01 - In a large bowl, whisk together flour, granulated sugar, baking powder, and salt until evenly combined.
02 - In a separate bowl, beat eggs thoroughly, then add milk, melted butter, and vanilla extract. Mix until well incorporated.
03 - Pour wet ingredients into dry ingredients and stir until a soft, slightly sticky dough forms.
04 - Lightly flour a work surface, turn out the dough, and knead gently for 1 to 2 minutes until smooth and cohesive.
05 - Roll dough to approximately 1/4-inch thickness and cut into 2-inch squares or diamond shapes using a knife or pastry cutter.
06 - Heat vegetable oil in a deep pot to 350°F (175°C), monitoring temperature carefully with a thermometer.
07 - Fry dough squares in batches, turning once, until puffed and golden brown, approximately 1 to 2 minutes per side. Avoid overcrowding the pot.
08 - Remove fried pieces with a slotted spoon and drain on paper towels to remove excess oil.
09 - While still warm, generously dust with powdered sugar and serve immediately for optimal texture and flavor.