Hi!
Not sure if this was the case, but MMF will be very soft when you first finish making it. It should sit for at least a few hours to firm up a bit before using. Otherwise, maybe you added too much water, or not enough powdered sugar. It really all depends on the region you live in. Where I live, in NOLA, it is very humid so I use a little more powdered sugar. Play around with it to see what ratios work best, and you will get it that MMF to work for you! LMMF (artisan’s recipe) works wonderfully, but I prefer to do without the store bought fondant in effort to save $.
Hope that helps!
Robin
