Skillet Chicken With Mushrooms and Caramelized Onions | Recipe Cart | Recipe Cart

Ingredients

• 5 tablespoons olive oil
• 2 tablespoons plus 2 teaspoons sherry vinegar
• 2 teaspoons honey
• 1 teaspoon Dijon mustard
• 1/4 teaspoon red-pepper flakes
• Kosher salt and black pepper
• 1 1/2 pounds boneless, skinless chicken thighs, cut into 3-inch pieces
• 2 medium yellow onions, thinly sliced (about 4 cups)
• 3/4 pound cremini mushrooms, stems removed and thinly sliced (about 4 cups)
• 1/2 cup fresh flat-leaf parsley or dill leaves and fine stems, roughly chopped
• 1/4 cup grated Parmesan or pecorino (optional)
• Bread or cooked pasta, for serving