Wash and peel the sweet potato.
Add to a small pot of boiling water on medium heat. Boil until soft (approx. 20 minutes).
Drain, mash until smooth (it should be ½ cup).
Set aside to cool.
Preheat the oven at 350°F.
To a large bowl, add the cooled mashed sweet potato, peanut butter, honey and eggs.
Mix fully until smooth.
To a separate bowl, add the all purpose flour, baking powder, cocoa powder and salt. Mix.
Add the dry ingredients to the wet batter.
Combine fully.
Fold in the chocolate chips.
Add the batter to an 8x8 inch baking dish lined with parchment paper or coated with butter.
Press down gently to remove any air pockets.
Bake for 25 to 30 minutes.
Check for doneness with a toothpick (it should come out clean).
Remove from the oven.
Set aside to cool fully.
Cut into 12 brownies.
Serve warm or chilled. Store in the fridge for 3-4 days or months in the freezer.