01 - In a medium bowl, combine graham cracker crumbs, melted butter, 2 tablespoons sugar, and lemon zest. Mix until well blended and the mixture resembles wet sand. Press firmly into the bottom of a 9-inch springform pan, creating an even layer. Refrigerate while preparing the filling.
02 - In a large bowl, beat the softened cream cheese and 3/4 cup sugar until completely smooth and creamy, approximately 2-3 minutes. Add lemon juice, lemon zest, and vanilla extract. Mix until fully incorporated and no lumps remain.
03 - In a separate chilled bowl, whip the cold heavy cream using a hand mixer or stand mixer until stiff peaks form. Be careful not to over-whip. The cream should hold its shape when the whisk is lifted.
04 - Gently fold the whipped cream into the cream cheese mixture using a spatula. Use a folding motion to incorporate without deflating the air in the whipped cream. Continue until fully combined and the mixture is smooth and uniform.
05 - Carefully fold 1 2/3 cups fresh blueberries into the cream mixture. Use gentle folding motions to distribute the berries evenly without crushing them. The blueberries should remain whole for optimal texture and appearance.
06 - Pour the blueberry cream filling over the chilled crust in the springform pan. Use a spatula to smooth the top, creating an even surface. Tap the pan gently on the counter to release any air bubbles.
07 - Cover the springform pan with plastic wrap or foil. Refrigerate for at least 4 hours, or preferably overnight, until the filling is completely set and firm to the touch. The cake should hold its shape when sliced.
08 - Remove the cake from the springform pan by running a knife around the edge, then releasing the side. Top with the remaining 3/4 cup fresh blueberries, arranging them evenly. Sprinkle with lemon zest and garnish with whipped cream if desired. Slice and serve chilled.