Prepare the graham cracker base by combining graham cracker crumbs, melted butter, and granulated sugar in a bowl. Mix until the mixture resembles wet sand and holds together when pressed.
Divide the graham cracker mixture among 6 parfait glasses or small mason jars, using about 3-4 tablespoons per glass. Press down gently with the back of a spoon to create an even layer.
Beat the cream cheese in a large mixing bowl using an electric mixer until smooth and fluffy, about 2 minutes. Add the powdered sugar gradually and continue beating until well incorporated.
Mix in the vanilla extract and lemon zest, ensuring they’re evenly distributed throughout the cream cheese mixture.
Whip the heavy cream in a separate bowl until stiff peaks form, then gently fold into the cream cheese mixture using a spatula. Be careful not to deflate the whipped cream – use slow, sweeping motions.
Spoon the cheesecake filling into each glass, creating a layer about twice as thick as the graham cracker base. Smooth the tops with the back of a spoon.
Add a generous layer of lemon curd (about 2 tablespoons) on top of each cheesecake layer, spreading it gently to create an even surface.
Refrigerate the parfaits for at least 2 hours or overnight to allow the layers to set properly and flavors to meld.
Just before serving, top each parfait with fresh berries and a small mint leaf if desired. The contrast between the sweet-tart lemon and the fresh berries creates a perfect finishing touch.