Squash Casserole - cooking recipe

Ingredients

1 medium onion
3 to 4 yellow and/or zucchini squash
1 can cream of mushroom soup
1 can water chestnuts, drained
1 (8 oz.) carton sour cream
1 (8 oz.) canister Stove Top stuffing

Preparation

Slice onion and squash; steam together for 5 to 8 minutes. Mix rest of ingredients, except stuffing.
Spread half of stuffing on bottom of a casserole dish.
Add squash mixture on top.
Spread remaining stuffing on top of squash.
Bake at 350\u00b0 for 20 minutes.