Mix the cinnamon and sugar together in a large ziploc bag and shake to mix.

Heat oil until little bubbles start forming and it's just about to boil. Pull apart each biscuit in half and roll into 2 round dough circles, poking a hole into each.

Deep fry the donut biscuits until both sides are golden brown, and repeat with the remaining dough.

Remove each donut, leting the excess oil drip off, and then add to the bag and shake until the donut is coated.