Roasted Sweet Potatoes With Miso Butter and Maple Recipe (2024)

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Miso butter adds savory richness; ginger and maple syrup add punch and sweetness.

By

Emily and Matt Clifton

Roasted Sweet Potatoes With Miso Butter and Maple Recipe (1)

Emily and Matt Clifton

Emily and Matt Clifton are recipe developers, photographers, and cookbook authors. Their two cookbooks are Cork and Knife (2019) andThe Ultimate Dutch Oven Cookbook (2021).

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Updated September 16, 2022

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Roasted Sweet Potatoes With Miso Butter and Maple Recipe (2)

Why It Works

  • Sweet maple syrup and salty miso add extra dimensions of flavor to roasted sweet potatoes.
  • Fresh grated ginger and white wine vinegar balance the dish's sweetness, keeping it from becoming cloying.

Like many people, we have a strategy for tackling Thanksgiving—I call it our "What Works" list. By knowing in advance that Sunday is when we make the stock and Tuesday is when we make the gravy, that this mixing bowl is big enough to hold all the rutabaga and that we'll need a certain number of chew sticks to distract our dog while we cook, we don't have to think too hard about almost anything, no matter how many people end up coming over. The trouble with the "What Works" list is that we sometimes get complacent, leaning on the same tired dishes year after year, without any variation. This roasted sweet potato recipe is one of our efforts to break out of our Thanksgiving rut this year.

Our idea was to combine two seemingly unlikely bedfellows with the roasted sweet potatoes: miso and maple syrup. Miso, especially the white kind we call for here, is not only salty and savory but also lightly sweet, making it a perfect match for sweet and earthy sweet potatoes. Maple syrup, meanwhile, delivers a complex flavor that plays beautifully off those salty, earthy qualities. Don't worry if you're serving a traditional crowd—this combination doesn't scream "fusion." In fact, if you don't tell them there's miso in it, most probably won't realize it (though they'll likely want to know your secret). And, of course, if you don't make this for Thanksgiving, it'll still be great on the table any other time.

The recipe itself is incredibly easy. We combine butter, maple syrup, and miso in a saucepan and cook them together to form a smooth sauce. Next, we stir in some white wine vinegar and grated fresh ginger, for some sharp, tart flavors to help balance the sweetness and add brightness to contrast with those earthy flavors. We toss diced sweet potatoes with that sauce and roast them until they're tender and browned. We like to leave the skins on, since they have good flavor and grow tender during the roasting, but feel free to peel the potatoes for a less rustic look.

That's basically all there is to it. Those of you familiar with othersweet potato recipeson Serious Eats may have noticed that we don't kick ours off with a low-temperature cooking step before the final roasting. That's because that step is designed to enhance the sweetness of the potatoes (by allowing enzymes that are active at those lower temps to break complex carbohydrates into simple sugars), but in this case, we already have more than enough sweetness from the maple syrup and white miso. Any sweeter, and we'd risk crossing into cloying territory.

Roasted Sweet Potatoes With Miso Butter and Maple Recipe (3)

This dish wasn't on our "What Works" list before, but we think there's a good chance it will be from now on. There are worse ruts to be in, right?

November 2016

Recipe Details

Roasted Sweet Potatoes With Miso Butter and Maple Recipe

Active20 mins

Total60 mins

Serves6 servings

Ingredients

  • 2 1/4 pounds (1kg) sweet potatoes, cut into 2-inch pieces (about 7 cups; see notes)

  • 6 tablespoons (90g)unsalted butter

  • 1/4 cup (60ml) puremaple syrup

  • 1/4 cup (60g) whitemiso

  • 2 teaspoons (10ml)white wine vinegar

  • 1 (1-inch) knob peeled fresh ginger, grated (about 2 teaspoons)

  • Kosher salt and freshly ground black pepper

Directions

  1. Preheat oven to 375°F (190°C). Arrange sweet potatoes in a single layer in a 9- by 13-inch baking dish.

  2. In a small saucepan, combine butter, maple syrup, and miso and cook over medium heat, stirring, until butter is melted and sauce is smooth. Stir in vinegar and ginger and remove from heat.

    Roasted Sweet Potatoes With Miso Butter and Maple Recipe (4)

  3. Pour miso butter over sweet potatoes and toss to coat. Season with salt and pepper. (Be careful with the salt, as the miso will already be salty.)

    Roasted Sweet Potatoes With Miso Butter and Maple Recipe (5)

  4. Bake potatoes, stirring occasionally, until tender when pierced with a knife, about 40 minutes. Serve immediately. (To brown the potatoes more deeply, set them under the broiler for 2 to 3 minutes; watch them closely to make sure they do not burn.)

Special Equipment

9- by 13-inch baking dish

Notes

We like to keep the skins on our sweet potatoes, but you can peel them if you like.

