Crush the graham crackers into fine crumbs using a zip-top bag and rolling pin, then toast them lightly in a dry skillet over medium heat until fragrant, about 2 minutes. Let cool.
Melt the butter in a small saucepan or microwave and pour it over the cooled crumbs. Mix thoroughly until the crumbs are evenly coated and hold together when pressed.
Press the crumb mixture firmly into the bottom of a springform pan, creating an even crust. Chill in the fridge for 15 minutes to set.
In a large bowl, beat the softened cream cheese with a whisk until smooth and creamy, about 2 minutes. Add sugar and continue to beat until combined and fluffy.
Stir in fresh lemon juice and lemon zest to brighten the mixture. Gently fold in the whipped heavy cream with a spatula until fully incorporated, being careful to maintain the airy texture.
Pour the filling over the chilled crust, smoothing the top with a spatula. Tap the pan gently on the counter to release air bubbles and ensure an even surface.
Cover loosely with plastic wrap and refrigerate for at least 4 hours or overnight until set. The filling should be firm, with a smooth, glossy surface.
Carefully remove the sides of the springform pan. Decorate the top with fresh berries or other toppings as desired.
Slice with a warm, damp knife for clean cuts and serve chilled. Enjoy the creamy, tangy bite of this classic dessert.
