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Why You'll Love This sweet potato and kale gratin with creamy cheese sauce
- Easy to Make: This recipe requires just a few ingredients and some basic kitchen equipment, making it perfect for a weeknight dinner.
- Customizable: You can adjust the amount of kale and cheese to your liking, and even add other ingredients, such as diced ham or bacon, to make the dish your own.
- Nourishing: Sweet potatoes are a great source of fiber, vitamins, and minerals, while kale is packed with antioxidants and other nutrients.
- Impressive: This dish is perfect for a dinner party, as it's sure to impress your guests with its creamy, cheesy goodness.
- Make-Ahead: You can prepare this recipe up to 2 days in advance, making it perfect for busy weeknights.
- Freezer-Friendly: This dish freezes beautifully, so you can make it ahead of time and thaw it out when you need it.
- Comforting: This recipe is the perfect comfort food, with its creamy cheese sauce and tender sweet potatoes.
- Delicious: This dish is absolutely delicious, with a perfect balance of flavors and textures.
Ingredient Breakdown
The key ingredients in this recipe are sweet potatoes, kale, cheddar cheese, heavy cream, and butter. The sweet potatoes provide a natural sweetness and a lovely texture, while the kale adds a burst of freshness and nutrition. The cheddar cheese is the star of the show, providing a rich, creamy sauce that binds the whole dish together. The heavy cream adds a luxurious touch, while the butter provides a hint of richness and flavor. When selecting these ingredients, be sure to choose sweet potatoes that are firm and free of blemishes, and kale that is fresh and has a nice, deep green color. You can also use other types of cheese, such as Gruyère or Parmesan, if you prefer.
How to Make sweet potato and kale gratin with creamy cheese sauce
Preheat your oven to 400°F (200°C). This will ensure that your gratin cooks evenly and at the right temperature.
Peel and slice the sweet potatoes into 1/4-inch thick rounds. This will help them cook evenly and prevent them from becoming too mushy.
Heat a tablespoon of butter in a large skillet over medium heat. Add the kale and cook until it's wilted and tender, about 5 minutes. This will help bring out the natural sweetness of the kale and add a nice texture to the dish.
In a medium saucepan, melt 2 tablespoons of butter over medium heat. Add 1/2 cup of all-purpose flour and whisk to combine. Cook for 1-2 minutes, or until the mixture is lightly golden and has a nutty aroma. Slowly pour in 1 cup of heavy cream, whisking constantly to prevent lumps. Bring the mixture to a simmer and cook until it thickens, about 5 minutes. Remove from heat and stir in 1 cup of grated cheddar cheese until melted and smooth.
In a 9x13-inch baking dish, create a layer of sweet potatoes. Top with a layer of kale, followed by a layer of cheese sauce. Repeat this process until all of the ingredients have been used, finishing with a layer of cheese sauce on top.
Cover the dish with aluminum foil and bake for 30 minutes. Remove the foil and continue baking for an additional 20-25 minutes, or until the top is golden brown and the sweet potatoes are tender.
Tips for Perfect Results
The quality of the cheese will greatly impact the flavor of the dish. Choose a high-quality cheddar cheese that is rich and creamy.
Kale can quickly become overcooked and mushy. Cook it until it's just wilted, then remove it from the heat.
Choose sweet potatoes that are high in moisture, such as Yukon Gold or ruby red. These will yield a sweeter and creamier gratin.
Add some crunch to the dish by topping it with toasted breadcrumbs or chopped nuts. This will add a nice texture and visual appeal to the dish.
While cheddar cheese is a classic choice for this dish, you can also experiment with other types of cheese, such as Gruyère or Parmesan. This will give the dish a unique flavor and texture.
This dish can be made ahead of time and refrigerated or frozen until ready to bake. This makes it a great option for busy weeknights or special occasions.
Add some fresh herbs, such as thyme or rosemary, to the dish for a burst of flavor and fragrance. This will elevate the dish and make it more interesting.
Choose a baking dish that is large enough to hold all of the ingredients, but not so large that the gratin becomes too thin. A 9x13-inch dish is a good size for this recipe.
Common Mistakes to Avoid
-
Overcooking the Sweet Potatoes:
Fix: Check the sweet potatoes regularly while they're baking, and remove them from the oven when they're tender but still slightly firm.
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Not Using Enough Cheese:
Fix: Use a generous amount of cheese, and make sure to sprinkle it evenly over the top of the gratin.
-
Not Preheating the Oven:
Fix: Make sure to preheat the oven to the correct temperature before baking the gratin. This will ensure that it cooks evenly and at the right temperature.
-
Not Letting the Gratin Rest:
Fix: Let the gratin rest for 10-15 minutes before serving. This will allow the flavors to meld together and the cheese to set.
Variations & Substitutions
Add some diced jalapeños or red pepper flakes to the cheese sauce for a spicy kick.
Experiment with different types of cheese, such as Gruyère, Parmesan, or feta, to give the dish a unique flavor.
Add some fresh herbs, such as thyme or rosemary, to the dish for a burst of flavor and fragrance.
Experiment with different sweet potato varieties, such as Yukon Gold or ruby red, to give the dish a unique flavor and texture.
Add some toasted breadcrumbs or chopped nuts to the top of the gratin for a crunchy texture.
Add some cooked chicken, bacon, or ham to the dish to make it a hearty main course.
