Beef stir-fry is a quick and easy dinner option that is packed with flavor. Thinly sliced beef is marinated in a mixture of soy sauce, garlic, ginger, and other seasonings. It is then stir-fried with an assortment of colorful vegetables like bell peppers, broccoli, and carrots. The result is a delicious and healthy meal that can be served over rice or noodles.