Sweet Potatoes with Kalbi Butter

Sweet and savory kalbi butter is a riff on the traditional flavors of Korean BBQ. A mash-up of soy sauce, sesame oil, garlic, brown sugar and soft butter makes for a super-versatile compound butter. Put it on fish, chicken, or roasted vegetables, especially sweet potatoes. Make a double batch so you can have some now and more later.
Save Recipe
  • Level: Easy
  • Total: 1 hr 20 min
  • Active: 20 min
  • Yield: 4 servings
Share This Recipe


Sweet Potatoes

4 sweet potatoes

1/4 cup corn oil

2 tablespoons Sea salt

Kalbi Butter

6 tablespoons soy sauce

2 tablespoons sugar

1 tablespoon brown sugar

1 tablespoon sesame oil

2 cloves garlic, chopped

1 tablespoon ginger, minced

1/2 teaspoon Korean chili flakes, plus more for garnish

1 pound unsalted butter, softened


Scallions, chopped

flaky sea salt, preferably Maldon


  1. Sweet potatoes: Preheat oven to 375 degrees F. Coat potatoes in corn oil, then roll in sea salt. Wrap in aluminum foil and bake until soft, 1 hour.
  2. Kalbi butter: Simmer soy sauce, sugars, and sesame oil in a small saucepan over high heat, just until sugars are dissolved, 1–2 minutes. Turn heat off to cool slightly, 5 minutes; soy mixture should still be warm, but not hot.
  3. Meanwhile, in a food processor, pulse garlic, ginger, and chili flakes until blended. Add the softened butter and pulse to incorporate. With the motor on, drizzle in the warm soy liquid, a little at a time, to fully combine with the butter mixture. Transfer this compound butter to a bowl and set aside. (Note: Can be stored in an airtight container for several weeks.)
  4. Assembly: Remove sweet potatoes from oven. Transfer to a plate and split down the middle. Spoon in a generous amount of kalbi butter. Garnish with scallions, sea salt, and chili flakes. Serve immediately.
Sweet Potato Taquitos
Alejandra Ramos

Sweet Potato Taquitos

16m Easy 100%
Roasted Sweet Potatoes
7m Easy 98%
Korean BBQ Baby Back Ribs
14m Easy 99%
Thai Green Curry with Chicken and Sweet Potato