Add the flour, baking powder, salt, cinnamon, sugar, and vanilla extract, and whisk until you have a smooth, slightly stiff mixture.
Once your oil has come up to the proper temperature, add the dough to the hot oil about a tablespoon at a time. I use a cookie scoop but only fill it about halfway. I can usually cook four or five little dough balls at a time.
Flip each dough ball a few times as they're cooking until they're deep brown on the outside. Once cooked, remove to a wire rack over a baking sheet to cool and crisp up.
Serve warm dusted with a generous amount of powdered sugar.