Prepare the apples
Peel the apples, remove the core, and cut them into small diced pieces. Set aside.

Prepare the batter base
In a large bowl, combine the eggs and sugar. Mix with a hand whisk, just enough to combine without whipping.
Add the milk and mix briefly.

Incorporate dry ingredients
Pour all the flour into the bowl and mix until you get a smooth, lump-free batter.
Add the instant yeast and mix again.

Add the apples
Incorporate the diced apples into the batter and mix gently to distribute them evenly.

Cooking the waffles
Heat the electric waffle maker well on the highest setting.
Lightly grease the surface with a little oil.
Pour a ladleful of batter into each mould, without overfilling: the batter rises a lot during cooking.

Close the waffle maker and do not open it during cooking.
Cook for 5–6 minutes, until the waffles are golden and well puffed up.

Serve
Remove the waffles from the waffle maker and repeat the process until you have used up all the batter.
These quantities make approximately 6 waffles.