Preheat the oven to 400 degrees Fahrenheit. Cut off the very tip of the stem of each brussel sprout and then cut it in half lengthwise. Toss it in a large bowl with the salami, parmesan, olive oil, salt, and pepper until coated. Transfer the contents to a small casserole dish or ceramic baker and place the dish in the oven.
Roast until the brussel sprouts have turned golden and the tips are a nice golden brown, about 35 to 40 minutes. Remove and allow to cool for 5 minutes before serving.