1-Preheat oven to 350°F: Preheat oven to 350°F. Line a 9×9-inch baking dish with parchment paper, including up the sides.
2-In a medium bowl, combine graham cracker: In a medium bowl, combine graham cracker crumbs, butter, and sugar. Mix until it resembles wet sand. Press into the lined baking dish.
3-In a large bowl, using a hand: In a large bowl, using a hand mixer, beat cream cheese, eggs, sugar, lemon juice*, vanilla, and salt until smooth. Spread the cream cheese filling evenly over the crust.
4-Evenly top with blueberries: Evenly top with blueberries.
5-In a medium bowl, whisk together flour,: In a medium bowl, whisk together flour, brown sugar, and salt. Stir in melted butter until a wet, crumbly dough forms.
6-Sprinkle small crumbles of topping evenly over: Sprinkle small crumbles of topping evenly over the blueberries.
7-Bake for 35-40 minutes, or until the: Bake for 35-40 minutes, or until the filling is set and the topping is golden brown.
8-Transfer to a wire rack and let: Transfer to a wire rack and let cool completely, about an hour. Once cooled, transfer the baking dish to the refrigerator and chill for an additional hour before serving.
9-Serve chilled: Serve chilled.