I grew up on boiled Brussel sprouts drowned in vinegar, which I still don't mind, but I steam them now. Marinated and char roasted sprouts are the bomb. EVOO, fresh garlic, fresh cracked black pepper, lots of salt, cayenne pepper, balsamic vinegar and lemon. Preheat oven 400F. Heat enough EVOO to coat sprouts, garlic, black and cayenne pepper in a skillet until hot and shut off the heat, let it soak and cool. While it's cooling, cut all sprouts in half. Mix sprouts into oil, add generous salt and balsamic vinegar. Put sprouts on a cookie sheet cut side up and roast until the tops are at least a dark brown. I like a little char.
Edit : forgot to add squeeze fresh lemon over before serving