Portobello mushrooms have great consistency and texture and can please even the most hard-core carnivores.  Simply baked Portobellos are already delicious all on their own.  Add tofu ricotta on top and it gets more interesting as you create a sophisticated hearty meal to serve on any occasion.   I am thinking as a lovely dinner entrée or as an appetizer if you cut up each mushroom into four pieces. Tofu in its raw state is qu...