Last year, I grew a huge Brussels sprout plant in my garden that never produced one sprout. Thankfully, one of my favorite fall vegetables is everywhere at the farmers markets, so I didn't have to despair too deeply.
Brussels sprouts are great when prepared simply. Heat olive oil in a pan and saute garlic until it's fragrant, then add the halved sprouts, flat side down. Let them cook for a few minutes until they are browned on the flat side, then toss and continue to cook until they turn bright green. Season them with salt and pepper and serve.