Add the soup mix and flour into a zip lock bag, add the chicken breasts and shake it to coat them.
Save the excess flour mix.
Cook the chicken
Heat some oil in a pan - and add the chicken and cook until browned all over. Turn them often, but carefully because it will take off the coating if you aren't!
Take the chicken out and put it in a casserole dish.
Cook the bacon and onions
Add bacon and onions to the pan. Stir constantly over medium heat until onions are soft.
Make the gravy
Blend the saved flour mixture into a cup of water, and add it along with the fresh thyme to the pan with the onions and bacon.
Cook for a couple of minutes, then pour over the chicken in the casserole dish.
Bake
Cover with foil, then bake for about 30 minutes, or until chicken is tender.
Remove the chicken, and stir in sour cream/yogurt,