Preheat the oven to 350ºF.
Bring the chicken consomme to a simmer. Sprinkle the tapioca flour into the consomme and simmer for 20 minutes. Strain.
Lay the bread slice out onto a baking sheet. Brush the bread with olive oil and top with the parmesan cheese. Place in the oven and bake until golden brown, about 10 minutes.
Serve the consomme with 2 of the cheese croutes on top.
Yield: 4 servings