In a large mixing bowl, cream together butter, maple sugar and brown sugar. Add the salt, vanilla and eggs and combine. Add the flour, baking soda, powder and combine. Scrape the bowl with a rubber spatula a few times, making sure everything is thoroughly combined.
Add the pecans and chocolate chips and combine gently.
Spray a 9 x 13-inch baking pan with cooking spray. Spread the dough into the pan as best you can.
Bake in a preheated 350 degree F oven for about 35 minutes or until it is golden brown. Let cool almost completely before cutting into squares.