Penne with Beef and Arugula

Img_0519Here's one for the "keepers" list:  Penne with Beef and Arugula.  It's super simple, tastes great, and I think it would even be good cold.  We left out the extra basil and parsley--just 'cause we didn't have any on hand--and it was just fine.  The steak--with the yummy herby-garlicy rub--would be great on its own too.