I've enjoyed this casserole so much and just made it again today. It makes many servings - 8-10 I'd guess - and is very satisfying and filling. It's very low carb; I haven't figured out exact numbers, but you will be able to see it falls nicely into this WOE.

4 chicken breasts, precooked and cubed (I just simmer them in salted water for 25 minutes)
2 cans Del Monte French style seasoned green beans, drained (2 net carbs per 1/2 C.)
1 or 2 cups cubed butternut squash (defrosted if frozen) (5 carbs per 1/2 C.)
1 cup sour cream
1 or 2 cups shredded cheese

Remember to season chicken to your taste before layering on the sour cream. Today I used rosemary, last time it was a seasoned salt.

Layer the greens beans first, then squash, chicken, sour cream and last cheese. Cook at 350 degrees for 50 minutes.

You know, I almost never use any canned veg and was just reminded of this type of seasoned green beans recently. They add a very nice and unusual flavour to this dish.