Preheat waffle iron.
In a bowl, sift together flour, sugar, baking powder, baking soda, and salt.
Whisk in egg, vanilla, and oil until blended well with no lumps.
Heat a medium-large pan over medium heat. Lightly grease with oil or cooking spray.
Spoon ¼ cup of batter into waffle iron.
Wait until golden brown in colour and if needed, flip waffle to allow the other side to become golden brown in colour, ~3 minutes on each side.
Serve with desired toppings.