For the crust: Preheat oven to 350 degrees.
Line a 9x9 baking pan with parchment paper leaving an overhand on two sides for easy removal. Spray with non-stick cooking spray.
In a medium bowl, combine flour, butter, sugar and salt. Beat until large coarse crumbs form.
Press mixture into bottom and 1/2 inch up the sides of prepared pan .
Bake 18-20 minutes until edges are golden brown. Cool.
For the topping: In a medium saucepan combine maple syrup, brown sugar, butter, cream and salt. Bring to a boil. Boil 1 minute.
Remove from heat and mix in vanilla and pecans.
Pour topping onto crust. Bake for 15 minutes at 350 degrees until topping is bubbling.
Cool in pan on wire rack.
While bars are cooling make chocolate drizzle. Place chocolate chips and shortening in microwave safe bowl.
Microwave in 30 second intervals, stirring in between, until melted and smooth.
Remove bars from pan. Drizzle with chocolate and cut into bars.