DINNER EMERGENCY!!! Please Help Me fast!!!! SOS?

Ok me and my husband are staying at my Father in laws house, and he bought this beef cut called sirloin tip. They are at work right now and want me to cook this thing tonight! I need a means of cooking it! i Still have plenty of time but have very limited supplies! I am at his house and he tends not to cook so ya very limited. I need something simple yet pretty yummy you know? Please oh Please help I don't know what to make with this!