Preheat the oven to 350.
Bring a medium pot of water to a boil.
Add the chicken breast and boil until cooked through, about 20 minutes.
Set aside to cool slightly. Remove any cartilage or tough parts and chunk meat into bite size pieces.
Reserve 1/2 cup of the chicken's cooking liquid and pour out the rest.
In the same pot, mix the milk, cooking liquid (or extra milk if using it), and the soups.
Heat over medium until the sauce is heated through and warm, but not boiling.
While that's heating, mix the butter with the package of dry stuffing mix. Toss to coat and set aside.
When the soups are warm, grease an 8x8 baking pan.
Sprinkle in half the stuffing.
Cover evenly with chicken.
Pour over soups. You may not want to use it all. It's up to you.
Add the remaining stuffing mix to the top.
Bake 25-30 minutes until it's bubbly and warm in the center.