How to Make It
Preheat oven to 400°F. Process tapioca starch, masarepa, cheeses, sugar, and salt in a food processor until well combined, about 15 seconds. With food processor running, add eggs and water; process until dough forms a ball, about 10 seconds. Cover dough, and let stand 5 minutes.
Shape dough into 12 (1 1/2-ounce) balls (about 1 3/4 inches wide), and place on a parchment paper-lined baking sheet, leaving 2 inches between balls. Bake in preheated oven until golden brown and puffed, about 20 minutes. Serve immediately.