Slow Cooker Chicken and Mushroom Stroganoff

Name: Slow Cooker Chicken and Mushroom Stroganoff
Prep time: 15 min
Cook time: 8 h
Total time: 8 h
Yield: 4
Ingredients: Ingredients; 2 lb boneless, skinless chicken breasts or thighs, cut into bite-sized pieces; 8 oz mushrooms, sliced; 1 small onion, diced; 2 cloves garlic, minced; 1 can (10.5 oz) cream of mushroom soup; 1 cup chicken broth; 1 tablespoon Worcestershire sauce; 1 teaspoon Dijon mustard; 1/2 teaspoon smoked paprika; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1 cup sour cream (added at the end); 2 tablespoons cornstarch mixed with 2 tablespoons water (optional, for thickening); Cooked egg noodles or rice, for serving; Fresh parsley, chopped (for garnish)