In a small bowl, mix the first six ingredients and 1/4 cup chicken broth until smooth. Cook rice according to package directions., Meanwhile, in a large skillet, heat oil over medium-high heat. Add broccoli; stir-fry 2 minutes. Add remaining broth; cook 1-2 minutes or until broccoli is crisp-tender. Stir sauce mixture and add to pan. Bring to a boil; cook and stir 1-2 minutes or until sauce is thickened., Stir in chicken and green onions; heat through. Serve with rice.