairs beautifully, bridging the sweet potato and cranberry elements.
Mulled Wine: The warm spices of mulled wine create a cozy drinking experience that resonates with the flavors of your holiday dishes.
Pumpkin Pie: A classic pumpkin pie for dessert concludes your meal on a high note, echoing the festive flavors in the gratin while providing a sweet finish.
Each of these pairing options enhances the celebration while showcasing the delightful flavors of your Sweet Potato & Cranberry Gratin - Easy Holiday Side Dish!
Make Ahead Options
These Sweet Potato & Cranberry Gratin are perfect for meal prep enthusiasts! You can assemble the dish up to 24 hours in advance, allowing the flavors to meld beautifully overnight. Simply follow the steps to layer the sweet potatoes and cranberries, then cover the baking dish tightly with foil and refrigerate. This not only saves you time on busy holiday cooking days but also ensures your gratin is just as delicious when baked. When you’re ready to serve, you can bake it straight from the fridge for about 40-45 minutes until golden and bubbly, adding a few extra minutes if baking from cold. Enjoy this easy holiday side dish with less stress!
Sweet Potato & Cranberry Gratin Variations
Customize your dish with these fun and delicious ideas to suit your taste and dietary needs!
- Dairy-Free: Substitute heavy cream with coconut cream for a plant-based alternative that still delivers creaminess.
- Gluten-Free Crunch: Use crushed gluten-free crackers instead of breadcrumbs for a crunchy topping that's perfect for gluten-sensitive guests.
- Nutty Flavor Boost: Add a layer of chopped walnuts or pecans in between the sweet potato and cranberry layers for added texture and flavor.
- Sweet Twist: Mix in a layer of diced apples or pears to bring an additional sweetness and a hint of fruity flavor.
- Herb Infusion: Toss in fresh herbs like thyme or rosemary with the cranberries for an aromatic depth that elevates the dish.
- Spicy Kick: Add a pinch of cayenne pepper or sprinkle red pepper flakes into your cream mixture for a fun spicy twist.
- Cheese Lovers: Swap Gruyère for a strong Cheddar or even Brie for a more pronounced cheese flavor that will melt beautifully over the top.
- Vegetable Medley: Layer in thin slices of zucchini or butternut squash along with the sweet potatoes for a colorful, nutrient-packed variation.

Sweet Potato & Cranberry Gratin Recipe FAQs
What type of sweet potatoes should I use?
Absolutely! Look for firm, smooth sweet potatoes without any dark spots or blemishes. Varieties like Garnet or Jewel sweet potatoes are great choices for their natural sweetness and creamy texture, making your Sweet Potato & Cranberry Gratin even more delicious.
How should I store leftovers of the gratin?
Leftover Sweet Potato & Cranberry Gratin can be stored in an airtight container in the refrigerator for up to 3 days. When ready to enjoy, gently reheat in the oven at 350°F (175°C) or in the microwave until warmed through. Adding a splash of cream can help restore its creamy texture!
Can I freeze Sweet Potato & Cranberry Gratin?
Very! To freeze, wrap your gratin tightly in plastic wrap and then in foil to prevent freezer burn. It will keep well in the freezer for up to 2 months. When you’re ready to enjoy it, thaw it overnight in the fridge and reheat in the oven, adding a bit of cream to keep it moist.
What should I do if my gratin is too watery?
No worries! If your gratin comes out a bit watery, it might be due to over-boiling the sweet potatoes. In the future, boil them just until tender but still firm. If it happens, consider serving it in a dish with a slotted spoon to avoid excess liquid.
Are there any dietary considerations for this dish?
Absolutely! This Sweet Potato & Cranberry Gratin is vegetarian-friendly and can easily be adapted for gluten-free diets by using gluten-free breadcrumbs or nuts instead. Just make sure your condiments (like the brown sugar and cream) are also gluten-free.
Can I make this dish vegan?
Yes! To make a vegan version of Sweet Potato & Cranberry Gratin, simply substitute the heavy cream with coconut cream and choose a dairy-free cheese option or skip the cheese altogether. You'll still have a delightful and creamy dish that offers great flavor.

Irresistibly Easy Sweet Potato & Cranberry Gratin for Holidays
Ingredients
Equipment
Method
- Preheat the oven to 375°F (190°C) to ensure even baking.
- Peel and slice the sweet potatoes thinly, then boil them for 10-15 minutes until tender.
- Drain and layer half of the sweet potatoes 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 bowl, then pour half over the layers.
- Repeat with remaining sweet potatoes and cranberries, followed by remaining cream mixture.
- Top with Gruyère cheese and breadcrumbs.
- Bake for 30-35 minutes until golden brown and bubbly. Let cool slightly before serving.

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