As the vibrant colors of fall emerge, the kitchen becomes a magical space filled with warmth and nostalgia. This Sweet Potato & Cranberry Gratin is the perfect festive recipe to celebrate the season while keeping your cooking stress-free. With the natural sweetness of creamy sweet potatoes paired beautifully with the tartness of cranberries, this dish is not only a showstopper but also incredibly easy to whip up, making it the ideal holiday side dish for any gathering. Plus, its versatility allows you to tailor it to fit various dietary needs, whether you’re serving vegetarian guests or looking to impress with a vegan twist. Ready to elevate your holiday table with this delightful gratin? Let’s dive in!

Why is this gratin a holiday essential?
Comforting, this Sweet Potato & Cranberry Gratin is the ultimate cozy dish, perfect for family gatherings. Versatile, it effortlessly accommodates dietary needs, so everyone can enjoy! Flavorful layers of creamy sweet potatoes and tart cranberries create a festive harmony that delights every palate. Quick preparation ensures you spend less time in the kitchen and more time with loved ones. Finally, the glorious golden top gives this dish a stunning presentation, stealing the spotlight at any holiday feast. Whether you serve it alongside roasted meats or as a vegan delight, it’s sure to impress!
Sweet Potato & Cranberry Gratin Ingredients
-
For the Gratin Base
-
Sweet Potatoes – The star of the dish, offering natural sweetness and a creamy texture.
-
Fresh Cranberries – Provides a tart contrast that beautifully balances the sweetness. Substitution: Frozen cranberries can be used; just thaw and drain beforehand.
-
Heavy Cream – Contributes richness and creaminess; perfect for a decadent taste. Substitution: Use coconut cream for a vegan version.
-
Brown Sugar – Elevates the dish with added sweetness and depth.
-
Cinnamon – Infuses warmth and a hint of spice that complements the sweet potatoes.
-
Salt and Pepper – Essential for enhancing and bringing together all the flavors.
-
For the Topping
-
Gruyère Cheese – Melts to perfection, giving delightful flavor and texture. Substitution: Use cheddar for a richer taste, mozzarella for mild creaminess, or feta for tanginess.
-
Breadcrumbs – Adds a crunchy topping that contrasts with the creamy interior. Substitution: Use gluten-free breadcrumbs or crushed gluten-free crackers for a gluten-free option.
This Sweet Potato & Cranberry Gratin is a show-stopping addition to your holiday feast, elevating the meal while still being easy to prepare!
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 temperature will ensure even baking and help create that golden-brown top we all love in a Sweet Potato & Cranberry Gratin. Take a moment to gather your baking dish and grease it with a little butter or cooking spray to prevent sticking.
Step 2: Prepare the Sweet Potatoes
Peel and slice the sweet potatoes into thin rounds—aim for about 1/4 inch thick. In a large pot, bring water to a boil and carefully place the sweet potato slices in. Boil for 10-15 minutes until they’re tender but not falling apart. Once done, drain them well and set aside for layering.
Step 3: Layer the First Ingredients
Grab your greased baking dish and start layering! Arrange half of the boiled sweet potato slices at the bottom, overlapping them slightly for visual appeal. This base is crucial for the Sweet Potato & Cranberry Gratin, so make sure it’s even and looks inviting.
Step 4: Add the Cranberries
Next, sprinkle half of the fresh cranberries evenly over your first layer of sweet potatoes. These tart gems will provide a delicious contrast to the sweet potatoes, enhancing the flavor profile of the gratin. Enjoy the colorful sight as you continue building this delightful dish!
Step 5: Mix the Creamy Base
In a separate bowl, whisk together the heavy cream, brown sugar, cinnamon, salt, and pepper until combined. The mixture should be smooth and slightly thick. Pour about half of this creamy goodness evenly over the sweet potatoes and cranberries, ensuring everything is nicely coated.
Step 6: Repeat the Layering
Now it’s time to repeat! Layer the remaining sweet potato slices on top of the first two layers, followed by the remaining cranberries. Don’t forget to pour the rest of the cream mixture over this new layer, ensuring it seeps into the sweet potatoes and complements the sweetness of the cranberries.
Step 7: Add Toppings
To finalize your Sweet Potato & Cranberry Gratin, top the dish with a generous amount of shredded Gruyère cheese and a sprinkle of breadcrumbs. The cheese will melt beautifully, while the breadcrumbs will crisp up, giving you that perfect texture contrast we’re all aiming for.
Step 8: Bake to Perfection
Place your assembled gratin in the preheated oven and bake for 30-35 minutes. Keep an eye on it, as you’re looking for a golden-brown top and bubbling edges. The aroma will be irresistible, inviting everyone to gather around as it cooks to perfection.
Step 9: Cool and Serve
Once baked, remove the gratin from the oven and let it cool for a few minutes before serving. This brief cooling period allows the layers to settle, making it easier to scoop and serve. Trust me, your Sweet Potato & Cranberry Gratin is now ready to shine at your holiday table!

