This recipe for flank steak with chimichurri sauce is a delicious and easy way to prepare this cut of meat. Using a food processor to make the chimichurri sauce is a great way to ensure that all the ingredients are evenly distributed throughout the steak. The chimichurri sauce is made with parsley, garlic, red wine vinegar, and olive oil, which infuse the steak with a ton of flavor. Once the steak is grilled to perfection, it's served with a side of roasted vegetables. This dish is perfect for a summer barbecue or a cozy winter dinner.