Preheate oven to 400 degrees F In a large bowl add together the cassava flour, unsalted butter, egg and mix with your hands.
Next add the greated cheese and continue work the dough until the mixture resembles coarse crumbs. then add baking powder and continue work with your fingertips, and finally the milk. Work the dough until it is smooth.
Transfer the dough onto lightly floured surface. Shape the dough into a rectangle and cut in 16 equal pieces.
Do not try to roll it directly on the bench, you have to squeeze it well with your hands working the dough. Then start roll the dough into ropes with approximately 6 inches long. bring the two ends close but not connect the two ends together. Chipa has a U shape.
Greased with oil a baking tray, place the chipas with distance between them. Bake for 12 minutes or until golden brown.