In a small bowl, whisk 1 tbs water wit hcornstarch until smooth. Whisk in honey, soy sauce, and broth.
Warm oil in a large skillet over high heat. Add onion, garlic, ginger, and crushed red pepper; cook for 30 seconds, stirring constantly.
Add chicken and stir-fry until opaque, 5-6 minutes. Add snow peas, bell pepper and cashews, and continue stir-frying for 1-2 minutes. Stir reserved sauce and pour it in to skillet. Cook for 1-2 minutes longer, stirring constantly, until sauce is bubbling and has thickened. Drizzle with sesame oil and serve over rice if desired.