Longhorn Steakhouse celebrates local mushrooms By Cathy Branciaroli, Food Correspondent, The Times Longhorn Steakhouse’s Chef’s Showcase dish, Harvest Mushroom Filet, features local mushrooms from Basciani Foods. September is National Mushroom Month, and with Kennett Square’s Mushroom Festival behind us, the celebration of mushrooms continues at Longhorn Steakhouse.  The chain of casual...