02Whisk the egg and fresh herbs in a large bowl. Add the turkey, panko, grated cheese, 1/2 cup ketchup, 2 tablespoons balsamic vinegar and the cooled vegetables; mix until just combined.03Gently press the mixture into a 9-by-5-inch loaf pan. Whisk the remaining 1/4 cup ketchup, 1/4 cup balsamic vinegar and 1/4 teaspoon red pepper flakes in a small bowl; brush the mixture over the entire loaf. Bake for 1 to 1 1/4 hours. Let rest for 10 minutes before slicing.