Unwrap the Uncrustables and punch a hole through the center of each one, reserving the donut holes.
Heat the oil to 375°F.
Coat each Uncrustable and donut hole completely in the prepared pancake mix.
Carefully add the Uncrustables to the hot oil and fry for about 1 minute per side, or until golden brown. Fry the donut holes the same way.
Remove from the oil and transfer to a cooling rack.
Dust generously with powdered sugar. Serve warm and enjoy.