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Sweet Potato Gratin Recipe

This savory Sweet Potato Gratin is inspired by Pommes Anna, a French dish of creamy, thinly sliced potatoes with rich buttery flavor topped with melted Gruyere cheese.

Prep Time
15 mins
Cook Time
15 mins
Additional Time
5 mins
Total Time
1 hr 5 mins
Servings: 8 servings
Calories: 212 kcal
Course: Side Dish
Cuisine: French

Ingredients

  • Olive oil spray
  • 2 pounds sweet potatoes
  • 2 tablespoons melted butter
  • 1 tablespoon fresh thyme leaves (chopped)
  • 1 teaspoon kosher salt
  • fresh black pepper
  • 1 ounce finely grated Parmesan cheese
  • 3/4 cup grated gruyere cheese

Instructions

    Cup of Yum
  1. Preheat the oven to 425°F. Coat a round pie dish or other 6-cup gratin dish with olive oil spray.
  2. Peel the sweet potatoes and slice them as thinly as you can manage, I did them 1/8th inch thick with a mandolin. Put the slices in a large bowl and add the melted butter, thyme, salt, and pepper to taste. Toss to make sure all the slices are well coated.
  3. Take a handful of potatoes and arrange them in a layer on the bottom of the baking dish. Keep adding more layers, one handful of potatoes at a time and as you work, press the potato slices down and try to keep them in an even thickness all around. Once all the slices have been added, press down gently to compact them a bit.
  4. Sprinkle the Parmesan cheese and Gruyere evenly over the top. Spray one side of a piece of aluminum foil with olive oil spray and cover the pan with aluminum foil, oiled-side down (to prevent the cheese from sticking).
  5. Bake the gratin for 30 minutes. Uncover and continue to bake until the potatoes are tender when pierced with a knife and the cheese is melted, about 15 minutes.
  6. Let it rest for 5 minutes before slicing and serving.

Nutrition Information

Serving 2/3 cup Calories 212kcal (11%) Carbohydrates 24g (8%) Protein 8g (16%) Fat 9.5g (15%) Saturated Fat 5.5g (28%) Cholesterol 29.5mg (10%) Sodium 432mg (18%) Fiber 3.5g (14%) Sugar 4g (8%)

Nutrition Facts

Serving: 8servings

Amount Per Serving

Calories 212

% Daily Value*

Serving 2/3 cup
Calories 212kcal 11%
Carbohydrates 24g 8%
Protein 8g 16%
Fat 9.5g 15%
Saturated Fat 5.5g 28%
Cholesterol 29.5mg 10%
Sodium 432mg 18%
Fiber 3.5g 14%
Sugar 4g 8%

* Percent Daily Values are based on a 2,000 calorie diet.