Perfect Marinated Tomatoes with Mozzarella

tomatoes (on the vine), sliced ½-inch thick

extra-virgin olive oil

balsamic vinegar

honey (optional)

finely chopped red onion

large clove (or two small cloves) garlic, finely minced or crushed

minced fresh parsley, plus additional for garnish

minced fresh basil, plus additional for garnish

 (16 oz.) log of fresh mozzarella cheese, diced

Salt and freshly ground black pepper,