Sweet Potatoes au Gratin Recipe

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Candice Wood Modified: April 19, 2022
Sweet Potatoes au Gratin Recipe

How To Make Sweet Potatoes au Gratin

Scrumptious, creamy, and easy, this sweet potatoes au gratin dish offers a delightful bite, made with a thick and spiced custard.

Preparation: 10 minutes
Cooking: 45 minutes
Total: 55 minutes



  • 2cupsheavy cream
  • 1large egg
  • 1tspkosher salt
  • ¼tspcinnamon
  • ¼tspground nutmeg
  • tspcoarse ground black pepper
  • ¼cupParmesan cheese,grated
  • 2large sweet potatoes,peeled and sliced ¼-inch thick


  1. Preheat oven to 375 degrees F and spray an 8×8-inch baking dish with vegetable oil spray.

  2. In a large bowl, whisk together the heavy cream, egg, salt, cinnamon, nutmeg, black pepper, and Parmesan cheese until smooth.

  3. Add sweet potatoes to the baking dish and carefully pour the custard over the sweet potatoes.

  4. Bake, uncovered, for 45 to 50 minutes.


  • Calories: 233.08kcal
  • Fat: 23.84g
  • Saturated Fat: 14.68g
  • Trans Fat: 0.00g
  • Monounsaturated Fat: 6.94g
  • Polyunsaturated Fat: 0.96g
  • Carbohydrates: 1.98g
  • Fiber: 0.07g
  • Sugar: 1.72g
  • Protein: 3.68g
  • Cholesterol: 107.93mg
  • Sodium: 164.14mg
  • Calcium: 98.34mg
  • Potassium: 58.61mg
  • Iron: 0.18mg
  • Vitamin A: 264.19µg
  • Vitamin C: 0.36mg
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