Paõ de queijo by Nutella®
Preheat oven to 175 °C on top and bottom heat.
Boil the water and oil together. Whisk the mixture while gradually pouring it into the tapioca sour starch.
Add the eggs one by one and gradually pour in the milk. Mix with salt and grated cheese.
Cover your hands with oil and form the mixture into little balls (approx. 4 cm across). Place the balls on a strip of baking paper.
Bake the balls for a total of 30 minutes until golden brown, reducing the heat when they get bigger.
Cut the balls in half and spread Nutella® on each half (½ tbsp. per paõ de queijo).