Mama's Asian Chicken and Rice

INGREDIENTS

• 1/3 cup warm water
• 1/4 cup packed brown sugar
• 2 tablespoons orange juice
• 2 tablespoons soy sauce
• 2 tablespoons ketchup
• 1 tablespoon white vinegar
• 4 cloves garlic, minced
• 1/2 teaspoon crushed red pepper flakes
• 1/4 teaspoon Chinese five-spice powder
• 1 teaspoon grated orange peel
• 2 tablespoons olive oil
• 1 1/2 pounds skinless, boneless chicken breast halves, cubed
•  
• 2 cups water
• 1 cup uncooked white rice
• 2 teaspoons cornstarch
• 2 tablespoons cold water
• chopped green onions for garnish