This is a my take on a special dish that our favorite Mexican restaurant in our town - 3 Margaritas - makes for my husband and me. It is not on the menu, but since we love fish they made this for us once and now we get it often, as do our friends. We expect this to be on the menu someday soon. It is tender Tilapia sautéed with garlic butter, topped with mushrooms and smothered in a special Poblano Cream sauce and it is YUMMY! You could replace the tilapia with anything - another kind of fish, chicken, whatever... and it would still be great! Serve with rice and beans on the side and fresh flour tortillas for dipping!