1.Thaw the spinach. Remove as much liquid as possible.
2. Preheat oven to 180°C (356°F). Brush the bottom and the sides of a baking dish with olive oil.
3. In a big mixing bowl, scramble the tofu, using your hands or with a fork. Add thawed and drained spinach, yogurt, salt, and dried oregano. Stir until combined.
4. Roll out the phyllo dough and cover it with a damp towel or plastic wrap to keep it from drying out.
5. Place one sheet of phyllo dough in the bottom of the baking dish and brush with olive oil. Add a second layer on the top and brush with oil. Repeat the layering process 3 more times.
6. Spread the spinach-tofu mixture out on the top of the dough and then repeat the layering process with the remaining sheets, brushing the sheets with oil.
7. Bake for 45 minutes until golden brown. Serve immediately.