Chicken Caprese Skillet

Ingredients (12)

• 1/2 cup plus 1 tablespoon balsamic vinegar divided
• 1 tablespoon plus 1 teaspoon honey divided
• 4 small boneless skinless chicken breasts (24 oz)
• 11/4 teaspoons kosher salt divided
• 1/2 teaspoon ground black pepper divided
• 2 tablespoons extra virgin olive oil divided
• 1 small red onion diced (about 1 cup)
• 4 cloves garlic minced (about 4 teaspoons)
• 4 cups sliced tomatoes: halved cherry or grape tomatoes (2 pints) or 1/2- inch- diced peak season plum or other garden tomatoes
• 1/4 teaspoon dried thyme
• 4 ounces part- skim mozzarella pearls (scant 1 cup) or 4 ounces block- style part- skim mozzarella cheese cut into bite-sized cubes
• 1/4 cup tightly packed fresh basil leaves thinly sliced