Sweet Potato Gratin

Sweet Potato Gratin – This savory sweet potato dish is a must for your holiday gatherings! Thinly sliced sweet potatoes in a creamy sauce layered with gruyere cheese then topped with toasted pecans and sage.

I love including a sweet potato dish with my Thanksgiving spread and while I do love a good Sweet Potato Casserole, sometimes they are just too much with all the sweetness. A savory sweet potato dish is a great way to shake up the traditional casserole recipe and this Sweet Potato Gratin does not disappoint!

First, you are going to either risk your life by slicing sweet potatoes with a mandolin or with a knife if you are skilled enough to slice consistent slices. Then mix up some cream, milk, garlic, and thyme. Layer the sliced sweet potatoes with some gruyere cheese and cream mixture and stick them in the oven. To make these even fancier though, after they bake for a bit, I sprinkled some toasted pecans and sage around the edges and holy heck, it is good!

To make Sweet Potato Gratin, you will need:

• • sweet potatoes
  • heavy cream
  • milk
  • fresh thyme
  • garlic
  • salt
  • fresh grated gruyere cheese
  • butter
  • chopped pecans
  • fresh sage

Recipe Tips and Suggestions:

• As much as I hate using a mandolin, it is the best way to slice the sweet potatoes. I like this one from OXO (affiliate link) as it feels less risky to use. If you want to use a knife, you will need to make consistent thin slices. 
• Make sure you use fresh grated gruyere cheese. Pre-shredded cheese contains added ingredients that prevent clumping and will also result in a much less smooth melt.
• You can use other types of cheese if you would like. Fontina, Gouda, and Parmesan would also be really good or if you want to do a combo.
• The pecan topping is optional if you don’t want the extra steps.
• You can prepare this dish in advance by slicing your sweet potatoes and covering them in water until ready to use (just pat dry first).

Looking for more sweet potato recipes? Try these!

Herb and Brown Butter Mashed Sweet Potatoes
Zesty Baked Sweet Potato Fries
Sweet Potato Burgers
Maple Roasted Sweet Potatoes

Print

Yield: 6 servings

Sweet Potato Gratin

Prep Time 20 minutes

Cook Time 30 minutes

Total Time 50 minutes

Sweet Potato Gratin - This savory sweet potato dish is a must for your holiday gatherings! Thinly sliced sweet potatoes in a creamy sauce layered with gruyere cheese then topped with toasted pecans and sage.

Ingredients

• 3 large sweet potatoes, peeled and thinly sliced (1/8th-1/4 inch)
• 2/3 cup heavy cream
• 1 cup milk (full fat or reduced, avoid skim)
• 1 clove garlic, minced
• 1 teaspoon salt and 1/4 teaspoon black pepper
• 1 tablespoon fresh chopped thyme
• 1 1/2 cups fresh grated gruyere cheese

For the pecan topping:

• 2 tablespoons butter
• 2/3 cup well-chopped pecans
• 1 tablespoon very finely chopped sage

Instructions

1. Preheat oven to 375 degrees F. Spray a cast iron dish or glass baking dish with cooking spray and set aside.
2. In a bowl, whisk together the milk and cream in a small saucepan and bring to a simmer. Stir in the garlic and thyme, and salt and pepper. Set aside and let cool.
3. Arrange about half the sweet potatoes in your baking dish. Sprinkle about half the cheese. Then layer the remaining sweet potatoes followed by the rest of the cheese. Pour the milk and cream milk mixture over the potatoes so they are evenly covered.
4. Cover with foil. Bake the sweet potatoes for about 20 minutes. While the potatoes are baking, prepare the pecan garnish.
5. In a small saucepan, melt the butter, then add the pecans and sage. Toast for about 3 minutes over medium low heat. Remove.
6. After the 20 minutes are up, remove the sweet potatoes and foil. Sprinkle the pecans as desired (I did mine more around the edge). Bake the sweet potatoes for another 10-15 minutes or until the cheese is bubbling and the sweet potatoes are tender.

Nutrition Information:

Yield:

6

Serving Size:

1
Amount Per Serving: Calories: 448Total Fat: 34gSaturated Fat: 16gTrans Fat: 1gUnsaturated Fat: 16gCholesterol: 79mgSodium: 674mgCarbohydrates: 24gFiber: 4gSugar: 9gProtein: 15g

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