Preheat oven to 435 degrees F. Place the pan in the oven while it preheats.
Once the oven is up to temp, add the olive oil to the pan and put it back in the oven for 2 minutes. (if using parchment, I often put the olive oil in a small oven-safe dish on the baking sheet)
1 tbsp olive oil
Add the brussel sprouts to the hot pan and bake for 12 minutes. Stir and bake an additional 7-10 minutes depending on how crispy you like it.