Storage & Make-Ahead
The gratin can be stored at room temperature for up to 2 hours. After that, it's best to refrigerate or freeze it to prevent bacterial growth.
The gratin can be refrigerated for up to 3 days. Let it come to room temperature before serving, or reheat it in the oven or microwave.
The gratin can be frozen for up to 3 months. Thaw it overnight in the refrigerator, then reheat it in the oven or microwave.
Frequently Asked Questions
Can I make this ahead of time?
Yes! You can prepare this recipe up to 2 days in advance. Store it covered in the refrigerator and bring to room temperature before serving. The flavors actually improve as they meld together overnight.
Can I freeze this recipe?
Yes! This recipe freezes beautifully. Simply assemble the gratin, cover it with plastic wrap or aluminum foil, and freeze for up to 3 months. Thaw overnight in the refrigerator, then reheat in the oven or microwave.
What type of cheese is best for this recipe?
Cheddar cheese is a classic choice for this recipe, but you can also experiment with other types of cheese, such as Gruyère or Parmesan. The key is to choose a cheese that melts well and has a rich, creamy flavor.
Can I use different types of sweet potatoes?
Yes! You can use different types of sweet potatoes, such as Yukon Gold or ruby red, to give the dish a unique flavor and texture. Just be sure to choose sweet potatoes that are high in moisture, as they will yield a sweeter and creamier gratin.
How do I prevent the gratin from becoming too dry?
To prevent the gratin from becoming too dry, make sure to cover it with aluminum foil during the first 30 minutes of baking. This will help retain moisture and prevent the top from becoming too brown. You can also add a splash of cream or milk to the cheese sauce to give it a richer, creamier texture.
Can I make this recipe in a slow cooker?
Yes! You can make this recipe in a slow cooker. Simply assemble the gratin, cover it with the lid, and cook on low for 3-4 hours or on high for 1-2 hours. This is a great option for busy weeknights or special occasions.
How do I reheat the gratin?
To reheat the gratin, simply place it in the oven at 350°F (180°C) for 15-20 minutes, or until it's hot and bubbly. You can also reheat it in the microwave, but be careful not to overheat it, as this can cause the cheese to become too melted and the sweet potatoes to become too soft.
Can I make this recipe gluten-free?
Yes! You can make this recipe gluten-free by substituting the all-purpose flour with a gluten-free flour blend. You can also use gluten-free breadcrumbs or crackers to add crunch to the top of the gratin.
How do I store leftovers?
To store leftovers, simply place the gratin in an airtight container and refrigerate for up to 3 days. You can also freeze it for up to 3 months. When you're ready to reheat it, simply thaw it overnight in the refrigerator, then reheat it in the oven or microwave.
sweet potato and kale gratin with creamy cheese sauce
Ingredients
- 2 large sweet potatoes, peeled and thinly sliced
- 2 cups curly kale, stems removed and discarded, leaves coarsely chopped
- 2 tablespoons unsalted butter
- 1 medium onion, thinly sliced
- 2 cloves garlic, minced
- 1 cup grated cheddar cheese
- 1/2 cup grated Parmesan cheese
- 1/2 cup all-purpose flour
- 1 cup heavy cream
- 1 teaspoon dried thyme
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
Instructions
- Preheat the oven. Preheat the oven to 375°F (190°C).
- Prepare the sweet potatoes. In a large bowl, toss the sliced sweet potatoes with 1 tablespoon of olive oil, salt, and pepper until they are evenly coated.
- Prepare the kale. In a separate bowl, massage the chopped kale with 1 tablespoon of olive oil, salt, and pepper until it is tender.
- Sauté the onion and garlic. In a large skillet, sauté the sliced onion and minced garlic in 2 tablespoons of butter until they are softened.
- Make the cheese sauce. In a medium saucepan, melt 2 tablespoons of butter over medium heat. Add the flour and whisk to combine. Cook for 1-2 minutes, then slowly pour in the heavy cream, whisking constantly. Bring the mixture to a simmer and cook until it thickens. Remove from heat and stir in the grated cheddar and Parmesan cheese until melted. Season with thyme, salt, and pepper.
- Assemble the gratin. In a 9x13 inch baking dish, create a layer of sweet potatoes. Top with a layer of kale, then a layer of the sautéed onion and garlic, and finally a layer of the cheese sauce. Repeat this process until all ingredients are used, finishing with a layer of cheese sauce on top.
- Bake the gratin. Cover the baking dish with aluminum foil and bake for 30 minutes. Remove the foil and continue baking for an additional 20-25 minutes, or until the top is golden brown and the sweet potatoes are tender.
- Serve and enjoy. Remove the gratin from the oven and let it cool for a few minutes before serving.
Recipe Notes
- To make ahead, prepare the sweet potatoes, kale, and cheese sauce up to a day in advance. Assemble the gratin just before baking.
- To freeze, assemble the gratin and freeze before baking. Bake frozen gratin at 375°F (190°C) for an additional 20-25 minutes, or until the top is golden brown and the sweet potatoes are tender.
- To reheat, bake the gratin in the oven at 350°F (180°C) for 15-20 minutes, or until warmed through.
- For a gluten-free option, substitute the all-purpose flour with gluten-free flour.
- For a vegetarian option, omit any meat products and use vegetable broth instead of chicken broth.
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