Cut chicken breasts into 1 inch pieces, set aside.
In medium saucepan whisk together water, sesame oil, brown sugar, soy sauce, honey, garlic and ginger. Bring to a simmer.
Whisk together slurry ingredients in a small bowl. Add to saucepan; whisk to combine.
Whisk slowly but continuously while continuing to simmer the sauce. After a few minutes of simmering, sauce will start to thicken. Remove from heat when it reaches your desired thickness - remember it will thicken more as it cools slightly.
Bring a large cast iron skillet to medium-high heat. Add olive and swirl to coat the pan. Add chicken and season lightly with a little salt and pepper. Move chicken around pan until it reaches 155 degrees F. Add teriyaki sauce (feel free to add a little at a time - you may have a little leftover). Stir to combine. Let simmer gently until chicken has fully cooked. Add broccoli and toss to combine.
Serve with sesame seeds sprinkled on top over a bed of rice of your choice - we love jasmine rice!
Notes
Teriyaki: of course if you want to make this even easier you can skip making your own teriyaki sauce and simply use store-bought from the grocery store. Whatever works best for you!
Storage: store leftovers in an airtight container in the refrigerator for up to 3 days.