Name: Miso Butter Roasted Sweet Potatoes
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Cuisine: Fusion
Ingredients: 4 medium sweet potatoes, halved lengthwise; 2 tablespoons white miso paste; 3 tablespoons unsalted butter, softened; 1 tablespoon olive oil; 1 tablespoon maple syrup; 1 teaspoon rice vinegar; 1/2 teaspoon garlic powder; Salt and pepper, to taste; 1 tablespoon sesame seeds, for garnish; 2 scallions, thinly sliced for garnish

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Savory, umami-packed roasted sweet potatoes glazed in rich miso butter — this Miso Butter Roasted Sweet Potatoes dish is one of my go-to sides when I want something that feels both comforting and elevated. The blend of sweet, salty, and buttery flavors, along with the nutty depth from sesame and scallions, makes it unforgettable.

Miso Butter Roasted Sweet Potatoes

Ingredients

(Tip: You'll find the full list of ingredients and measurements in the recipe card below.)

4 medium sweet potatoes, halved lengthwise

2 tablespoons white miso paste

3 tablespoons unsalted butter, softened

1 tablespoon olive oil

1 tablespoon maple syrup

1 teaspoon rice vinegar

½ teaspoon garlic powder

Salt and pepper, to taste

1 tablespoon sesame seeds, for garnish

2 scallions, thinly sliced for garnish

Directions

I start by preheating the oven to 400°F (200°C) and lining a baking sheet with parchment paper.

Then I place the sweet potato halves cut-side down on the sheet and drizzle them with olive oil.

I roast them for 30–35 minutes until they’re fork-tender and beautifully caramelized.

While they roast, I mix together the miso paste, softened butter, maple syrup, rice vinegar, garlic powder, salt, and pepper in a small bowl until smooth and creamy.

Once the potatoes are ready, I flip them cut-side up and spread the miso butter over the warm surface so it melts into every crevice.

Finally, I sprinkle with sesame seeds and sliced scallions before serving them hot.

Servings and timing

This recipe makes 4 servings.

Prep time: 10 minutes

Cooking time: 35 minutes

Total time: 45 minutes

Calories: 220 kcal per serving

Variations

Vegan version: I swap out the butter for vegan butter or coconut oil to keep it dairy-free.

Spicy kick: I sometimes add a pinch of chili flakes or a drizzle of sriracha to the miso butter.

Extra texture: I like to top it with crushed toasted nuts like almonds or cashews for crunch.

Different miso: I’ve tried it with red or yellow miso too—each brings a slightly different depth of flavor.

Add protein: This also pairs well with baked tofu or a soft-boiled egg for a more complete meal.

Storage/Reheating

I store any leftover sweet potatoes in an airtight container in the fridge for up to 3 days. To reheat, I use the oven at 350°F (175°C) for about 10–15 minutes to restore the texture. The microwave works too, but I prefer the oven for keeping the edges crisp.

FAQs

How can I make this recipe vegan?

I simply replace the butter with plant-based butter or coconut oil. Everything else is already vegan-friendly.

What does miso paste taste like?

Miso paste has a salty, umami-rich flavor with a slightly tangy and fermented depth. It brings a savory element that complements the sweetness of the potatoes.

Can I use a different kind of potato?

Yes, but I find that sweet potatoes work best with the miso butter glaze. Other potatoes like Yukon gold or russet won’t have the same natural sweetness.

Is this recipe good for meal prep?

Absolutely. I make a batch and reheat portions throughout the week. The flavor even deepens after sitting, making it great for leftovers.

Can I air fry the sweet potatoes instead?

Yes, I’ve tried air frying them at 375°F (190°C) for about 20–25 minutes, flipping halfway through. It works well and speeds up the process.

Conclusion

These miso butter roasted sweet potatoes are a perfect balance of savory and sweet, with a rich, satisfying glaze that elevates them beyond your average side dish. I keep coming back to this recipe whenever I want something easy, flavorful, and comforting. Whether served alongside a main course or enjoyed on their own, they always hit the spot.

📖 Recipe:

Miso Butter Roasted Sweet Potatoes

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Author: Cheryl
Total Time: 45 minutes
Yield: 4 servings
Diet: Vegetarian

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Description

Savory and umami-packed roasted sweet potatoes glazed in rich miso butter. This comforting yet elevated side dish features a perfect blend of sweet, salty, and buttery flavors, topped with sesame seeds and scallions for added texture and depth.

Instructions

Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
Place the sweet potato halves cut-side down on the baking sheet and drizzle with olive oil.
Roast for 30–35 minutes until fork-tender and caramelized.
While the potatoes roast, mix the miso paste, softened butter, maple syrup, rice vinegar, garlic powder, salt, and pepper in a bowl until smooth.
Once roasted, flip the potatoes cut-side up and spread the miso butter mixture over the warm surface.
Garnish with sesame seeds and sliced scallions before serving.