Brown Butter–Miso Brûléed Sweet Potatoes

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Brown butter, miso, and maple syrup give these sweet potatoes a sweet-salty filling beneath a crackly brûléed crust.

brown butter–miso brûléed sweet potatoes with maple syrup or Torani brown sugar–cinnamon syrup
Credit:

Greg Dupree / Food Styling by Margaret Monroe Dickey / Prop Styling by Josh Hoggle

Active Time:
15 mins
Total Time:
1 hr 45 mins
Servings:
4
  • Nutty brown butter and salty miso keep the sweetness of the potatoes and maple syrup grounded.
  • Letting the filling stop steaming before torching allows the sugar to harden into a crisp shell rather than dissolving into the potatoes.
  • Moving the torch continuously over the surface melts the sugar evenly and prevents isolated spots from burning.

These brûléed sweet potatoes toe the line between a side and dessert. Roasting the potatoes whole concentrates their natural sugars and gives the flesh a soft, creamy texture. Once tender, the sweet potato is scooped from the skins and mashed with nutty brown butter, white miso, and maple syrup, creating a complex, sweet-salty filling with plenty of depth. The mixture is spooned back into the skins, turning a simple baked sweet potato into something a little more polished.

A thin layer of granulated sugar on top sets these apart. Torched until caramelized, the sugar cools into a brittle crust that provides a crunchy counterpoint to the silky sweet potato underneath. Brown butter and miso keep the sweetness in check, adding nuttiness, salinity, and umami. The crackly brûléed topping adds texture and a refined finish without pushing the potatoes too far toward dessert.

What kind of miso should I use?

White miso, or shiro miso, is well suited to sweet applications because it’s mild, lightly salty, and subtly sweet. Yellow and red miso are saltier and more assertive; generally, the darker the miso, the more intense its flavor. Either can work, but white miso adds umami without overpowering the sweet potatoes or brown butter. Look for it at Asian grocery stores or well-stocked supermarkets.

What type of sugar is best for brûléed sweet potatoes?

Granulated sugar is great because it melts quickly and evenly. Brown sugar and powdered sugar are prone to clumping and can melt unevenly, while coarse raw sugars tend to be finicky under a torch and take longer to caramelize. Regular granulated sugar gives the most consistent results — and chances are you already have it on hand.

Notes from the Food & Wine Test Kitchen

  • Use a light-colored skillet to brown the butter so you can easily see when the milk solids turn golden.
  • Use sweet potatoes that are similar in size and shape so they roast at the same rate.
  • If the filling seems unusually loose, cook it briefly over low heat to evaporate excess moisture, then cool it before adding the sugar.

This recipe was developed by Elizabeth Mervosh; the text was written by Craig Ruff.

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Ingredients

Original recipe (1X) yields 4 servings

  • 2 medium (10 to 11 ounces) sweet potatoes, scrubbed

  • 1 teaspoon vegetable oil

  • 1/2 teaspoon kosher salt, divided

  • 1/4 cup unsalted butter

  • 1 1/2 tablespoons pure maple syrup or brown sugar–cinnamon-flavored syrup (such as Torani)

  • 4 teaspoons white miso

  • 2 tablespoons granulated sugar, divided

Directions

  1. Preheat oven to 425°F. Prick sweet potatoes all over using a fork; rub potatoes evenly with oil, and sprinkle all over with 1/4 teaspoon salt. Arrange sweet potatoes on a wire rack placed in an aluminum foil–lined rimmed baking sheet. Bake until a fork is easily inserted into the center of each sweet potato, about 1 hour. Let cool for 20 minutes.

  2. While sweet potatoes cool, heat butter in a medium skillet over medium, stirring often, until melted, about 2 minutes. Once melted, continue to cook, stirring constantly, just until butter turns brown, 2 to 3 minutes. Remove from heat, and immediately whisk in maple syrup, miso, and remaining 1/4 teaspoon salt until smooth and emulsified; set aside.

  3. Cut each sweet potato in half lengthwise; scoop flesh from potato halves into skillet with butter mixture. Using a handheld potato masher or fork, mash potato flesh and butter mixture until smooth. Spoon potato mixture evenly into potato shells, and spread into an even layer. (If mixture is still steaming, set aside until steaming subsides, about 5 minutes.)

  4. Working with 1 sweet potato half at a time, sprinkle top evenly with 1 1/2 teaspoons sugar. Using a kitchen torch, gently toast sugar by moving the flame in a circular motion a few inches over top of sweet potato until sugar is melted and caramelized, about 40 seconds each. Repeat process with remaining sweet potato halves and remaining sugar. Let stand until sugar hardens, 5 to 10 minutes, before serving.

Make ahead

Roast and refrigerate the sweet potatoes up to two days in advance. When ready to serve, warm the flesh, mash it with the brown butter-miso mixture, return it to the skins, and brûlée the sugar just before serving.

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