Preheat oven to 350F; line the bottom and sides of 13×9 pan with aluminum foil; have 2 inches of over hang on the sides; lightly grease with cooking spray
Pulse flour, granulated sugar, and salt in a food processor until combined; add cubed butter; pulse until mixture is crumbly; reserve 1 cup of the flour mixture; press remaining flour mixture onto the bottom of prepared pan
Bake in preheated oven for 25-30 minutes until light brown; spread pie filling over crust; mix together the reserved 1 cup of flour mixture and pecans; sprinkle pecan mixture evenly over filling
Bake in preheated oven for 40-45 minutes until golden brown; cool completely in pan on wire rack for 1 hour; lift baked bars from pan using the foil sides
Stir together powdered sugar, 4 teaspoons milk, and almond extract; drizzle over pecan mixture; cut into bars
