Preheat oven to 350 degrees F. Line a 13x9-inch baking pan with foil, extending the foil over the edges of the pan. Lightly coat foil with cooking spray.

For crust, in a medium bowl beat butter with a mixer on medium to high 30 seconds. Beat in powdered sugar until combined. Add the 1 1/2 cups flour and beat on low until mixture begins to cling together. Stir in the 1/2 cup pecans. Press firmly into bottom of the prepared pan. Bake 14 minutes or until very light golden.

For filling, in a large bowl beat cream cheese with a mixer on medium until fluffy. Beat in maple syrup, bourbon, the 1 Tbsp. flour, and the salt until combined. Beat in eggs on low just until combined. Pour filling over baked crust.

Bake 25 minutes or until edges are puffed and center is set. Cool on a wire rack. Cover and chill for at least 2 hours. Just before serving, use edges of foil to lift uncut bars out of pan. Transfer to a cutting board. Cut into bars. Drizzle with Maple Drizzle and, if desired, top with pecan halves.