In a small mixing bowl, whisk together the soy sauce, water, rice vinegar, honey, sesame oil, grated ginger, minced garlic, and cornstarch to create the teriyaki base.
Season the salmon fillets lightly with salt and black pepper on both sides.
Heat a large non-stick skillet over medium-high heat and apply a light coating of cooking spray.
Place the salmon fillets in the pan and sear for 4 to 5 minutes until a golden crust forms on the bottom.
Flip the salmon fillets and immediately pour the prepared teriyaki sauce into the skillet.
Allow the sauce to simmer and reduce for 2 to 3 minutes until thickened into a glaze, spooning the sauce over the salmon as it cooks.
Steam the cauliflower rice and broccoli florets for 4 to 5 minutes until tender-crisp.
Assemble the bowls by layering the cauliflower rice and broccoli, topping with a salmon fillet, and drizzling with the remaining pan glaze.
Garnish with sliced green onions and toasted sesame seeds before serving.