Bake 1 can ready-to-bake refrigerator biscuits according to package directions. Cool and split each in half. Spread each half with a little tomato paste. Sprinkle with a little orégano. Top with a thin slice of mozzarella or natural sharp American cheese; add a drop or two of salad oil. Sprinkle with Parmesan cheese. Bake in hot oven (450°) 6 to 8 minutes. Top each with a piece of anchovy. Serve whole or cut in half, but serve hot.