Brazilian Cheese Bread (Pão de Queijo)

Preheat your oven to 400°F (200°C).

In a saucepan, combine the milk, oil, and salt. Bring the mixture to a light boil over medium heat.

Place the tapioca flour in a large mixing bowl. Carefully pour the hot milk and oil mixture over the flour and stir with a wooden spoon until combined. The mixture will be sticky.

Add the egg and stir until fully incorporated.

Add the grated mozzarella and Parmesan cheese, and mix with your hands until a sticky dough forms.

Lightly oil your hands to prevent the dough from sticking. Take small portions of the dough and roll them into compact balls, about 1-2 inches in diameter.

Place the dough balls on a baking sheet lined with parchment paper.

Bake for 15-20 minutes, or until lightly golden and puffed.

Optionally, brush the warm cheese breads with a little melted butter immediately after taking them out of the oven. Serve warm.