Mom pours dry stuffing mix over raw chicken in casserole. It tastes way better than it sounds

2 pounds boneless, skinless chicken breasts (about 4–6 pieces)
1 box (6 oz) stuffing mix (chicken or savory herb flavor)
1 can (10.5 oz) cream of chicken soup
1 can (10.5 oz) cream of mushroom or cream of celery soup
1 1/2 cups low-sodium chicken broth (divided: 1 cup + 1/2 cup)
1/2 cup milk
2 tablespoons butter, melted (plus extra for greasing the dish)
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon dried thyme (optional)
1/2 teaspoon dried parsley (optional, plus extra for garnish)
1/2 teaspoon salt (or to taste, depending on how salty your soups and stuffing are)
1/2 teaspoon black pepper
2 cups frozen mixed vegetables, thawed and drained (optional but recommended)
Directions