The Kentucky Hot Brown, an open-face sandwich, originated at the Brown Hotel in Louisville, Kentucky, early in the 1900s. There are as many versions of the dish as there are cooks who make it. This is my favorite as it uses both turkey and ham. Use more bacon if you would like more than one slice on each sandwich. You can skip the 1/4 cup cheese over the tomatoes, if desired. We think it adds a nice extra touch. If you skip this step, just remove from the oven after 10 minutes and lay the tomato slices and bacon on top of the sandwich.