Sirloin steak is a popular, flavorful, and lean cut from the back of the cow, known for its beefy taste and good value, making it ideal for grilling, broiling, or pan-searing. The most common and highest quality type is the top sirloin, which is tender and juicy when cooked to rare or medium-rare, but can become tough if overcooked. It's a versatile steak that works well with marinades and seasonings, and is a great choice for a weeknight meal.