Sweet Potato and Gruyere Gratin

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This elegant and creamy take on a sweet potato gratin is elevated with Gruyère cheese sauce made with four fresh herbs. Top with more fresh herbs before serving, if desired.

Submitted by Sandy Wilson Wickberg
Updated on September 12, 2024
2
Prep Time:
30 mins
Cook Time:
50 mins
Additional Time:
10 mins
Total Time:
1 hr 30 mins
Servings:
12
Yield:
1 (9x13-inch) casserole
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Ingredients

  • ¾ cup heavy cream

  • ¾ cup milk

  • ¼ cup unsalted butter

  • 2 cloves garlic, minced

  • 1 tablespoon chopped fresh parsley

  • 1 tablespoon chopped fresh thyme

  • 1 tablespoon chopped fresh sage

  • 1 tablespoon chopped fresh rosemary

  • 1 ½ teaspoons salt

  • ¾ teaspoon ground black pepper

  • 3 pounds sweet potatoes, peeled and thinly sliced

  • 1 ½ cups shredded Gruyère cheese

  • aluminum foil

Directions

  1. Preheat the oven to 400 degrees F (200 degrees C). Lightly grease a 9x13-inch baking dish.

  2. Combine cream, milk, butter, and garlic in a small saucepan over medium heat; bring to a simmer. Off heat, stir in parsley, thyme, sage, rosemary, salt, and black pepper.

  3. Arrange 1/2 sweet potatoes in bottom of the prepared baking dish, pour 1/2 cream mixture on top, sprinkle with 1/2 Gruyère cheese. Repeat layers once more; cover with aluminum foil.

  4. Bake in the preheated oven for 30 minutes. Remove foil; continue baking, uncovered, until potatoes are tender and cream and cheese mixture is bubbly and golden brown, about 15 minutes. Remove from the oven; allow to sit 10 minutes before serving.

Nutrition Facts (per serving)

248 Calories
14g Fat
24g Carbs
7g Protein
Nutrition Facts
Servings Per Recipe 12
Calories 248
% Daily Value *
Total Fat 14g 18%
Saturated Fat 9g 43%
Cholesterol 47mg 16%
Sodium 438mg 19%
Total Carbohydrate 24g 9%
Dietary Fiber 4g 13%
Total Sugars 6g
Protein 7g 13%
Vitamin C 4mg 4%
Calcium 204mg 16%
Iron 1mg 4%
Potassium 437mg 9%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.