If you're looking for ways to make Brussels sprouts more flavorful, try adding some of these optional add-ins to your next Brussels sprouts side dish. When sauteing, add in a bit of bacon, pancetta, or prosciutto. After steaming Brussels sprouts, mix in freshly chopped or dried herbs such as chives, dill, or thyme. Before roasting your sprouts, add a few sprinkles of balsamic vinegar. The best thing to do is experiment with different flavors and see what you like.