Cook quinoa. In a medium pot, add 1/2 c. of quinoa and 1 c. of water and bring to a boil. When the pot begins to boil, decrease the heat to a simmer. Stir every 5 minutes until all of the water has evaporated and the quinoa is fluffy.
Preheat the oven to 350º and grease a mini donut pan with coconut butter or nonstick spray.
In a large bowl, combine flours, corn starch, baking powder, salt, coconut palm sugar, and cinnamon. Use a fork to whisk everything together.
In a small bowl, combine milk and lemon juice and set aside for 5 minutes.
Add milk/lemon juice mixture, coconut butter, eggs, quinoa, and vanilla to a food processor and blend until well-combined.
Add wet mixture to the bowl of dry ingredients and mix thoroughly.
To fill the donut forms, fill a Ziplock bag with the batter and snip the corner of the bag. Then squeeze it into the forms, filling 2/3 of the way full.
Bake the donuts for 8-10 minutes.
If desired, lightly coat donuts with coconut butter and dip them into the coconut sugar for added crunch and sweetness.