Separate the eggs.

In a bowl, beat the egg yolks and sugar until light and creamy.

Add the cooled, melted margarine to the yolk mixture.

Add milk and vanilla extract to the yolk mixture.

In a separate bowl, combine flour, baking powder, and salt.

Add the dry ingredients to the wet ingredients.

Beat the batter well until smooth.

In another clean bowl, beat the egg whites until stiff peaks form.

Gently fold the beaten egg whites into the waffle batter.

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

Pour the batter onto the hot waffle iron.

Bake for 3 to 4 minutes, or until the waffles are golden brown and crispy.

Remove the waffles from the iron and serve immediately.