Make Ahead Options
These Sweet Potato & Cranberry Gratin are perfect for busy home cooks looking to save time during the holidays! You can assemble the entire dish up to 24 hours in advance; simply cover it tightly with plastic wrap and refrigerate. For optimal flavor, wait to add the breadcrumbs and cheese until just before baking. When ready to serve, preheat your oven and simply remove the dish from the fridge, top with your cheese and breadcrumbs, and bake for an additional 5-10 minutes if it’s been chilled. This preparation method keeps the gratin just as delicious and ensures you have more time to enjoy with loved ones!
What to Serve with Sweet Potato & Cranberry Gratin
As you prepare to bring a comforting and festive vibe to your holiday table, think of delightful add-ons that round out your meal experience.
-
Roasted Turkey: The juicy, savory flavors of roasted turkey complement the rich sweetness of the gratin perfectly, making a classic holiday pairing.
-
Sautéed Green Beans: Crisp-tender green beans can brighten up your plate, adding a fresh crunch and vibrant color that balances the creamy gratin.
-
Cranberry Sauce: A tangy cranberry sauce on the side enhances the dish’s flavors, reinforcing the tartness while offering a refreshing contrast.
-
Creamy Polenta: This soft, cheesy side offers a delightful texture that blends beautifully with the gratin’s creaminess, creating an extra layer of comfort.
-
Herbed Stuffing: The warm and aromatic herbs in stuffing harmonize with the sweet potato and cranberry flavors, making every bite a cozy holiday experience.
-
Cider-Glazed Carrots: Their natural sweetness and slight acidity from the cider will echo the sweetness of the gratin and add a beautiful pop of color.
-
Mulled Wine: This warming drink, infused with spices, offers a festive touch, perfectly complementing the holiday spirit of your meal.
-
Pumpkin Pie: For dessert, this classic holiday favorite adds a sweet finish that ties in with the flavors of your Sweet Potato & Cranberry Gratin.
Variations & Substitutions for Potato & Cranberry Gratin
Ready to make this delightful Sweet Potato & Cranberry Gratin your own? Dive into these customizable options that elevate your dish even more!
-
Vegan Option: Use coconut cream instead of heavy cream and skip the cheese for a completely plant-based version. This gives a lovely richness while keeping it vegan-friendly!
-
Gluten-Free Twist: Substitute regular breadcrumbs with gluten-free breadcrumbs or crushed gluten-free crackers for a crunchy topping. This way, everyone can enjoy it without worry!
-
Cheese Alternatives: Consider using cheddar for a sharp and rich flavor, mozzarella for meltiness, or feta for a tangy kick. Mixing different cheeses can create a delightful flavor complexity.
-
Flavor Boost: Add chopped fresh herbs like thyme or rosemary to the cream mixture for a fragrant layer of flavor. Herbs can elevate the dish and make it more aromatic!
-
Nutty Crunch: Swap out breadcrumbs for crushed nuts like pecans or walnuts, adding a nutty crunch to your gratin. This twist offers a delightful textural contrast that everyone will love!
-
Sweetness Variation: If you crave a bit more sweetness, mix in a tablespoon of maple syrup or honey along with the brown sugar. It will enhance the natural sweetness of the sweet potatoes and cranberries magnificently!
-
Spicy Kick: Add a pinch of cayenne pepper or red pepper flakes to the creamy mixture for a mild heat that adds intrigue without overpowering the dish. It’s a fun way to surprise your guests!
-
Mix of Fruits: Incorporate diced apples or pears along with the cranberries for a sweet and tart burst. This variation not only looks lovely but also adds a unique flavor profile to the gratin.
Feel free to explore these variations and enjoy the delightful journey of flavors in your Sweet Potato & Cranberry Gratin. For additional inspiration, check out our favorite recipes like Cranberry Orange Pecan Muffins or Garlic Butter Potatoes, which beautifully complement holiday meals!
Expert Tips for Sweet Potato & Cranberry Gratin
-
Preboil Sweet Potatoes: Ensure even cooking by boiling the sweet potatoes before layering; skipping this step can lead to uneven texture in your Sweet Potato & Cranberry Gratin.
-
Tartness Balance: Fresh cranberries add wonderful tartness, but if using frozen, thaw and drain them well to avoid excess moisture that can make the gratin soggy.
-
Cream Substitutes: For a lighter vegan option, swap heavy cream with coconut cream; it provides a similar richness and keeps the dish plant-based.
-
Layering Matters: For an appealing presentation, overlap sweet potato slices and distribute cranberries evenly—this creates visually beautiful layers and ensures everyone gets a taste in every scoop.
-
Watch the Baking Time: Keep an eye on the gratin as it bakes; the perfect golden-brown top is your cue that it’s ready!
-
Rest Before Serving: Allow the gratin to cool for a few minutes after baking; this lets the layers set, making serving easier and more elegant.
How to Store and Freeze Sweet Potato & Cranberry Gratin
Fridge: Store leftover gratin in an airtight container for up to 3 days. Simply reheat in the oven or microwave until warmed through.
Freezer: If you’d like to freeze the Sweet Potato & Cranberry Gratin, cover it tightly with plastic wrap and then foil, storing it for up to 2 months. Thaw in the fridge overnight before reheating.
Make-Ahead: This gratin can be assembled in advance and kept in the refrigerator for up to 24 hours before baking. This convenience makes holiday prep stress-free!
Reheating: When ready to serve leftovers, reheat in a 350°F (175°C) oven, covered with foil to prevent drying out, for about 20-25 minutes or until heated through.

