Preheat oven to 375° and spray a 9- x-13" baking dish with cooking spray. In a large bowl, combine cream cheese, sugar, lemon juice, lemon zest, eggs, sour cream, vanilla, and kosher salt. Using a hand mixer, mix all ingredients together until smooth.
Press one sheet crescent dough into prepared baking dish, making sure to stretch to reach all edges of baking dish. If dough is perforated, pinch all perforations closed.
Spread cheesecake mixture in an even layer and top evenly with blueberries then, top with another layer of crescent dough.
Bake until crescent is golden and cooked through, 30 to 35 minutes.
Let cool and slice into squares. Sprinkle with powdered sugar and serve.
Recipe by 5* trending recipes with videos at https://food.theffeed.com/2019/03/03/lemon-blueberry-cheesecake-bars/