Decadent fried Oreos coated in a sweet, crispy batter are an irresistible state fair indulgence. This over-the-top family treat is a fun, memorable dessert experience.
In a medium mixing bowl, whisk together the flour, sugar, baking powder, and salt to evenly distribute the dry ingredients.
In a separate bowl, beat the egg and milk together until combined, then pour the wet mixture into the dry ingredients, stirring until a smooth, lump-free batter forms.
Pour the vegetable oil into a deep pot and heat over medium-high heat until the temperature reaches 350°F (175°C); check oil temperature with a thermometer for accuracy.
Dip each Oreo cookie fully into the batter, ensuring a thick coating, then carefully lower into the hot oil using tongs. Fry just 3–4 Oreos at a time to avoid temperature drops.
Fry the Oreos for about 1–2 minutes per side, turning once, until golden brown and crisp all over. Use a slotted spoon to remove fried Oreos and drain on paper towels.
Let the fried Oreos cool for 2–3 minutes, then dust generously with powdered sugar and serve warm for the best texture.