Sweet Potato & Cranberry Gratin Recipe FAQs
How do I choose ripe sweet potatoes?
Absolutely! Look for sweet potatoes that are firm and have smooth skin with no dark spots or blemishes. Smaller to medium-sized potatoes usually have a sweeter taste and creamier texture than larger ones, which can be starchy.
Can I freeze sweet potato & cranberry gratin?
Yes, you can! To freeze, allow the gratin to cool completely. Then, cover it tightly with plastic wrap followed by aluminum foil. It can be stored in the freezer for up to 2 months. When you’re ready to enjoy it, thaw it in the refrigerator overnight before baking or reheating.
How long can I store leftovers?
Leftover Sweet Potato & Cranberry Gratin can be stored in an airtight container in the refrigerator for up to 3 days. Simply reheat it in the oven or microwave until warmed through, ensuring it retains its delicious flavors.
What can I do if the gratin is too watery?
If you find your gratin is watery, it may be due to excess moisture from the cranberries. Next time, make sure to thaw and drain frozen cranberries thoroughly before using. Additionally, you can sprinkle a bit more breadcrumbs on top before baking or even add a cornstarch slurry to the cream mixture to help absorb moisture.
Is this dish suitable for those with dairy allergies?
Definitely! You can easily make this Sweet Potato & Cranberry Gratin dairy-free by substituting heavy cream with coconut cream or another non-dairy milk alternative. Always check labels to ensure the alternatives are suitable for your dietary needs.
How can I make this dish gluten-free?
Very easily! Just substitute the regular breadcrumbs with gluten-free breadcrumbs or crushed gluten-free crackers. This small change allows everyone at your table to enjoy the gratin deliciously!

Decadent Potato & Cranberry Gratin for Cozy Holiday Feasts
Ingredients
Equipment
Method
- Preheat your oven to 375°F (190°C) and prepare your baking dish.
- Peel and slice the sweet potatoes into thin rounds. Boil for 10-15 minutes until tender.
- Layer half of the sweet potato slices in the greased baking dish.
- Sprinkle half of the fresh cranberries over the first layer.
- Whisk together heavy cream, brown sugar, cinnamon, salt, and pepper; pour over the layers.
- Repeat the layering with the remaining sweet potato slices and cranberries, pouring remaining cream mixture.
- Top with Gruyère cheese and breadcrumbs.
- Bake in the oven for 30-35 minutes until golden brown.
- Let cool for a few minutes before serving.

Leave a Reply