Bake tart shells according to package instructions and set aside to cool (tip: before baking, poke each shell 2-3 times with a fork to keep them from "puffing up" when you bake them!)
Combine the cream cheese, icing sugar and vanilla in a bowl and beat on low speed until smooth
In a deep cold bowl whip the whipping cream until stiff peaks form (if you're like me and wondered what the heck that meant, just whip it until it starts to stick to your mixer). Add to cream cheese mixture.