Spread the cookie dough out in a thin even layer in the bottom of a nonstick 9x13" baking pan. I recommend using clean hands to do this first, then finishing up with a spatula as the dough is VERY sticky.
1 16.5 oz roll refrigerated sugar cookie dough
Bake the cookie dough at 350° for 20 minutes. Carefully remove from the oven, then set aside to cool.
Add the sugar, salt, baking soda, and flour to a mixing bowl and whisk them together until evenly combined.
1 cup brown sugar, 1/2 tsp salt, 1/2 tsp baking powder, 2 tbsp flour
Add the eggs, vanilla extract, and melted butter to the flour mixture and stir until everything's evenly combined.
2 large eggs, 1 tsp vanilla extract, 2 tbsp melted butter
Add the pecans, stirring again until evenly incorporated.
2 cups chopped pecan pieces
Transfer the pecan filling to the baked cookie crust and spread out in an even layer overtop.
Bake at 350° for 15 minutes.
Carefully remove the hot dish from the oven, and let it rest and cool for 2 hours undisturbed.
Slice into squares, serve, and enjoy!