Make the batter: Whisk egg yolks, milk, vanilla, and sifted flour until smooth. Set aside.
Whip the egg whites: Beat egg whites until foamy, then gradually add sugar and beat until stiff, glossy peaks form.
Fold the meringue: Gently fold a third of the whipped egg whites into the yolk mixture, then carefully fold in the rest without deflating the batter.
Cook the pancakes: Heat a greased non-stick pan over low heat. Spoon thick mounds of batter onto the pan, cover, and cook for 4–5 minutes until golden.
Flip and finish cooking: Carefully flip, cover, and cook for another 4–5 minutes until set and bouncy.
Serve immediately: Transfer to a plate and top with syrup, whipped cream, or fresh fruit.