Side Dishes

May 11, 2023

Japanese Sweet Potato with Miso Butter

I'm just going to say it. Japanese sweet potatoes are better than regular sweet potatoes. They have a firmer flesh, a nuttier taste to them and they just taste better overall. And when you slather these grilled Japanese sweet potatoes with miso butter, you're in for a real treat! You can easily meal prep these ahead by steaming them first and then finishing them on the grill to save some time.

Japanese sweet potato grilled with miso butter on top.

Ingredients

Here's everything you'll need to make these miso butter sweet potatoes.

Japanese sweet potato grilled with miso butter on top close up.

How to Make Grilled Japanese Sweet Potatoes

The easiest method I've found for grilling these Japanese sweet potatoes is to steam them whole first. Not only is this method hands off and easy, it also helps the potatoes retain their flavour better and nutrients.

Japanese sweet potatoes in steamer basket.

Once you've steamed them for close to an hour (depending on size), they should be cooked through and fork tender.

Let them cool slightly, and then slice them in half lengthwise.

Japanese sweet potatoes halved on a plate.

Heat your grill and spray lightly with avocado oil spray. Place them on the grill cut side down for four to five minutes until charred. Rotate the potatoes to create crosshatch grill marks and cook for another four to five minutes.

How to Make a Miso Butter with Nori

Making the miso nori butter for topping on these Japanese sweet potatoes is super easy.

Remember to let your butter soften and come to room temperature first.

Once you've done that simply mix together the softened butter, miso paste and chopped nori until well combined and then set aside.

butter with miso paste and nori in a bowl.

What to do With Leftover Miso Butter?

You will have leftover miso butter, and that's not a problem! Here are more ways to use it up.

Japanese sweet potato grilled with miso butter on top.

More Sides Recipes

Ready to make this? Let's go!

If you make this miso butter sweet potato recipe, please let me know by tagging me on Instagram, or leave a comment and/or review below!

This post contains affiliate links, which means I may receive a small commission at no extra cost to you. I only share products and services I have personally used and love. Disclosure here.

Japanese Sweet Potato with Miso Butter

These grilled Japanese sweet potatoes are steamed first to keep them moist and then grilled to get them charred. Top with a miso and nori butter, chives and sesame seeds for a delicious side dish.

Prep:
5
min
cook:
70
min
total:
75
min
servings:
6
Author:

Jaclyn

Ingredients
  • 3 Japanese sweet potato (whole, scrubbed)
  • 5 tbsps unsalted butter, room temperature
  • 1 1/2 tbsps white miso paste
  • 1/2 large sheet of nori, finely chopped (about 1 heaping tablespoon)
  • avocado oil spray (for grilling, optional)
  • fresh chives, finely chopped (for garnish)
  • sesame seeds (for garnish)
  • lime wedges (optional, for garnish)
Instructions
  1. Fill a pot with water and place a steamer basket on top. Place the sweet potatoes in the basket and bring to a low boil over medium-high heat. Once boiling, reduce to a simmer and cover. Cook for 50 to 60 minutes, until the potatoes are fork tender and cooked through.
  2. Meanwhile, mix together the softened butter, miso paste and chopped nori until well combined and then set aside.
  3. Heat a grill over medium-high heat.
  4. Once the potatoes are done cooking, remove and let cool slightly before slicing in half lengthwise. Lightly spray with avocado oil, if using.
  5. Place the potatoes cut side down on the grill and cook for four to five minutes, until charred. Rotate the potatoes to create crosshatch grill marks and cook for another four to five minutes.
  6. Add the potatoes to a large plate or platter and top with some of the butter, chives, sesame seeds and lime wedges (if using).

Notes

Lime: a light squeeze of lime helps to brighten the dish, but is optional

Butter: this recipe makes more butter than you will use. Store leftover in a sealed container in the fridge.

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