There are many different recipes that can be used as a marinade for top-round steak. Some of the most popular recipes include garlic, olive oil, and lemon juice. Another popular recipe is a mixture of soy sauce, Worcestershire sauce, and red wine. Any of these recipes would work well to add flavor and moisture to the steak. It is also important to make sure that the meat is completely covered in the marinade, and that it is refrigerated for the appropriate length of time. Usually, a marinade should be left on the meat for at least an hour, but no more than 12 hours.