In a small bowl, stir together the crushed graham crackers and melted butter until combined.
Divide the graham cracker mixture evenly among cocktail glasses.
In the bowl of a stand mixer fitted with the paddle attachment, beat together the cream cheese, heavy cream, sugar, lemon juice, lemon zest and vanilla extract until smooth and creamy. (Alternately, use a handheld mixer to combine the ingredients.) Transfer the mixture to a piping bag or sealable plastic bag.
Pipe the cheesecake filling atop the graham cracker mixture.
Top the cheesecake with a dollop of whipped cream and sprinkles then serve.