Cook noodles according to package directions, drain and set aside.  (These noodles usually cook for only 3 to 4 minutes.)

Heat oil in a large nonstick skillet or wok over medium high heat; add carrots, peppers, zucchini and mushrooms.  Cook for 1 to 2 minutes stirring occasionally.  Add the cooked noodles to the pan and pour the simmer sauce and water over vegetable noodle mixture.  Stir to combine and bring to a boil.

Reduce heat to low, stir in onions and simmer for 3 to 5 minutes or until sauce is bubbling and slightly thickened.  Sprinkle with cilantro and cashews; serve immediately.