Preheat the oven to 350℉.
In a large mixing bowl, add the cassava flour, tigernut flour, arrowroot flour, baking soda, cream of tartar, and gelatin, mixing to combine.
In a separate bowl, add the applesauce, coconut oil, bananas, maple syrup, coconut cream, mixing to combine. You can also add to a blender and blend until smooth.
Add the wet ingredients to the dry ingredients, mixing until well-combined.
Fold in the blueberries.
Grease a donut pan and, using a spoon, equally distribute the batter. You’ll have to use your hand to help mold the donuts, since this batter will be a bit thicker than typical donut batter.
Bake for 30 minutes, allow to cool, then top with optional toppings.