You could wrap the tofu and mushrooms in the spinach leaves (with your choice of seasonings) and steam them. Or bake them, esp if you can make some sort of sauce to bake them with.
Or make teriyaki tofu and serve on a bed of rice mixed with the mushrooms and spinach.
Or put the spinach and mushrooms thru a pasta with your choice of sauce or just oil and garlic. Not sure whether the tofu would go well with pasta or not.
Pizza?