Preheat your waffle maker according to the manufacturer's instructions.

In a large mixing bowl, whisk together the flour, sugar, baking powder, and salt.

In another bowl, beat the eggs and then add the milk, vegetable oil, and vanilla extract.

Pour the wet ingredients into the dry ingredients. Stir gently until just combined.

Lightly grease the waffle maker with cooking spray or brush with oil.

Pour about 1 cup of batter into the preheated waffle maker. Close the lid and cook until the waffles are golden brown and crisp.

Carefully remove the waffles and serve them hot.

Repeat with the remaining batter, greasing the waffle maker as necessary.