Sweet Potato Gratin with Gruyère
User Reviews
4.6
Sweet Potato Gratin with Gruyère
Description
Sweet Potato Gratin with Gruyère involves simmering minced garlic in heavy cream to infuse flavor. Thinly sliced sweet potatoes are layered in a buttered casserole dish with seasoning of kosher salt, black pepper, and fresh thyme, along with shredded Gruyère cheese between layers. The garlic cream is poured evenly over the potatoes before baking at 400°F.
The baking process softens the sweet potatoes while melting cheese and thickening the cream into a rich sauce that coats each potato slice. The Gruyère provides a distinct nutty, slightly sharp taste and gratinéed edges. Fresh thyme adds brightness and aroma.
This gratin complements roasted or grilled main dishes and can serve as a festive side for holiday meals. The layered preparation creates a tender yet structured texture.
Potatoes can be sliced ahead and soaked in ice water, refrigerated for one to two days before assembly to ease preparation on cooking day.
Ingredients
- 1½ cups heavy cream
- 2 cloves garlic minced
- 2 pounds sweet potato peeled and sliced about 1/8-inch thick
- 1½ teaspoons thyme chopped fresh
- 1½ teaspoons kosher salt
- ¾ teaspoon black pepper fresh ground
- 2 cups gruyere cheese shredded
Instructions
- Preheat oven to 400 degrees. In a small pot bring cream and garlic just to a simmer. Remove from heat and set aside. Butter a 9x13-inch shallow casserole dish or gratin dish of similar size and set aside. Stir the cooling cream occasionally to help prevent skin from forming.
- Build the Gratin: In the buttered casserole dish, spread one quarter of the sliced sweet potatoes out in a single, overlapping layer. Sprinkle the potatoes with 1/3 of the salt, pepper, and thyme and then about ½ cup of the grated cheese. Using another quarter of the sliced sweet potatoes, build a new overlapping layer. Again sprinkle with 1/3 of the seasonings and ½ cup of shredded cheese. Using half of the remaining sliced sweet potatoes, make another layer and sprinkle the last third of the seasonings and another ½ cup of cheese (you should have about ½ cup cheese remaining). Use the last of the sweet potatoes to make one final layer on top. Stir the garlic cream mixture then pour it evenly over the top of the gratin, being sure to cover the top layer of sweet potatoes. Shake the dish gently to distribute the cream. Sprinkle the remaining cheese over the top.
- Cover the dish with foil and bake in the middle of the oven for 30 minutes. Remove the foil, move the gratin to the top 1/3 of the oven and bake, uncovered, for an additional 20 minutes or until the top is nicely browned and the potatoes are tender when pierced with a sharp knife. You may also place it under the broiler for a few minutes if you wish the top to be a deeper brown (but watch it closely!). Remove from oven and let cool for 30 minutes before slicing.
Notes
- Slicing sweet potatoes ahead and soaking them in ice water in the refrigerator for a day or two can simplify meal prep.
Nutrition Information
Show DetailsNutrition Facts
Serving: 12servings
Amount Per Serving
Calories 259 kcal
% Daily Value*
| Calories | 259kcal | 13% |
| Carbohydrates | 16g | 5% |
| Protein | 8g | 16% |
| Fat | 18g | 28% |
| Saturated Fat | 11g | 55% |
| Cholesterol | 64mg | 21% |
| Sodium | 417mg | 17% |
| Potassium | 294mg | 6% |
| Fiber | 2g | 8% |
| Sugar | 3g | 6% |
| Vitamin A | 11385IU | 228% |
| Vitamin C | 2.6mg | 3% |
| Calcium | 266mg | 27% |
| Iron | 0.5mg | 3% |
* Percent Daily Values are based on a 2,000 calorie diet.
User Reviews
Overall Rating
4.6
You'll Also Love