Read More

  • A Field Guide to Sweet Potato Varieties (and the Dirt on Yams)
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  • Brown Butter Rosemary Roasted Sweet Potatoes
  • The Best Roasted Sweet Potatoes
  • Truly Candied Yams (Sweet Potatoes)
  • The Best Way to Cook Whole Sweet Potatoes
Nutrition Facts (per serving)
318Calories
13g Fat
47g Carbs
5g Protein

×

Nutrition Facts
Servings: 6
Amount per serving
Calories318
% Daily Value*
Total Fat 13g17%
Saturated Fat 8g39%
Cholesterol 32mg11%
Sodium 490mg21%
Total Carbohydrate 47g17%
Dietary Fiber 6g22%
Total Sugars 20g
Protein 5g
Vitamin C 33mg167%
Calcium 88mg7%
Iron 1mg8%
Potassium 871mg19%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

Roasted Sweet Potatoes With Miso Butter and Maple Recipe (2024)

FAQs

Why are my roasted sweet potatoes mushy? ›

Typically when you roast sweet potatoes, they end up mushy, not crispy. That's because the high sugar content and moisture in the potato creates a softer result. In this case, they get their crispiness not by deep frying, but by sprinkling a secret ingredient over and baking them!

Is it better to wrap sweet potatoes in foil when baking? ›

Wrapping sweet potatoes in foil helps in a few ways. It prevents the exterior of the tuber from drying out and overheating too quickly, which would minimize enzymatic activity; it also results in a more evenly cooked texture.

Does freezing sweet potatoes make them sweeter? ›

Sweet potatoes contain a significant concentration of maltose, a naturally produced sugar. Thanks to chemistry, freezing a sweet potato allows ample time for amylase enzymes — an enzyme that converts glycogen and starch into simple sugars — to convert starch into a deliciously sweet-tasting maltose.

Why are my roasted sweet potatoes not crispy? ›

I've found that sweet potatoes really need space for a truly roasted, crisped-edge result. Aim for about one inch of space between pieces. This leads to good, dry, hot airflow that will let the potato pieces' moisture evaporate while letting them dry and crisp up more.

Why is my sweet potato not crispy in the oven? ›

The main reasons for soggy sweet potato wedges are: overcrowding the baking sheet, not tossing in enough oil, having too thick sized wedges, and not roasting at a high enough heat.

What's the best temperature for baking sweet potatoes? ›

Preheat the oven to 425°F and place a piece of foil on a baking sheet. Use a fork to poke holes into the sweet potatoes, set them on the baking sheet, and roast for 40 to 50 minutes, or until puffed up and soft inside when pierced with a fork.

Should you poke holes in sweet potatoes before baking? ›

Do you have to poke holes in sweet potatoes before baking? Typically holes are poked into a sweet potato to prevent a potato exploding in your oven. However, the chance of that happening is low, and according to Lifehacker, sweet potatoes will retain more flavor if you don't poke them.

Why should potatoes not be wrapped in aluminum foil? ›

Trapping that spud in aluminum foil where the moisture cannot escape results in a wet potato. Over baking the potato in foil cannot be seen (or easy to smell that it is overcooked) so you can end up with dark brown skin on the bottom, tough to eat and giving off a slightly burnt taste.

What brings out the flavor of sweet potatoes? ›

Browning butter packs in tons of flavor, without dulling the sweet potatoes. Slow-roasting the sweet potatoes activates endogenous enzymes that bring out their natural sweetness. A touch of maple syrup, butter, and a bit of chopped thyme are the only embellishments these naturally sweet sweet potatoes need.

What flavors pair well with sweet potatoes? ›

Sweet potatoes pair well with apple, peach, and orange juice, and coffee - flavors that have distinctly sweet or bitter notes.

Should you thaw frozen sweet potatoes before roasting? ›

You can also speed up the cooking time by freezing and then thawing the potatoes prior to roasting. Once thawed, you'll notice that the sweet potato is entirely soft, almost as if it's already been cooked; fully thawed sweet potatoes will take about 45 minutes at 450°F (230°C).

What happens if you freeze sweet potatoes without blanching? ›

Can you freeze raw sweet potatoes? It's not recommended to freeze raw sweet potato fries or cubes. They won't hold up well in the freezer and they won't cook correctly in recipes. Blanching or cooking sweet potatoes fully is the way to go.

What happens if you freeze raw sweet potatoes? ›

While deciding where to store sweet potatoes keep in mind whether they're raw or cooked. Storing raw sweet potatoes in the freezer will actually make them spoil faster, however it's best to keep baked sweet potatoes or cooked yams in the freezer.

How do you keep sweet potatoes from getting mushy? ›

Cut into evenly sized pieces: Cutting the sweet potatoes into evenly sized pieces will help them cook more evenly and prevent soggy centers. Boil or steam: Boiling or steaming the sweet potatoes until they are tender, but not too soft, will help prevent them from becoming soggy.

How do you keep sweet potatoes from getting soggy? ›

635 cm) sized cut fries, that way they all evenly cook. TIPS & TRICKS to Make this Recipe: The main secrets to achieving that incredible crispy texture, is to soak the cut sweet potatoes in cold water for at least 30 minutes. This helps remove the starch from the sweet potatoes so they´re not limp & soggy.

How do you fix mushy potatoes? ›

Fix them: Scoop the watery mashed potatoes into a pan and stir constantly over low heat to evaporate the excess liquid. If the potatoes are really watery, you can add either cornstarch or instant mashed potatoes a half teaspoon at a time to help the spuds thicken to your preferred consistency.

Why are my roasted potatoes gummy? ›

Using Foil -

Foil traps the moisture in the potato causing the skin to be wet and the inside flavorless or gummy. Potatoes are made up of about 80% water, so sealing it up in foil does not allow enough water to escape, making it soggy.

References

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