Preheat oven to 400°F. In a saucepan, bring milk, butter and salt to a boil, stirring constantly. Take off heat and slowly add tapioca flour, stirring constantly until thoroughly mixes. Add eggs and cheese and mix until smooth. Drop by spoonfuls in mini muffin cups or on a baking sheet. Bake till pale golden, about 20 minutes.
Note: Tapioca flour, also called manioc starch or tapioca starch, can be found in specialty supermarkets.