Preheat a waffle iron.
Using a KitchenAid Stand mixer (or mix by hand), eggs, buttermilk, unsalted butter, vanilla extract, and pumpkin puree for 30 seconds on STIR mode.
In a separate bowl, combine all the dry ingredients, all-purpose flour, pumpkin pie spice, sugar, baking powder, baking soda, and salt.
Add the dry ingredients to the wet ingredients, mix on "STIR" setting for 10 seconds then bump up to speed 2 for an additional 20 seconds. Scrape down the sides of the bowl and mix again for another 5-10 seconds.
Spray the waffle iron with cooking spray, ladle 1 cup batter into waffle iron. Cook for 3 minutes or until golden in color. Repeat until all the batter is used.
Top each waffle with freshly whipped cream, pecans, and salted maple caramel sauce.