Classic Southern-Style Braised Chicken with Sweet Onions

Ingredients

• 2 1/2 lbs bone-in, skinless chicken thighs
• 1 (16 oz) jar sweet pickled onions, drained, reserving 2 tbsp brine
• 4 cloves garlic, minced
• 2 medium carrots, peeled and sliced
• 2 ribs celery, sliced
• 1 small yellow onion, thinly sliced
• 2 tbsp reserved onion brine
• 1/4 cup chicken broth
• 2 tbsp unsalted butter or olive oil
• 2 tbsp brown sugar
• 1 tbsp Dijon mustard
• 1 tbsp Worcestershire sauce
• 1 tsp dried thyme
• 1/2 tsp dried oregano
• 1 tsp kosher salt
• 1/2 tsp black pepper
• 2 tbsp fresh parsley, chopped