1. Cook vegetable mix as package label directs.
2. Warm vegetable oil in a large skillet over high heat. Sprinkle steak with salt and pepper and add to skillet along with onion and bell pepper. Sauté for 2 minutes. Add garlic and ginger and sauté 2 minutes longer.
3. Stir in soy sauce, sesame oil and broth, bring to a boil and cook 2 minutes, stirring occasionally. Stir in mixed vegetables and toss well.
4. In a small bowl, mix cornstarch with 2 tsp. water until smooth. Add to skillet and cook, stirring constantly, until thickened, about 1 minute. Serve over rice, if desired.