In a small bowl, combine the gelatin with the water. Let it puff up and rehydrate, then mix until diluted. If the gelatin won’t dissolve completely, you may want to place over a water bath for a minute or two.
Fit a mixer with the whisk attachment and whip the cream cheese on medium speed for a couple minutes to soften. Incorporate the heavy whipping cream and sugar, continue beating until well mixed and it holds steady and hard peaks, as if you were making whipped cream, being careful not to over beat.
Reduce speed to low, add the rehydrated gelatin and mix just until it is all incorporated, puffed up and uniform.
Turn out into the cooled pie crusts and chill for at least an hour.