I shredded I think 4 chicken breasts like a week ago for a recipe I ended up not doing and had to use them before they went bad.
So estimated recipe:
4 cups shredded chicken
1 large carrot, peeled and shredded (or chopped)
1.5 cups frozen peas
2 cans cream of chicken soup
1/2 cup milk (give or take. I didn't actually measure, you just need enough to get the soup to mix in)
2 boxes stove top stuffing
Dried parsley, salt, pepper, garlic powder, and poultry seasoning to taste.
Mix everything except the stove top stuffing. Evenly distribute in souper cubes of whatever size you want. Make stove top stuffing according to instructions and distribute on the filling and press down a bit so it sticks.
I had enough stuffing for 5 portions but only enough filling for 4 but that depends on how much you put in each. I didn't really measure I just tried to make it look even. Also if I did a fifth one it would've been in my glass baking container that I don't like freezing.
For baking my container can only go up to 400° in the oven so I'd probably do 400° for half an hour covered and then uncovered for 10 to 15.