Honey Cashew Chicken

Name: Honey Cashew Chicken
Prep time: 30 min
Cook time: 20 min
Total time: 50 min
Cuisine: Chinese, Asian, American
Ingredients: 2 tablespoons cornstarch; ½ teaspoon fresh ground black pepper; 2 tablespoons low-sodium soy sauce; 2 tablespoons sesame oil; 1 teaspoon rice vinegar; 3 skinless boneless chicken breasts (cut into 1-inch pieces); 1 tablespoon cornstarch; 1 ½ tablespoons rice vinegar; ¼ cup honey; 3 tablespoons low sodium soy sauce; 1 ½ tablespoons Sriracha sauce (more or less to taste); ½ cup water (or chicken broth); 2 tablespoons vegetable oil (divided); 2 cups broccoli florets; 1 large sweet onion (chopped); 1 red bell pepper (seeds and ribs removed, chopped or sliced); 3 medium cloves garlic (minced); ¼ teaspoon crushed red pepper flakes; 1 cup unsalted cashew nuts (toasted (see notes)); hot cooked rice (for serving); ¼ cup sliced green onions (for garnish); 1 tablespoon toasted sesame seeds (for garnish)