Chicken Bacon Ranch Rice Casserole

Name: Chicken Bacon Ranch Rice Casserole
Ingredients: Cooking spray; 1 cup long-grain white rice; 1 medium yellow onion; 2 cloves garlic; 8 ounces sharp cheddar cheese, shredded (about 2 cups); 1 pound boneless, skinless chicken thighs (about 4); 6 slices bacon (about 6 ounces, not thick-cut); 1 tablespoon unsalted butter; 3 tablespoons all-purpose flour; 1 1/2 cups low-sodium chicken broth; 1 1/4 cups whole milk; 1 (1-ounce) packet ranch seasoning and salad dressing mix (about 3 tablespoons); 1 teaspoon kosher salt, divided; 1/4 teaspoon freshly ground black pepper; Chopped fresh parsley leaves, for garnish (optional)