In a large mixing bowl, beat heavy cream until soft peaks form.
Blend in mascarpone cream.
Blend in powdered sugar to taste.
This is a super simple recipe but, there's one important thing to keep in mind. If you over whip the cream it will curdle and fall apart. This will cause you to have to start all over. So make sure to keep an eye on the cream, and check it often to see if peaks are forming. Soft peaks will be when you pull the beater out and it stands up but falls back just a little.
It's quickest and easiest to make this fruit dip in a stand mixer, but you can do it by hand, it will just take a little longer!
Make sure that all of the ingredients are well combined and the dip is silky smooth.