Try this homemade Summer Squash Casserole recipe the whole family will love. Made with onion, sour cream, margarine and salt. Easy step-by-step instruct…
This Summer Squash Casserole relies on simple, everyday ingredients such as medium squash, grated, large onion, chopped, (8 oz.) carton sour cream and margarine. It comes together quickly and makes 4 servings, at about 506 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026