Try this homemade Make Ahead Mashed Potato Casserole recipe the whole family will love. Made with potatoes, cream cheese, butter and green onion. Easy s…
This Make Ahead Mashed Potato Casserole relies on simple, everyday ingredients such as potatoes (about 3 1/2 lbs), cream cheese, butter and chopped green onion. It comes together quickly and makes 4 servings, at about 639 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