Heat oil in a deep fryer or pan to 350°F (175°C).
In a bowl, combine pancake mix, milk, egg, and vanilla extract until smooth.
Dip each Oreo into the batter, ensuring full coating.
Carefully place battered Oreos into the hot oil.
Fry for 2-3 minutes until golden brown.
Remove Oreos with a slotted spoon and drain on paper towels.
Dust with powdered sugar before serving.
Optional: drizzle with chocolate sauce for added sweetness.