1. In a medium-sized bowl, whisk together flour, sugar, baking powder, and salt until well combined.

2. In a separate bowl, whisk together milk, eggs, and vanilla extract until well combined.

3. While whisking, gradually add the dry ingredients to the wet, stirring until the mixture is smooth and combined. Set aside.

4. Fill a medium-sized saucepan 2-3 inches deep with vegetable oil. Set on the stovetop over medium-low heat. Heat the oil to 370°F - 375°F (187°C - 190°C).

5. Once the oil is heated, portion about ½ - ⅓ cup of batter into a liquid measuring cup. Slowly drizzle the batter into the oil in a thin stream, swirling and crisscrossing the batter over itself. Cook on each side until golden brown (about 90 seconds per side), then remove to a paper towel-lined plate.

6. Dust with powdered sugar and serve warm.

7. Repeat with the remaining batter, but make sure that the oil returns to temperature between batches.