In a large sauté pan over medium heat, saute the veggies, starting with the hardest veggies [note#1] and cook for 3-4 minutes.
Next add your medium toughness veggies [note#1] and cook for an additional 2-3 minutes.
Then add your soft veggies [note#1] and cook for an additional 2-4 minutes, until everything has softened slightly but still maintains some of it's firmness and texture.
In the meantime, mix together your sauce by combining all ingredients but the cornstarch, mix well, then make a slurry with the cornstarch and a small bit of water and set both the sauce and slurry aside.
Once the soft veggies have cooked down, add your stir fry sauce and bring everything to a boil over high heat. Add your slurry slowly, mixing constantly to thicken.
Remove from the heat and it's ready to serve over rice.
Enjoy!