Step 1

For the crust, combine the graham cracker crumbs, sugar, and butter and press into an 8'' square baking pan.

Step 2

Bake at 350 degrees F for 10 minutes. Allow to cool before adding filling.

Step 3

Add cream cheese to a mixing bowl and beat well with electric beaters until smooth. Add both cans of sweetened condensed milk, lime juice, and lime zest and mix again until smooth.

Step 4

Pour over prepared graham cracker crust and bake in preheated oven for 10 minutes. Allow to cool for about 30 minutes, then refrigerate for at least 3 hours, before serving.

Step 5

Top with fresh whipped cream, if desired.