To prepare the Kinder chocolate muffins in the air fryer, in a bowl, beat the eggs with the sugar using a hand whisk or electric mixer until you get a light and fluffy mixture. Add the oil and vanilla yogurt and continue mixing to combine everything.

Sift the flour with the baking powder, add the packet of vanillin, and gradually incorporate everything into the mixture while continuing to mix.

Add the chopped Kinder chocolate to the muffin batter and gently combine everything.

Take the aluminum molds, butter and flour them, then fill them with 3/4 of the batter. Alternatively, you can line the aluminum molds with paper liners.

If you prefer, you can add some Kinder chocolate pieces on top. Place the molds in the air fryer basket (in my case, I used an air fryer with a 6-liter capacity) and cook at 329°F for 12 minutes. Then, lower the temperature to 311°F and cook for another 3-4 minutes.

To ensure they’re cooked, do the toothpick test: insert it into the center of the muffin and, when pulling it out, it should come out dry. If necessary, extend the cooking time by another 2-3 minutes at 311°F.

Once cooked, let the muffins cool on a wire rack. When they have cooled, you can enjoy them. If desired, you can dust them with powdered sugar.