Mix the sauce: In a small bowl, whisk soy sauce, water, honey, rice vinegar, sesame oil, cornstarch, and red pepper flakes until smooth. Set aside. The cornstarch will help the sauce thicken and glaze the turkey.
Prep the veggies: Dice the onion, mince the garlic, grate the ginger, and slice the carrot.
Cut broccoli into small florets so they cook quickly and evenly.
Sauté aromatics: Heat the oil in a large skillet over medium-high heat. Add onion and cook 2–3 minutes until softened. Stir in garlic and ginger for 30 seconds until fragrant.
Brown the turkey: Add the ground turkey.
Season lightly with salt and pepper. Cook, breaking it up with a spatula, for 4–6 minutes until no longer pink and slightly browned in spots.
Add veggies: Toss in the broccoli and carrot. Cook 3–4 minutes, stirring often, until the broccoli is crisp-tender.
If the pan looks dry, add a splash of water to create steam.
Pour in the sauce: Give the sauce a quick stir and add it to the pan. Stir well and let it simmer 1–2 minutes until glossy and thickened, coating the turkey and veggies.
Finish and taste: Stir in the green onions. Taste and adjust—add a touch more honey for sweetness, soy for salt, or a squeeze of lime for brightness.
Build the bowls: Spoon rice into bowls, top with the teriyaki turkey and veggies, and finish with sesame seeds and extra green onions.
Serve hot.