When you want to save time and still deliver a home-run meal (or two!), make this Big Batch Flank Steak with Creamy Chimichurri Sauce your go-to grill recipe. The flavorful herb marinade for this chimichurri flank steak doubles as a creamy chimichurri sauce with the addition of a secret ingredient: savory cream of mushroom soup. The olive oil-based marinade helps tenderize lean flank steaks, so they come off the grill juicy and ready to eat with creamy chimichurri sauce, and remain just as delicious the next day, when you can serve them as Chimichurri Steak Wraps. Luckily, chimichurri flank steak makes enough for plenty of leftovers, and comes together in under 25 minutes of active cooking time. And because you can re-use both the chimichurri sauce and the meat so many ways, it’s a great recipe for meal prep.