In a large mixing bowl, beat the vegetable shortening until smooth and fluffy (about 2–3 minutes).

Mix in the Smucker’s Marshmallow Topping and vanilla extract. Beat until fully incorporated and fluffy.

Slowly add the powdered sugar, ½ cup at a time, beating well between additions. Scrape the bowl as needed.

If the frosting is too thick, add a tiny splash of non-dairy milk (like almond or oat) to thin it slightly. If too thin, add more powdered sugar.

Add a small pinch of salt to balance the sweetness if desired.