In a large mixing bowl, combine all-purpose flour, sugar, baking powder, and salt.

Add milk, vegetable oil, and eggs to the dry ingredients.

Mix until well blended, ensuring no large lumps remain.

Let the batter rest for 5 minutes.

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

Pour the appropriate amount of batter onto the hot waffle iron.

Cook until golden brown and crispy.

Remove the waffle from the iron.

Serve immediately with your favorite toppings, such as fruit syrup, fresh berries, powdered sugar, or whipped cream.