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Sweet Potato & Cranberry Gratin

When the crispness of autumn settles in, it brings along a bounty of flavors that makes us crave hearty, comforting dishes. Sweet potato and cranberry gratin is a perfect embodiment of that seasonal magic, featuring the earthy sweetness of roasted sweet potatoes beautifully layered with tart, jewel-like cranberries, all enveloped in rich, creamy goodness. Whether you’re looking to impress holiday guests or simply add a cozy touch to your family dinner, this dish is sure to steal the spotlight on any table.

Why Make This Recipe

The contrast of creamy textures and vibrant flavors makes this gratin a memorable addition to your culinary repertoire.
It’s an effortless yet elegant dish that pairs wonderfully with both festive meals and simple weeknight dinners.
Packed with seasonal ingredients, it brings a burst of color and nutrition to your plate, delighting both the eye and the palate.

How to Make Sweet Potato & Cranberry Gratin

Creating this sweet potato and cranberry gratin is a delightful journey that whisks you from prepping fresh ingredients to serving a beautifully baked dish. Follow this step-by-step guide to make your own scrumptious gratin at home.

Step 1: Gather Your Ingredients

To get started on this dreamy gratin, you’ll need the following ingredients:

2 large sweet potatoes, thinly sliced
1 cup heavy cream
1 cup fresh cranberries
1/2 cup grated cheese (such as Gruyère or Parmesan)
2 tablespoons butter
Salt and pepper to taste
1 teaspoon thyme (optional)

Step 2: Preheat the Oven

Begin by preheating your oven to 375°F (190°C). This is an important step as it ensures your gratin cooks evenly and achieves that lovely golden crust you’re looking for.

Step 3: Prepare the Baking Dish

While your oven heats up, take a baking dish and grease it generously with butter. This adds flavor and ensures that your gratin doesn’t stick to the dish, making for an easy cleanup.

Step 4: Layer the Sweet Potatoes

Arrange half of the thinly sliced sweet potatoes in the bottom of the prepared baking dish. Don’t rush this step — a nice, even layer will make for a visually appealing dish. Season the layer with a pinch of salt and pepper to enhance the flavors of the sweet potatoes.

Step 5: Add the Cranberries

Next, sprinkle half of the fresh cranberries over the layer of sweet potatoes. This addition of cranberries not only adds a beautiful pop of color but also provides a lovely tartness that balances the sweetness of the potatoes.

Step 6: Pour in the Heavy Cream

Drizzle half of the heavy cream over the first layer, ensuring even coverage so every bite will be rich and creamy.

Step 7: Repeat the Layers

Repeat the process with the remaining sweet potatoes and cranberries, layering them just as you did the first time. Pour the rest of the heavy cream over the top layer, allowing it to seep throughout the layers.

Step 8: Finish with Cheese and Thyme

For the final touch, sprinkle the grated cheese over the top of the gratin, and add thyme if you wish. The cheese will melt into a delightful golden crust, bringing an additional layer of flavor.

Step 9: Bake Covered, Then Uncovered

Cover the baking dish tightly with foil and place it in the preheated oven. Bake for 30 minutes to allow the sweet potatoes to begin softening. After 30 minutes, carefully remove the foil and bake for an additional 20-25 minutes. Keep a close eye on it — you’ll know it’s ready when the top is golden brown, and the sweet potatoes are tender.

Step 10: Cool and Serve

Once out of the oven, let it cool for a few minutes before serving. This waiting period allows the gratin to set, making for cleaner slices when you dish it out — but the aroma wafting through your kitchen will make that wait feel endless!

Storage Tips for Sweet Potato & Cranberry Gratin

If you find yourself with leftovers or simply want to make this dish ahead of time, here’s how to store your sweet potato and cranberry gratin properly:

Refrigerate for 3–4 days at or below 40°F (4°C).
For longer storage, freeze in an airtight container for up to 2 months. Thaw overnight in the refrigerator before reheating.
Reheat in the oven at 350°F (175°C) until warmed through, about 20-30 minutes.

Serving Suggestions for Sweet Potato & Cranberry Gratin

While this gratin shines as a star of any table, here are a few serving options to elevate your meal:

As a Side Dish: Pair this gratin with roasted turkey or chicken for Thanksgiving or holiday dinners. The combination of flavors will complement each other beautifully.
Vegetarian Feast: Serve alongside a seasonal salad with mixed greens, nuts, and a light vinaigrette to create a colorful vegetarian spread.
Comfort Food Night: This gratin is perfect as a comforting meal on its own, perhaps paired with a warm artisan bread to soak up the creamy goodness.

Tips to Make Sweet Potato & Cranberry Gratin

Here are a few quick tips to ensure your gratin turns out perfect:

Choose firm, vibrant sweet potatoes for the best flavor and texture.
Use fresh cranberries to get that delightful tartness; frozen ones tend to be mushy.
If you run out of heavy cream, whole milk can work in a pinch, but the richness won’t be quite the same.

Variations or Substitutions

If you’re feeling adventurous, consider these twists to put your spin on the classic recipe:

Instead of cranberries, try using thin slices of tart apples or pears for a different flavor profile. Their sweetness and acidity can transform the dish into a delightful autumn treat.
For a vegan version, substitute heavy cream with coconut cream and use plant-based cheese.

FAQs

Q: Can I make this ahead of time?

A: Absolutely! You can prepare the gratin up to the baking stage and refrigerate it for a day. Just cover it with foil to keep it fresh.

Q: Can I use sweet potato mash instead of slices?

A: While it’s possible, the texture will dramatically change. Keep the thin slices for a traditional gratin texture, but if you prefer mash, you can spread a layer on top.

Q: How do I ensure my sweet potatoes are tender?

Slice them thinly so they can cook evenly.
Bake covered for the initial stage to allow them to steam.

Nutritional Information

While enjoying your sweet potato and cranberry gratin, it’s good to be aware of its nutritional content. Here’s an approximate breakdown for one serving (assuming the recipe serves eight):

Calories: 300
Fat: 18g
Carbohydrates: 32g
Protein: 6g
Fiber: 4g
Sugar: 5g

This dish is nutritionally balanced, offering healthy carbs from the sweet potatoes along with protein from the cheese and a good dose of fiber.

Common Mistakes to Avoid

Creating a delicious gratin can be simple, but here are a few pitfalls to watch out for:

Overbaking: This can lead to dry sweet potatoes. Keep an eye on them during the last stages of baking.
Skipping the Seasoning: Don’t underestimate the power of salt and pepper — they elevate the flavors significantly.
Not letting it rest: Allowing it to cool for a few minutes helps the layers set and makes it easier to scoop.

With an array of vibrant colors and flavors, sweet potato and cranberry gratin is more than just a side dish—it’s a heartwarming staple that celebrates the best of seasonal ingredients. Whether you are serving it for a special occasion or indulging in a cozy family meal, this recipe will surely create cherished memories at your dining table. Enjoy creating this festive dish and embracing the bountiful flavors of fall!