Unbelievable Squash Casserole

Preheat oven to 350 degrees F (175 degrees C). Grease a baking dish.

Heat oil in a skillet over medium heat; cook and stir squash and onion until tender 8 to 10 minutes. Add water and simmer to soften squash 2 to 4 minutes. Stir cream of chicken soup sour cream and Cheddar cheese into squash mixture; mix well.

Transfer squash mixture to the prepared baking dish; top with stuffing mix.

Bake in the preheated oven until cheese is bubbling and stuffing is browned about 30 minutes.