How Long to Cook Sweet Potatoes (Whole, Medium) in the oven

Specification: 8-10 oz sweet potatoes, pierced multiple times with fork, placed on a foil-lined baking sheet

Target Temp

400°F (204°C)

Radiant Heat

Total Time

45–55 mins

Total Cook Window

Flip Mark

No Flip

Continuous Cook

Internal Safe Temp

205°F (96°C) internal tender custard

USDA Safe Pull

COOK MODE

Live timer · flip prompt · target temp · rest stage

Start cook

3-Step Execution Protocol

Preheat & Prep

Preheat oven to 400°F (204°C). Prepare sweet potatoes (whole, medium) (8-10 oz sweet potatoes, pierced multiple times with fork, placed on a foil-lined baking sheet).

Cook

Cook for 45–55 mins. Do not flip; allow surface to develop undisturbed.

Check & Rest

Skin puffs slightly and wrinkles, sweet caramelized syrup drips from fork vents, knife glides to center. Confirm internal temperature reaches 205°F (96°C) internal tender custard. Rest for 5 minutes before serving.

Verification Basis & Testing Rig

North Carolina SweetPotato Commission Roasting Guidelines; USDA Nutrient Database Standards.

Pro Tip: Always line the pan with foil; sweet potatoes drip sugary caramel as they roast which bakes rock-hard onto bare pans.

Related oven Cook Times

Chicken Breast (Boneless, Skinless)

400°F (204°C)20–25 mins

Salmon Fillet (Skin-On, Center Cut)

400°F (204°C)12–15 mins

Baked Potato (Whole Russet)

400°F (204°C)50–60 mins

Bacon (Thick-Cut, Sheet Pan Method)

400°F (204°C)18–22 mins

Pork Chops (Bone-In, 1-inch Thick)

400°F (204°C)18–22 mins

Chicken Thighs (Bone-In, Skin-On)

425°F (218°C)35–45 mins