Cook the grain: Prepare rice or quinoa according to package directions. Fluff and set aside.
Prep the vegetables: Chop broccoli into small florets, slice the bell pepper, and shred the carrots if needed.
Thinly slice the green onions.
Make the sauce base: In a bowl, whisk soy sauce, honey, rice vinegar, toasted sesame oil, grated ginger, garlic, sriracha (if using), and water.
Make a cornstarch slurry: In a separate small cup, mix 1.5 tablespoons cornstarch with 2 tablespoons cold water. Set aside.
Season the chicken: Pat chicken dry. Toss with 1 tablespoon cornstarch, plus a pinch of salt and pepper.
This helps the chicken sear and the sauce cling.
Sear the chicken: Heat 1 tablespoon neutral oil in a large skillet over medium-high heat. Add chicken in a single layer. Cook 6–8 minutes, stirring a few times, until browned and cooked through.
Steam-sauté the veggies: Push chicken to one side of the pan (or remove it briefly).
Add broccoli and bell pepper with a splash of water. Cover for 2–3 minutes to steam, then uncover and sauté 2 more minutes until crisp-tender.
Add the sauce: Return chicken to the center (if you removed it). Pour in the sauce base.
Bring to a gentle simmer.
Thicken: Stir in the cornstarch slurry while simmering. Cook 1–2 minutes until glossy and thick enough to coat the chicken and veggies.
Taste and adjust: Add a squeeze of lime, more soy for salt, or extra honey for sweetness. Stir in half the green onions.
Assemble: Divide cooked rice among 4–5 meal prep containers.
Top with chicken and vegetables. Add shredded carrots for crunch.
Finish: Sprinkle with sesame seeds and the remaining green onions. Let cool 10–15 minutes before sealing.