Try this homemade Company Squash Casserole recipe the whole family will love. Made with yellow squash, margarine, milk and mushrooms. Easy step-by-step …
This Company Squash Casserole relies on simple, everyday ingredients such as margarine, divided, milk, small can mushrooms, drained and medium onion, chopped. It comes together quickly and makes 4 servings, at about 227 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