Cook the rice. Start your rice according to package directions.
White rice takes about 15 minutes; brown rice will take longer. Keep it warm and fluffy.
Whisk the sauce. In a small bowl, combine soy sauce, water, honey, rice vinegar, sesame oil, and sriracha if using. In a separate cup, mix cornstarch with cold water until smooth.
Set both aside.
Sauté aromatics. Heat oil in a large skillet over medium-high. Add diced onion and cook 2–3 minutes until softened. Stir in garlic and ginger for 30 seconds until fragrant.
Brown the turkey. Add ground turkey, breaking it up with a spatula.
Cook 5–7 minutes until no longer pink and lightly browned. Season lightly with a pinch of salt and pepper.
Add vegetables. Stir in carrots and broccoli. Cook 3–4 minutes until crisp-tender. If using quick-cook veggies like snap peas or bell pepper, add them during the last 2 minutes.
Pour in the teriyaki. Add the soy mixture to the pan.
Bring to a gentle simmer, then stir in the cornstarch slurry. Cook 1–2 minutes until the sauce thickens and glazes the turkey and vegetables.
Taste and adjust. Add more honey for sweetness, vinegar for brightness, or sriracha for heat. Stir in sliced green onions.
Assemble the bowls. Spoon rice into bowls, top with the teriyaki turkey mix, and finish with sesame seeds and extra green onions. Add a drizzle of sesame oil or a squeeze of lime if you like.