How Long to Cook Roasted Asparagus Spears (Medium Thickness) in the sheet pan
Specification: 1.5 lb medium asparagus spears with the tough woody ends snapped off, tossed with 2 tbsp olive oil and salt, in a single crosswise layer on a half-sheet pan
3-Step Execution Protocol
Preheat oven to 425°F (218°C). Arrange roasted asparagus spears (medium thickness) (1.5 lb medium asparagus spears with the tough woody ends snapped off, tossed with 2 tbsp olive oil and salt, in a single crosswise layer on a half-sheet pan) on a parchment-lined sheet pan in a single layer.
Cook for 10–14 mins. Do not flip; allow surface to develop undisturbed.
Spears are bright green with lightly browned tips and the thickest part of the stalk gives just slightly when picked up — a spear that hangs limp from the middle is overcooked, and one still rigid from tip to tip is under. Rest for 0 minutes before serving.
No internal temperature target — asparagus is judged by color, tip browning, and a slight bend in the stalk, so the field is omitted rather than guessed (HR-2). The 425°F/10–14 minute window reflects standard high-heat roasting for medium spears (roughly 3/8-inch thick); pencil-thin asparagus finishes in 6–8 minutes and jumbo spears take 15–18.