Combine all ingredients in a large bowl and blend together using an immersion blender.
Continue to mix everything for about 45–60 seconds to create a smooth, slightly thickened batter.
Heat up your donut maker and spray it with coconut oil to keep them from sticking. Pour the batter into each well, filling them about 90% of the way.
Let cook for 3 minutes on one side, then flip and cook for an additional 2 minutes. Remove from the donut maker and set aside to cool. Repeat with the rest of the batter.