Cheesecake Bars

Name: Cheesecake Bars
Prep time: 20 min
Cook time: 75 min
Total time: 95 min
Yield: 16 squares
Ingredients: For the Crust:; 1¼ cups graham cracker crumbs, from 10 whole crackers; 4 tablespoons unsalted butter, melted; ¼ cup packed dark brown sugar; ⅛ teaspoon salt; For the Filling:; 16 ounces (2 8-oz. packages) cream cheese, at room temperature; 1 cup granulated sugar; 1½ tablespoons all purpose flour; ¼ cup sour cream; 3 large eggs; 2½ teaspoons vanilla extract; ½ teaspoon packed freshly grated lemon zest, from 1 lemon; 1 teaspoon lemon juice; ⅛ teaspoon salt