This Sweet Potato Gratin is a delightful twist on the classic gratin, featuring layers of tender sweet potatoes, creamy Gouda and Parmesan cheeses, and aromatic thyme. It’s a perfect side dish for fall and winter meals, offering a harmonious blend of sweet and savory flavors.

FULL RECIPE:

Ingredients

• 2 pounds sweet potatoes, peeled and thinly sliced
• 1 cup heavy cream
• 1 cup milk
• 1 teaspoon salt
• 1/2 teaspoon freshly ground black pepper
• 1 tablespoon fresh thyme leaves
• 1 cup shredded Gouda cheese
• 1/2 cup grated Parmesan cheese

Directions

1. Preheat the oven to 400°F (200°C). Lightly grease a cast-iron skillet or baking dish.
2. In a bowl, combine the heavy cream and milk; set aside.
3. Arrange a layer of sweet potato slices in the prepared skillet. Drizzle with a few tablespoons of the cream mixture, season with salt, pepper, and thyme, and sprinkle with a portion of the Gouda and Parmesan cheeses.
4. Repeat the layering process with the remaining sweet potatoes, cream mixture, seasonings, and cheeses, forming 6-8 layers. Press down gently to ensure the potatoes are submerged in the cream mixture.
5. Cover the skillet with foil and bake for 30 minutes.
6. Remove the foil and continue baking for an additional 25-30 minutes, or until the sweet potatoes are tender and the top is golden and bubbly.
7. Let the gratin rest for a few minutes before serving.

Nutrition Facts

• Calories: Approximately 390
• Total Fat: 28g
• Saturated Fat: 17g
• Cholesterol: 95mg
• Sodium: 413mg
• Total Carbohydrates: 29g
• Dietary Fiber: 4g
• Sugars: 9g
• Protein: 8g

A Delicious Twist on a Classic Dish

Traditional gratin recipes typically feature white or russet potatoes layered with heavy cream, butter, and cheese. While undeniably delicious, sweet potato gratin offers a unique twist by incorporating the natural sweetness and vibrant orange hue of sweet potatoes. The contrast between the slightly caramelized edges, the velvety interior, and the gooey, melted cheese creates a dish that is both visually appealing and irresistibly delicious. What sets sweet potato gratin apart is the balance of flavors.

The Perfect Side Dish for Any Occasion

Sweet Potato Gratin is a versatile dish that can be served on a variety of occasions. It is particularly popular during the fall and winter months when sweet potatoes are in season and when comfort food becomes a staple in many households. Thanksgiving, Christmas, and other holiday celebrations often feature gratins as side dishes, making them a festive addition to the table. However, this dish is not just reserved for the holidays. It pairs well with roasted meats such as turkey, chicken, beef, and pork, making it an excellent choice for Sunday dinners or special family meals. For vegetarians, sweet potato gratin can also serve as a main course when paired with a fresh green salad or roasted vegetables.

The Nutritional Benefits of Sweet Potatoes

One of the key benefits of using sweet potatoes in a gratin is their impressive nutritional profile. Unlike regular potatoes, sweet potatoes are rich in fiber, vitamins, and antioxidants. They are an excellent source of Vitamin A, which is essential for eye health, immune function, and skin health. Additionally, they contain high levels of Vitamin C, potassium, and manganese, all of which contribute to overall well-being. Despite being naturally sweet, sweet potatoes have a lower glycemic index compared to white potatoes, which means they have a lesser impact on blood sugar levels. This makes sweet potato gratin a slightly healthier option for those looking to indulge in a creamy, cheesy dish without excessive guilt.

The Role of Cheese in Sweet Potato Gratin

Cheese plays a crucial role in elevating the flavor and texture of sweet potato gratin. The type of cheese used can significantly impact the taste, with options such as Gouda, Gruyère, Parmesan, and Cheddar being popular choices. Gouda adds a smooth and slightly nutty flavor, while Gruyère provides a deeper, more complex taste with hints of saltiness. Parmesan is often used for an extra umami kick and a crisp, golden topping that adds a slight crunch to the dish. The combination of cheese and cream creates a luxurious, melt-in-your-mouth experience. As the gratin bakes, the cheese melts into the layers of sweet potatoes, creating a gooey, cheesy interior while forming a beautifully golden crust on top. This textural contrast makes every bite incredibly satisfying.

Tips for the Best Sweet Potato Gratin

To achieve the perfect sweet potato gratin, there are a few key tips to keep in mind. First, slicing the sweet potatoes thinly and evenly is crucial for ensuring even cooking. Using a mandoline slicer can help achieve uniform slices, which will result in a consistent texture throughout the dish. Another important tip is to ensure that the gratin is adequately seasoned. Since sweet potatoes have a naturally mild sweetness, adding salt, pepper, and fresh herbs like thyme or rosemary enhances their flavor. A touch of garlic or nutmeg can also add warmth and depth to the dish. When layering the gratin, it’s essential to distribute the cheese and cream mixture evenly between each layer to create a well-balanced, creamy texture.

Variations and Customizations

One of the best aspects of sweet potato gratin is its adaptability. There are countless ways to customize the recipe to suit different preferences and dietary needs. For a lighter version, substituting heavy cream with half-and-half or a plant-based milk alternative can reduce the calorie content while maintaining creaminess. For those who enjoy a smoky flavor, adding a sprinkle of smoked paprika or using smoked Gouda can add depth to the dish. A hint of cinnamon or nutmeg can enhance the natural sweetness of the potatoes, making it a more dessert-like gratin. For a crunchier texture, some recipes include a breadcrumb topping mixed with Parmesan cheese and butter. This adds an extra layer of crispiness that contrasts beautifully with the creamy interior. Vegans can also enjoy a dairy-free version of sweet potato gratin by using cashew cream or coconut milk instead of dairy and nutritional yeast or vegan cheese for a cheesy flavor. The result is a rich and comforting dish that remains completely plant-based.

Conclusion

Sweet Potato Gratin is a dish that perfectly balances sweetness, creaminess, and savoriness, making it a delightful addition to any meal. Whether served during the holidays, alongside a Sunday roast, or as a vegetarian main course, this dish offers a satisfying and indulgent experience that appeals to a wide range of palates. Not only is it delicious, but it also provides nutritional benefits, thanks to the vitamin-rich sweet potatoes.