Preheat your waffle maker according to the manufacturer's instructions, about 5 minutes.

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

In a separate bowl, beat the eggs lightly and add in milk, vegetable oil or melted butter, and vanilla extract.

Pour the wet mixture into the dry ingredients, folding them together gently.

If necessary, lightly grease the preheated waffle maker.

Pour the recommended amount of batter onto the center of the preheated waffle maker.

Cook the waffles until golden brown, about 4 to 6 minutes.

Carefully remove them and serve immediately while warm.