Grilling cube steak is a great way to add flavor to this lean cut of beef. To make this dish, you will need to season the cube steak with salt, pepper, and garlic powder. Grill the steak over high heat for 3-4 minutes per side, or until it is cooked to your desired level of doneness. While the steak is cooking, make the chimichurri sauce by blending together parsley, cilantro, garlic, red wine vinegar, olive oil, and red pepper flakes. Serve the grilled cube steak with the chimichurri sauce drizzled over the top for a fresh and flavorful meal.