Cube steak with chimichurri sauce is a flavorful and healthy dish that is perfect for a summer barbecue. Season the steak with salt, pepper, and garlic powder. Grill the steak until it is cooked to your desired level of doneness. Serve the steak with a homemade chimichurri sauce made with fresh herbs, garlic, and olive oil. This dish pairs well with grilled vegetables and a crisp salad.