Prepare crumble by placing graham crackers in food processor & crushing to semi-coarse crumbs
Add in melted butter & pulse to combine
Add 1-2 tbsp to bottom of each glass - set aside
Place cream cheese in mixer bowl & beat until smooth
Slowly add in sweetened condensed milk while beating & continue mixing until fully incorporated
Continue beating & add in lemon juice & vanilla extract.
Scrape down sides & beat again for another 30 seconds to be sure all in combined & there are no lumps.
Spoon into each glass on top of graham cracker crumb layer
Top with pie filling
Cover & refrigerate at least 2 hours before serving