Try this homemade Peanut Butter Marshmallow Bars recipe the whole family will love. Made with Allsweet margarine, peanut butter, marshmallows and cereal…
This Peanut Butter Marshmallow Bars relies on simple, everyday ingredients such as (1/4 c.) allsweet margarine, swift's oz peanut butter and marshmallows. It comes together quickly and makes 4 servings, at about 176 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