1. In skillet or wok, heat oils over medium-high heat. Sauté chicken until cooked through; remove to bowl.

2. In drippings, sauté pepper flakes, garlic, ginger and green onions for 2 minutes. Add broth and soy sauce and bring to a boil.

3. Add broccoli and stir fry until crisp-tender. Remove broccoli.

4. In a cup, blend sugar, cornstarch and vinegar and add to pan. Boil 1 minute. Return chicken and broccoli and heat through.