Heat oil in a large dutch oven to 375 degrees F. I use a meat thermometer to gauge temperature. Alternatively, add a small piece of food to hot oil and if it immediately sizzles and rises to the surface of the oil, it should be ready.
In a medium bowl, combine flour, sugar, baking powder, cinnamon, and salt. Whisk to combine.
Pour melted butter over dry ingredients.
Mix until crumbly. Stir in milk and egg until a thick batter of dough forms.
Take 1 1/2 -2 tablespoons of dough and form into a small ball. Repeat until dough is gone.
Carefully drop in 5-6 donut holes into hold oil.
Fry, turning once, for three minutes or until golden.
Place the fried holes on a cookie sheet set above a plate and allow the oil to drain off.
Toss 1 cup sugar in a paper lunch bag. Close bag and shake donut holes in batches of 6 until coated.
We love to eat these warm or to rewarm them in a skillet on low.
Store in air-tight container until ready to eat.