Trim stems from mushrooms and discard. Slice mushrooms; set aside.
Heat broth in a large nonstick wok or skillet. Add beans, bok choy, carrots, ginger, and garlic to wok; cook and stir for 3 to 4 minutes or until crisp-tender. Add green onions and sprouts to wok; cook and stir for 2 minutes. Add mushrooms to wok; cook and stir for 1 minute more. Add rice, soy sauce, and water to wok; cook for 2 minutes more or until heated through. If desired, garnish with green onion fans or curls. Makes 4 side-dish servings.