In a stand mixer beat the cream cheese on high until smooth. Reduced speed to low and slowly pour in sweetened condensed milk and beat on low speed until completely incorporated.
Roll limes on a clean cutting board to loosen juice and cut, squeezing directly into the mixing bowl. Beat on low speed until completely incorporated.
Pulse graham crackers in food processor until fine crumbs and drizzle in 1 Tbs butter melted pulsing until you have a mixture that resembles wet sand.
Add a layer of graham cracker crumbs to the bottom of your desired glass (the amount needed depends on the size of your glass), spoon the key lime pie filling on top and repeat with another layer of graham cracker crumbs and pie filling.
Top with whipped cream and a lime wedge for serving if desired.