Add the oil to a hot skillet over medium-high heat, then add the onion, garlic, and ginger and saute for 3-4 minutes, until slightly browned and fragrant.
Add all the vegetables (except the baby corn) to the pan and toss to combine.
Cover and let the vegetables steam for about 7 minutes.
Whisk together the orange juice, soy sauce, and honey in a bowl.
Add the orange juice, soy sauce, and honey, plus the baby corn, to the pan and toss to coat. Bring to a boil and cook for 3 minutes.
Add the cornstarch and water mixture, stir, and simmer for 1 minute.
Serve over your starch of preference (rice, noodles, etc.) if you wish, garnish with sesame seeds, and enjoy!