Heat a large nonstick skillet or wok with a lid over high heat; heat the oil. Stir fry the carrots 1 minute; add the gingerroot and garlic; stir fry 30 seconds. Add the broccoli and broth; steam, covered, 2 minutes, then stir.

Add the tofu and cook, stirring, 1 minute. Add the mushrooms, bell peppers and onion; stir fry 3 minutes. Add snow peas, soy sauce, sesame oil and pepper flakes; stir fry 1 minute.