Preheat the oven to 400 degrees Fahrenheit. Lightly grease a 9 x 13-inch or 3-quart baking dish with nonstick cooking spray, then lay 4 boneless skinless chicken breasts in it.
Combine ¼ cup balsamic vinegar, 2 tablespoons honey, 1 teaspoon minced garlic, 1 tablespoon olive oil, 1 teaspoon Italian seasoning, ½ teaspoon salt, and ¼ teaspoon ground black pepper together in a small bowl.
Pour the sauce over the chicken, then flip the chicken over in the sauce in order to fully coat each breast.
Add 1 cup grape tomatoes to the dish around the chicken, and lay 4-8 slices of tomato on top of the breasts.
Bake uncovered for 20-25 minutes, until the internal temperature of the chicken reaches 165 degrees Fahrenheit. In the last 5 minutes, add 4 slices fresh mozzarella on top of the chicken.
If desired, broil on HIGH for 2-3 minutes, until the cheese is bubbling and browning. Top with chopped fresh basil and serve.
Video
Notes
Leftover Instructions
Fridge: Store leftovers in an airtight container in the refrigerator for up to 5 days.
Freezer: Freeze the chicken with the balsamic sauce in an airtight freezer container for up to 3 months. Thaw completely before reheating. Add fresh tomatoes and mozzarella when reheating for the best texture.
Reheat: Reheat in the microwave in 30-second intervals, or bake at 375°F for 20-30 minutes, until the chicken reaches 165°F. Add fresh tomato slices and mozzarella on top before reheating, if desired.