Warm milk to 105º F and add the yeast and 2 tablespoons of the sugar. Allow sitting for 5 minutes until frothy.
In a large bowl, add the dry ingredients including the remaining sugar (not the powdered sugar) and whisk to blend.
Add the warm milk mixture, butter, and eggs. Mix well.
Preheat the oven to 200º F. Turn off the oven.
Cover the bowl of dough and cover with plastic wrap. Place in the preheated warm oven and keep the door cracked open. Let the dough rise for 60 minutes.
Place a piece of wax paper down on the counter. Dust with gluten free flour blend.
Add the dough and sprinkle a little flour over it. Press down a little then top with another piece of wax paper.
Use a rolling pin to roll the dough to one-inch thickness.
Cut out circle shapes with biscuit cutters. Place on a plate
Allow the dough to sit 10 minutes. While they are sitting, heat light oil in a cast-iron skillet or fryer. You want the oil to be around 375º F.
When the oil is hot, add some of the dough circles.
Cook about 4-5 minutes on each side. Let the donuts get golden brown on each side.
Remove and place on a paper towel covered plate to absorb extra oil.
Optional: roll in powdered sugar to coat each donut.
Fill a squirt bottle with jelly or jam. Squeeze jam into each donut.