Preheat your oven to 350 degrees. Grease a 9x13 pan with coconut oil or butter. If you would like to pull the bars out of the pan to cut them also line the pan with parchment paper. Set aside.

In a food processor, using a push chopper or a knife and cutting board finely chop 1/3 cup pecans. Then, coarsely chop 1 cup of pecans. Set aside.

In the bowl of your stand mixer add the butter and brown sugar. Beat until well blended together. Add the gluten free flour and finely chopped pecans and beat until a dough forms.

Press the dough evenly into the 9x13 pan. Bake at 350 degrees for 25 minutes or until the edges are golden brown.

While the crust is baking make the filling. In your stand mixer add the granulated sugar, brown sugar, gluten free flour, salt, maple syrup, eggs and vanilla. Beat until the ingredients are mixed into a runny batter. Add the coarsely chopped pecans and beat just until they are blended.

When the crust comes out of the oven pour the filling mixture over top.

Return the 9x13 pan to the oven and bake at 350 degrees for 30-35 minutes. The edges will pull away from the sides and be browned when the bars are done.

Cool completely before cutting into bars.