Summertime Caprese Chicken

INGREDIENTS

Chicken:

1 8 ounce container

plain yogurt

3 tbsp

balsamic vinegar

thin-cut boneless (skinless chicken breast halves (about 1 1/2 pounds total))

Tomato-Mozzarella Topping:

1 tbsp

extra-virgin olive oil

medium-size onion (cut into 16 wedges)

1/4 cup

balsamic vinegar

2 tbsp

water

1 lb

plum tomatoes (cored, seeded and chopped (about 4 cups))

1 tsp

salt

1/2 tsp

black pepper

8 oz

fresh mozzarella cheese (usually packed in water, cut into 1/2-inch cubes)

1 cup

loosely packed fresh basil leaves (chopped)