what temperature should you roast brussel sprouts at?
Ready In. 1  Preheat oven to 400 degrees F (205 degrees C). 2  Place trimmed Brussels sprouts, olive oil, kosher salt, and pepper in a large resealable plastic bag. 3  Roast in the preheated oven for 30 to 45 minutes, shaking pan every 5 to 7 minutes for even browning.