Step 1.  In a  large bowl, mix together warm water, sugar, and yeast.  Cover the bowl with a towel and allow to rest for 7 minutes until frothy with small bubbles.  If it isn't frothy like the head on a draft beer, then your yeast is dead and you need to start over with fresh yeast.

Step 2.  Use a stand mixer with a paddle attachment or a wooden spoon to mix Carquik into the yeast mixture.  Mix it until it is a kneadable dough.  If it's too wet to knead, then add a little more Carbquik and if it's too dry to knead, then add a little water.

Step 3.  Either use the dough hooks on the stand mixer or your hands to knead the dough for 3 minutes.

Step 4.  Make the dough into a ball and use a large knife to cut it into 8 equal pieces.  Cover a cookie sheet with parchment paper.  Roll each piece of dough into a ball with your hands and place them on the parchment-covered cookie sheet.

Step 5.  Allow the dough balls to rise for 15 minutes.  They will not rise a lot, but you'll be able to tell that they are a bit bigger.

Step 6.  While they are rising, set your air fryer to 350 degrees F and preheat it for 10 minutes.

Step 7.  Brush four of the dough balls with melted butter on all surfaces and place them in the basket of the air fryer.  Air fry at 350 degrees F for 10 minutes.

Step 8.  Remove the donut holes from the air fryer and set them aside to cool a little bit.  Repeat the process with the remaining dough balls.

Step 9.  Once the donut holes are cool enough to touch, brush them again with melted butter on all surfaces.

Step 10.  Mix together cinnamon and sweetener in a medium-sized bowl.  Roll the donuts in the cinnamon mixture until coated on all sides.

Step 11.  Best when eaten warm.  Can be reheated in the microwave for 10 seconds to soften them back up.