Whip heavy cream with a little sugar and vanilla to soft peaks. Bloom some gelatin (1/2 sheet per cup of cream or so), squeeze out the excess water, and dissolve it in a saucepan with a little water (for 1/2 sheet, use 1 1/2 teaspoons water). When the melted gelatin is hot, add it to the cream, with the mixer running, in a thin stream. Whip to stiff peaks. This should hold up well. I wouldn't recommend frosting simply because it would be too sweet.
I have never heard of a frosting on a cheesecake but I would try a stabilized whipped cream icing. Food52 has one. You can also google this. Some recipes have cornstarch or gelatin.
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