3 pounds
sweet potatoes, peeled and cut into 1-inch cubes
½ cup (1 stick)
unsalted butter, plus more for serving
½ cup
heavy cream
2 tablespoons
maple syrup
½ teaspoon
freshly cracked black pepper, plus more for serving
¼ teaspoon
ground nutmeg
2 teaspoons
fresh thyme leaves, plus more for serving
Method
Fill a large pot with 4 quarts water and season with 3 teaspoons of the salt. Add the sweet potatoes and bring to a boil over high heat. Cook until just fork tender, about 15 minutes. Drain.
In the same pot, combine the butter and cream over medium-low heat. Cook, stirring, until the butter is melted, about 2 minutes. Using a potato ricer, rice the potatoes over the hot butter mixture. (Alternatively, mash the potatoes directly into the liquid.) Season with the remaining 1 teaspoon salt, maple syrup, pepper, nutmeg, and thyme and stir to combine. Adjust the seasoning to taste.
Transfer the potatoes to a large bowl and top with 1 to 2 tablespoons of butter, pepper, and thyme leaves.