01 - 
                Preheat the oven to 350°F. Line an 8x8-inch baking dish with parchment paper, allowing a slight overhang for easy removal.
              
              
              
                02 - 
                Combine graham cracker crumbs, all-purpose flour, sugar, and salt in a mixing bowl. Add melted butter and mix until the crumbs are well coated and evenly moistened.
              
              
              
                03 - 
                Firmly press two-thirds of the crumb mixture into the bottom of the prepared pan, creating an even layer.
              
              
              
                04 - 
                In a separate bowl, beat softened cream cheese until smooth. Blend in sugar, then incorporate eggs one at a time, followed by lemon zest, lemon juice, and vanilla extract. Mix until the filling is silky and fully combined.
              
              
              
                05 - 
                Pour the cream cheese filling evenly over the pressed crust. Sprinkle the remaining crumb mixture evenly across the top.
              
              
              
                06 - 
                Bake in the preheated oven for 30 to 35 minutes, or until the center is set but still slightly jiggly.
              
              
              
                07 - 
                Allow the bars to cool at room temperature for 1 hour. Transfer to the refrigerator and chill for at least 3 hours before serving.
              
              
              
                08 - 
                Lift the bars from the pan using the parchment overhang. Slice and serve as desired. Optionally, dust with powdered sugar or garnish with fresh berries.