Lightly grease a 6-quart crock pot with cooking spray.
Combine onions, garlic, mushrooms, and cubed chicken in the crock pot and season with salt and pepper; mix and set aside.
In a mixing bowl, whisk to combine the chicken broth, Worcestershire sauce, dijon mustard, wine, and flour; whisk until thoroughly incorporated.
Pour the broth mixture over the chicken in the crock pot and stir to combine.
Add the bay leaf and cover with a lid.
Cook on LOW for 3 to 4 hours, or until the chicken is cooked through; stir in the egg noodles and continue to cook for 30 minutes, or until the noodles are tender.
Remove the bay leaf and stir in the yogurt.
Garnish with fresh parsley and serve.
Notes
If cooking on HIGH, cook for 2 to 2.5 hours, or until the chicken is cooked through; stir in the egg noodles and cook for 20 minutes or until the noodles are done.
For the wine, I suggest using Sauvignon Blanc or Chardonnay. If you don't want to use wine, add more chicken broth.
I used chicken breasts for this recipe, but you can also use boneless chicken thighs.