Tulo

Roasted White Sweet Potatoes Recipe

A sheet pan of golden-brown roasted white sweet potato cubes flecked with rosemary and garlic, with a small bowl of fresh chives beside it.
Photo by Damir Mijailovic on Pexels

White sweet potatoes have a drier, starchier flesh than the orange varieties, so high heat and a single layer on the pan drive off moisture fast and let the natural sugars caramelize into a deeply browned, nutty crust instead of turning soft and mushy.

Prep
15 min
Cook
38 min
Total
53 min
Servings
4

Ingredients

Servings4
  • 2 lbs white sweet potatoes, peeled and cut into 3/4-inch cubes
  • 3 tbsp olive oil
  • 4 cloves garlic, minced
  • 2 tsp fresh rosemary, chopped
  • 1 tsp kosher salt
  • 1/2 tsp black pepper, freshly ground
  • 2 tbsp fresh chives, chopped, for garnish

Nutrition per serving

Calories
290
Protein
4g
Carbs
46g
Fat
10g

Based on the recipe as written, one serving. Recalculates if you swap an ingredient above. An estimate only, exact values depend on the specific ingredients used.

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Instructions

  1. 1Preheat the oven to 425°F (220°C) and line a large rimmed baking sheet with parchment paper.
  2. 2Peel the white sweet potatoes and cut them into even 3/4-inch cubes.
  3. 3On the sheet pan, toss the cubes with olive oil, minced garlic, rosemary, salt, and pepper until evenly coated, then spread them into a single layer with space between the pieces.
  4. 4Roast for 35-40 minutes, flipping the pieces halfway through, until the undersides are deeply browned and a fork slides in easily.
  5. 5Let the potatoes rest on the pan for 5 minutes, then transfer to a serving dish and scatter with fresh chives.

Tips & variations

  • White sweet potatoes have less natural sugar and a drier texture than orange-fleshed sweet potatoes, so they take slightly longer at high heat to develop the same browning; don't pull them early just because the cook time looks long for a sweet potato.
  • Toss with a spoonful of maple syrup or a pinch of smoked paprika in the last 10 minutes of roasting for more contrast against the naturally mild, nutty flavor.
  • No white sweet potatoes at the store? Japanese sweet potatoes (purple-skinned, white-fleshed) roast almost identically and can be swapped 1:1.
  • Choose potatoes that are firm with smooth skin and no soft spots or sprouting eyes; soft spots usually mean the interior has started to break down and won't roast evenly.

Storage & reheating

Store cooled leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in a 400°F (200°C) oven or air fryer for 8-10 minutes to recrisp the edges; microwaving works but leaves them soft.

Tips from the Tulo kitchen

  • Cutting the cubes slightly smaller, closer to 1/2 inch, shortens the roast time by about 10 minutes if a faster side dish is needed.
  • A dark, heavy sheet pan browns the undersides faster and more evenly than a light-colored nonstick one.

FAQ

What's the difference between white sweet potatoes and regular orange sweet potatoes?

White sweet potatoes have pale tan skin and creamy white flesh that's drier, starchier, and less sweet than orange-fleshed sweet potatoes, giving them a texture closer to a russet potato when roasted.

Are white sweet potatoes the same as yams?

No. True yams are a different species with rough, bark-like skin, mostly grown in Africa and Asia and rarely sold in US grocery stores; what's often labeled a 'yam' at the supermarket is actually an orange sweet potato.

Can I boil white sweet potatoes instead of roasting them?

Yes, though because they're starchier and drier than orange varieties, they hold their shape well when boiled and mash up firmer and less creamy unless extra butter or milk is added.

How should raw white sweet potatoes be stored?

Keep them in a cool, dark, well-ventilated spot like a pantry, not the refrigerator; cold temperatures below about 55°F (13°C) can turn the starches gritty and give the flesh a hard core.

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