Preheat oven to 350F and grease an 8" square pan (no greasing necessary if using a silicone pan!).
Mix together pumpkin, tahini, Swerve, vanilla and apple cider vinegar.
Life pro tip: measure sticky things with one of these measuring cup thingies.
I saw Alton Brown do this years ago, and haven't looked back.
In a separate dish, mix together coconut flour, spices, and baking powder.
Make sure everything is evenly distributed.
Stir dry ingredients into the wet mixture and stir for a minute or so, to be sure that everything is evenly mixed.
You really can't overmix this recipe.
Plop into the brownie pan, and spread evenly.
You'll want to smooth the top, so there are no peaks or valleys or otherwise rough spots.
Bake for about 40 minutes.