*I found the Cotton Candy Sugar Cookie Mix at Target (I believe that's the only store it's sold in), but if you're having a hard time finding it, Betty Crocker's original Sugar Cookie Mix can easily be substituted.
*Greek yogurt, plain yogurt, or sour cream can be substituted for the Cotton Candy Greek Yogurt.
*The glaze thickens up/sets pretty quickly, so you may have to reheat the glaze halfway through dipping the donuts. Or, add new hot water to the waterbath bowl.
*These donuts freeze really well! Just place them in an airtight container or heavy-duty freezer bag (wax paper between layers of donuts, if stacking layers), and freeze them for up to 3 months. When you're ready to serve the donuts, remove them from the freezer and place them on a plate in a single layer at room temperature. Make sure they're not on top of one another! As the donuts begin to defrost, the glaze will be wet, but after about 15 minutes, it sets up nice and dry again!
*Don't have a donut pan? Use a muffin pan and bake for 15-17 minutes!