These are roasted sweet potato wedges finished with a white miso glaze — savory, a little sweet, and caramelized at the edges. They come together in about 40 minutes and work as a side dish that holds its own next to pretty much anything else on the table. People who claim they don’t like sweet potatoes tend to finish these.
What makes this version work
Two things actually move the needle here. First, starting the potatoes cut-side down on a hot pan drives off surface moisture through direct contact with the metal — you get a proper golden crust instead of steamed, soft flesh. Second, the glaze goes on after the initial roast, not before. White miso has enough natural sugar that it scorches fast; applying it in the last few minutes under the broiler gives you that lacquered, slightly charred finish without burning. Skip either step and the dish is still good, but it won’t have the texture contrast that makes people reach for seconds.
Mistakes to avoid
- Crowding the pan. Sweet potato wedges release steam as they cook. If they’re touching, they braise instead of roast and you lose the crispy edges entirely. Use two sheet pans if needed.
- Using dark or red miso instead of white. Dark miso is much saltier and more pungent — it will overpower the sweet potato rather than complement it. Stick with shiro (white) miso for this glaze.
- Pulling them too early. The wedges need to feel tender all the way through before you add the glaze and broil. Test with a fork at the thickest point. Broiling a half-cooked potato just burns the outside.
- Walking away during the broil. The glaze can go from perfectly caramelized to bitter and black in under a minute. Stay at the oven and check every 30 seconds once it’s under the broiler — skip the garnish prep until after they’re out.
- Making the glaze too thick. If your miso is stiff, the glaze won’t spread evenly and you’ll get clumpy patches. Whisk until it’s loose enough to brush in a thin, even coat.
Vegan Miso-Glazed Sweet Potatoes
Equipment
- rimmed baking sheet
- Parchment paper or silicone baking mat
- Large mixing bowl
- Small saucepan
- Whisk
- Pastry brush or spoon
- Tongs
- Measuring cups and spoons
- Microplane or fine grater
- Chef's knife
- Cutting board
- Oven with broiler
Ingredients
For the Miso-Glazed Sweet Potatoes:
- 2 lb sweet potatoes preferably garnet or Japanese satsumaimo; scrubbed, dried, and cut into 1-inch wedges
- 1 tbsp neutral oil avocado or grapeseed for high heat
- ½ tsp kosher salt Diamond Crystal preferred
- ¼ tsp freshly ground black pepper
For the Miso Maple Glaze:
- 3 tbsp white miso paste (shiro miso) look for organic brands like Hikari or Miso Master
- 2 tbsp pure maple syrup grade A amber for balanced sweetness
- 1 tbsp unseasoned rice vinegar seasoned vinegar contains sugar/salt; use unseasoned
- 1 tbsp low-sodium tamari or soy sauce use tamari for gluten-free
- 1 tsp toasted sesame oil adds nutty aroma; a little goes a long way
- 1 tsp fresh ginger, finely grated use a Microplane for a silky paste
- 1 clove garlic, finely grated about 1/2 tsp when grated
- ¼ tsp red pepper flakes optional, or use 1/2 tsp gochugaru for a gentler heat
- 2 tbsp water to thin the glaze to brushable consistency
To Finish & Garnish:
- 1 tsp toasted white sesame seeds
- 1 tsp toasted black sesame seeds
- 2 whole scallions, thinly sliced on the bias
- 1 medium lime, cut into wedges optional, for brightness at the table
- 1 tbsp shredded nori optional, for oceanic umami and texture
- ¼ cup microgreens or cilantro leaves optional, for fresh contrast
Instructions
- Heat the Oven: Preheat to 425°F (220°C). Line a rimmed baking sheet with parchment or a silicone mat for easy release and even browning.
- Prep the Potatoes: Cut scrubbed sweet potatoes into 1-inch wedges. Pat dry thoroughly—dry surfaces caramelize better. Toss in a large bowl with neutral oil, kosher salt, and black pepper until each wedge has a light, even sheen.
- Roast for Color and Tenderness: Arrange wedges cut-side down with a little space between pieces. Roast for 15 minutes, then flip with tongs. Continue roasting 8–10 minutes, until edges are deeply golden and the centers are just tender when pierced (you should smell a warm, caramel aroma).
- Make the Glaze while Roasting: In a small saucepan, whisk miso, maple, rice vinegar, tamari, sesame oil, ginger, garlic, red pepper flakes, and water until smooth. Warm gently over low heat for 2–3 minutes until glossy and slightly thickened; avoid boiling to preserve miso’s delicate aromatics. No saucepan? Whisk in a bowl, using hot tap water to help dissolve the miso.
- Glaze and Broil: Switch the oven to broil (high). Brush a generous layer of glaze over the hot potatoes. Broil 2–3 minutes until the glaze bubbles and lightly chars in spots (watch closely to prevent burning). No broiler? Return to 425°F (220°C) for about 5 minutes instead.
- Finish: Transfer potatoes to a warm platter. Drizzle with any remaining glaze (or reserve a tablespoon for the plate), then shower with white and black sesame seeds and scallions. Add a squeeze of lime at the table for brightness.
- Serve: Present immediately while the edges are crisp and the glaze is tacky and aromatic with miso, maple, and toasted sesame.
Notes
Michelle’s Tips:
- Maximize Crisp Edges: Preheat the baking sheet in the oven for 5 minutes; add the oiled wedges to the hot pan for instant sizzle.
- Don’t Crowd: Space wedges so steam can escape. Overcrowding leads to soft, pale potatoes.
- Smoother Glaze: Whisk miso with a spoon of warm water first to form a slurry, then add remaining liquids for a lump-free finish.
- Flavor Swaps: Try red miso for a deeper, saltier note (reduce tamari to 2 tsp). Swap maple with agave or brown rice syrup for a different sweetness profile.
- Heat Level: Replace red pepper flakes with a pinch of shichimi togarashi for citrusy heat and sesame fragrance.
- Gluten-Free Assurance: Use certified gluten-free tamari and check miso labels.
- Air Fryer Method: 400°F (205°C) for 15–18 minutes, shake halfway; brush with glaze and air-fry 1–2 minutes more to set.
Nutrition
FAQ
Can I use any variety of sweet potato?
Garnet or jewel sweet potatoes work best because their flesh is dense and sweet enough to caramelize well. Japanese satsumaimo is also excellent if you can find it. Avoid the pale-fleshed varieties — they’re starchier and drier, and the glaze doesn’t complement them as well.
Is this dish gluten-free?
It is if you use tamari instead of regular soy sauce. Most white miso is made with rice koji and is gluten-free, but check the label — some brands include barley. When in doubt, look for a label that explicitly says gluten-free.
Can I make these ahead of time?
You can roast the wedges up to a day ahead and refrigerate them, then add the glaze and broil just before serving. Reheating fully finished wedges works but the glaze loses some of its shine and the edges soften. The broil step is quick enough that doing it fresh is worth it.
What can I serve these with to make a full meal?
They pair well with anything that has a contrasting texture — something crispy or grain-based balances the soft, sticky wedges. A simple soba noodle salad or a bowl of steamed rice with edamame alongside turns this into a complete dinner without much extra effort.
More plant-based recipes to try
- Sesame Ginger Soba Salad
- Vegan Mushroom Bulgogi Bibimbap
- Crispy Tofu Broccoli Stir-Fry
- Vegan Japanese Katsu Curry