Start by heating the vegetable oil in a deep fryer or a heavy-bottomed pot to 350°F (175°C). Use enough oil to submerge the Snickers bars completely.

While the oil is heating, prepare the batter. In a mixing bowl, combine the all-purpose flour, baking powder, salt, and sugar. Whisk together to ensure even distribution.

In a separate bowl, whisk together the milk, egg, and vanilla extract until well combined. Gradually add the wet ingredients to the dry ingredients, stirring until a smooth batter forms. The batter should be thick enough to coat the back of a spoon.

Once the oil is hot, take the Snickers bars and dip each one into the batter, ensuring they are completely coated. Allow any excess batter to drip off.

Carefully lower the battered Snickers bars into the hot oil one at a time, being cautious to avoid splashes. Fry them in batches if necessary to prevent overcrowding.

Cook the Snickers bars for about 2-3 minutes or until they are golden brown and crispy on the outside. Use a slotted spoon to remove them from the oil and let them drain on paper towels.

If desired, dust the fried Snickers with powdered sugar before serving. Enjoy them warm for the best experience!