Homemade marshmallow buttercream frosting is my favorite recipe when I want something quick and easy. It's the perfect frosting for just about any flavor, and is ready in a couple of minutes.
Use a spatula to empty all of the marshmallow creme into a mixing bowl. Whisk marshmallow creme in the bowl of a standing mixer for 1 minute.
Add butter, 1-2 tablespoons at a time, mixing until each addition is incorporated. Scrape down the bowl several times while mixing.
When all of the butter has been fully mixed into the marshmallow creme, add vanilla extract and powdered sugar and beat until combined.
Pipe frosting on top of cooled cupcakes.
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Notes
Storage:This delicious marshmallow frosting will keep for up to 4 days in the refrigerator. Re-whip before using. Notes:Do not let the butter soften for a long time. It will make the creamy frosting too runny. If this happens, place it in the refrigerator for up to 1 hour to set, then rewhip in a large bowl before piping. Unsalted butter works best in this simple recipe because it has less water content and makes the perfect consistency.