How Long to Cook Brussels Sprouts
Fresh Brussels sprouts, halved or whole.
The Short Answer
In the oven at 425°F, brussels sprouts takes 20–30 minutes. Scroll down for all cooking methods, detailed instructions, and tips from the Professor.
Cooking Methods
🔥 Oven
Temperature: 425°F
Time: 20–30 minutes
Halve, toss with olive oil, salt, pepper. Place cut-side down on sheet pan. Do not overcrowd. Roast until deeply browned on the cut side.
💨 Air Fryer
Temperature: 375°F
Time: 12–18 minutes
Halve and toss with oil. Shake basket every 5 minutes. Done when crispy on the outside and tender inside.
The secret to Brussels sprouts people actually enjoy: cut-side DOWN, high heat, and do not crowd the pan. Crowding creates steam instead of caramelization, and steam is the enemy of crispy sprouts.
Frequently Asked Questions
Overcooking breaks down sulfur compounds in the sprouts, producing that familiar unpleasant smell. Roasting at high heat cooks them quickly enough to avoid this. Boiling is the worst method for smell.
The Bottom Line
Brussels Sprouts is straightforward to cook when you know the time and temperature. Use the method that fits your equipment and schedule, and always let the food rest before cutting or serving. Resting allows juices to redistribute and carryover cooking to finish the job.
Source: Culinary reference | Last verified: March 19, 2026