Mix the mixture, the egg, the vegetable oil and the water. Stir with a spoon until it is smooth and creamy

Pour the mixture evenly to the muffin baking tray, till the ¾ of them. Bake in preheated oven at 190°C for 17 minutes

Tip: For muffin with chocolate chunks: add 50 gr. or 100 gr. of chocolate chunks