Pulse the garlic, three-quarters of the bacon and half of the onion in a food processor until finely chopped. Add the bread, cheese and egg; pulse to make a smooth paste. Transfer to a large bowl; add the turkey and mix with your hands. Form into four 1-inch-thick oval patties.
Cook the remaining bacon in a large nonstick skillet over medium heat until browned, 4 minutes. Increase the heat to high and add the patties. Cover and cook until golden brown, 4 minutes; flip and cook, uncovered, 3 to 4 more minutes. Transfer the patties to a plate.
Add the cabbage and the remaining onion to the skillet; cook, stirring occasionally, until the cabbage wilts, 4 minutes. Reduce the heat to medium high and add the tomatoes, chicken broth and Worcestershire sauce. Cover and bring to a boil, then uncover and cook until slightly reduced, 4 minutes. Return the patties to the skillet and simmer until cooked through, 10 minutes. Top with the parsley.