Preheat oven to 450°F. Mix together tapioca starch, salt, and seasoning of your preference. Mix together oil, milk, and eggs; then mix this into the tapioca. Knead. Roll out dough between two sheets of parchment paper. Peel off one side, reposition it, then flip and peel off the other side. Transfer to cookie sheet. Brush with melted butter and sprinkle with cheese like parmesan. Bake 10-15 min - cracker will be light-colored. Slice warm.