Teriyaki Chicken Casserole

Ingredients: 

• 3/4 cup low-sodium soy sauce 
• 1/2 cup water 
• 1/4 cup brown sugar 
• 1/2 teaspoon ground ginger 
• 1/2 teaspoon minced garlic 
• 2 Tablespoons cornstarch + 2 Tablespoons water 
• 2 small boneless skinless chicken breasts 
• 1 (12 oz.) bag stir-fry vegetables (Can be found in the produce section) 
• 3 cups cooked brown or white rice