In a small bowl, combine soy sauce, Korean BBQ Blend, rice wine, orange juice, honey, toasted sesame oil. Mix well.
In a large bowl, gently coat the beef with cornstarch, then pour in 2 tbsp of the sauce. Mix well and let marinate for 15-30 minutes.
In a heavy bottom skillet or wok, heat 1 tbsp of oil until hot, and swirl to coat the bottom evenly. Add in the beef, making sure the meat is spread out in a single layer. Sear for 1 minute over high heat.
Then stir-fry the beef by stirring and scooping, and allowing all the slices to cook evenly. Stir-fry until both sides are slightly charred but still pink inside – about one minute. Transfer beef to a plate and set aside.
Wipe the skillet/wok clean with a paper towel. Then heat another 1 tbsp of oil over medium heat. When the oil is hot, add in the onion and cook for about 30 seconds. Then add in the zucchini and continue to stir-fry for another minute.
Finally, add in the carrots and stir-fry for one more minute. When the vegetables are crisp-tender, turn heat to high, and add the beef back into the wok, along with the sauce.
Toss everything together and stir quickly until meat is cooked through and the sauce thickens – about 1 minute. Turn heat off and dish out immediately. Serve hot with steamed rice.