Preheat oven to 325F.
Combine flour, baking powder, sugars, salt, and nutmeg in a small bowl.
In a medium bowl, beat together yogurt, creamer, egg, vanilla, and butter together until thoroughly combined/
Stir in flour mixture just until incorporated.
Spray a donut pan with cooking spray.
Spoon batter into a ziploc bag. Cut off one corner and pipe the batter into the pan.
Place in the oven and bake for 10-12 minutes or until tops of donuts spring back at your touch. They will not brown on top.
Remove from the oven and let rest for several minutes before removing from pan.