In a medium sized bowl, whisk together to combine sauce ingredients. Add shrimp, broccoli, snow peas and carrots and let them fully soak and marinade in sauce for about 15-20 minutes.
In a cup or a small bowl, mix your cornstarch slurry and set aside.
In a wok or stir-fry pan, heat your EVOO, toss in the sliced onion and when onion begins to sizzle add the shrimp, broccoli, snow peas and carrots, along with all the liquid from the sauce. Once bubbly and almost to boil, mix the cornstarch slurry to the pan. Sauce will start to thicken. Remove from heat and ensure shrimp does not over cook.
Serve over brown rice or even on greens for a salad.