Preheat a waffle iron according to manufacturer’s instructions.

Sift flour and baking powder together into a bowl.

Beat eggs and sugar in a separate bowl with an electric mixer until fluffy. Add milk, melted shortening, salt, and vanilla; mix until well blended. Mix in flour mixture.

Spoon 2/3 cup batter onto the preheated waffle iron. Close the iron and cook until waffle is golden brown and the iron stops steaming, about 5 minutes. Repeat to cook remaining waffles.