For a really thick brownie, I suggest doubling this recipe and cooking for an additional 5 to 10 minutes.Preheat the oven to 350F and line a brownie pan (I used a 9x9 inch) with parchment paper.
In a bowl, combine the wet ingredients, including the sweet potato, almond butter, vanilla and maple syrup. Next, add the almond flour, cocoa powder, and baking powder. Stir until a very thick batter is formed.
Mix in the chocolate chips as desired, and transfer to your baking tin.
Bake for approximately 30 minutes until set. Allow to cool before slicing and enjoy.