Rinse spears under cold water and pat completely dry — moisture causes steaming, not browning. Trim woody ends with a knife or bend each spear near the base until it snaps at the natural breaking point. For thick spears, note that thickness affects cook time: thicker means longer for the same doneness. Set out oil, salt, and pepper before you start — the cook moves fast once the pan is hot.

Heat a heavy skillet (cast iron, carbon steel, or thick stainless) over medium-high to high heat. Add a thin layer of oil and heat until shimmering. Add asparagus in a single layer — don't crowd the pan; cook in batches if needed. Toss and rotate frequently so spears brown and char lightly on multiple sides. Cook 5–8 minutes for most spears, up to 10 minutes for thick ones. Lower heat if the pan smokes heavily or spears risk burning before cooking through. Season with salt and black pepper during or right after cooking. For softer results, reduce heat after initial browning and cook a few minutes more.

Asparagus is done when spears are browned all over, lightly charred in spots, and crisp-tender — they yield easily but still have a slight snap at the center. For softer results, cook a few extra minutes over reduced heat. Transfer to a plate as they finish; serve immediately, as texture and color fade fast. A squeeze of lemon or lime brightens the dish. Avoid: adding spears to an under-hot pan, overcrowding, and neglecting to toss frequently.