Online ordering menu for La Piñata Mexican Bar & Grill. At La Piñata Mexican bar & grill in Knoxville we serve Mexican Food such as Chile verde, Carne Asada, Shrimp Tostada, Street tacos, Fajitas, Soups and Salads. We are located in the corner of N Broadway and McCroskey Ave, a few minutes from Walgreens. Order online for carryout and Delivery Today!