Whip up a quick and delicious beef stir-fry for a satisfying weeknight dinner. This recipe features tender strips of beef cooked with an assortment of colorful vegetables in a savory sauce. The key to a successful stir-fry lies in the high heat and quick cooking time, which ensures that the ingredients retain their crispness and flavors. Serve it over steamed rice or noodles for a complete and flavorful meal.