In a medium bowl, whisk together the 1/2 cup balsamic vinegar, 1/2 cup water, 1/4 cup olive oil, 1/4 cup dark brown sugar, minced 3-4 cloves fresh garlic , minced 1 tablespoon fresh rosemary, 1/2 teaspoon ground black pepper and 1/2 teaspoon coarse sea salt until the sugar dissolves. Reserve 1/3 cup of the marinade before adding the raw chicken. Set aside for basting.
Place the 1.5 pounds boneless skinless chicken breasts in a shallow baking dish or pan. Remove any excess fat and pat dry with paper towels. Pour the balsamic marinade over the chicken, turning over to ensure all sides are coated with the glaze. Cover and marinade for 1-24 hours. I don't recommend marinating longer than 24 hours to avoid a change in texture.
Preheat the grill to medium-high heat (around 350°F) and oil the grates. Remove the chicken from the marinade and discard extra marinade.
Cook on indirect heat for 20-25 minutes, turning, occasionally, or until internal temperture of chicken reaches 165°F. Right before removing from the grill, baste with the 1/3 cup reserved marinade over direct heat to get a nice char. Cooking times will vary greatly depending on the thickness of the chicken breasts.
Remove and allow to rest for at least 5 minutes before serving. Top with chopped parsley as a garnish, if desired.
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Notes
How To Pan Fry-
Heat a large skillet over medium heat. Add a small amount of oil to prevent sticking. Sear chicken breasts on each side, approximately 5-6 minutes, or until they reach an internal temperature of 165°F.
How to Store
When stored in an airtight container in the refrigerator, cooked chicken thighs will last for up to five days.
Can I Freeze Chicken Thighs?
You can store these chicken thighs in the air fryer in the freezer for up to six months. Just make sure they are in an airtight container.