This was a last minute dinner and it turned out great. With a yummy heirloom tomato and fresh basil it was great. I even went without the sour cream; the moisture from the mushroom, tomato and mayo were plent.
Love portobello mushrooms!! Only thing I changed was the basil to sage. I have tons of sage growing all over the place and, somehow, I just cannot get basil to grow!! Good thing I love sage and it goes just as well in this recipe. Thanks Dancer^.