Preheat oven to 400°F (200°C).
In a medium bowl, mix together the tapioca flour and parmesan cheese.
In a separate bowl, whisk together the milk, melted butter, egg, and salt.
Pour the wet ingredients into the dry ingredients and mix until a smooth dough forms.
Scoop the dough by the tablespoonful and place on a baking sheet lined with parchment paper.
Bake for 15-20 minutes, until golden brown.
Serve warm.
