Heat a deep-frying pan or skillet over medium heat, pour 2 inches of oil in the pan and heat it to 265 °F (129 °C)
Mix the pancake mix, milk, egg and butter together in a large bowl to combine.
Dip 3-4 Oreos in the batter, drip off the excess batter and fry for 2-3 minutes, flipping them half way through or until light and golden on all sides.
Drain the Oreos on a plate fitted with a paper towel.
Repeat the frying process with the remaining Oreos then serve with Nutella or powdered sugar for dusting as desired.