01 - In a large bowl, whisk together flour, sugar, baking powder, and salt until evenly blended.
02 - In a separate bowl, beat eggs, milk, melted butter, and vanilla extract until fully combined.
03 - Gradually pour the wet ingredients into the dry mixture, stirring continuously until a soft, cohesive dough forms.
04 - Turn dough onto a lightly floured surface and knead gently for 1 minute. Roll to 1/4 inch thickness and cut into 2x3-inch rectangles.
05 - Pour vegetable oil into a deep pot and heat to 350°F.
06 - Fry dough pieces in batches for 1 to 2 minutes per side until golden brown and puffed. Remove with a slotted spoon and drain on paper towels.
07 - While the fried dough is still warm, toss in the cinnamon-sugar mixture until evenly coated on all sides.
08 - Serve immediately while warm for optimal texture and flavor.