Bake asparagus at 350°F for about 15–20 minutes, checking starting around 12 minutes so it turns tender-crisp rather than soggy.

Quick Scoop

For a standard bunch of asparagus at 350°F, this timing works well:

  • Thin spears: 12–15 minutes until bright green and just tender.
  • Medium spears: 15–20 minutes, with light browning on the tips.
  • Thick spears: 20–25 minutes if you like them very tender, especially when baked in a deeper dish.

Simple step-by-step

  1. Preheat oven to 350°F and line a baking sheet or lightly oil a baking dish.
  1. Wash asparagus, pat dry, and trim the tough ends.
  1. Toss with olive oil, salt, pepper, and optional garlic or Parmesan, then spread in a single layer.
  1. Bake 15–20 minutes, checking at 12 minutes and pulling when spears are tender, lightly browned, and still a bit crisp when pierced with a fork.

Tiny extra tips

  • If you like more caramelized, crisp edges, leave them in toward the upper end of the time range or broil for 1–2 minutes at the end.
  • If you’re using an air fryer at 350°F, asparagus cooks faster—usually 7–10 minutes, so check early.

Information gathered from public forums or data available on the internet and portrayed here.