This Easy Teriyaki Chicken Casserole brings the best flavors of Asian takeout to your family dinner table in one simple dish. Tender chicken thighs, fluffy white rice, and colorful vegetables are coated in a sweet and savory homemade teriyaki sauce that's so much better than store-bought. It's a complete meal that bakes in one pan, making cleanup a breeze while delivering restaurant-quality taste everyone will love.
Preheat oven to 375°F (190°C) and grease a 9x13 inch baking dish. Cut chicken into 1-inch cubes, dice bell pepper, chop broccoli, mince garlic, and grate ginger.
Cook 3 cups of white rice according to package directions. Fluff with a fork and set aside.
In a medium saucepan over medium heat, combine teriyaki sauce, soy sauce, honey, garlic, ginger, and sesame oil. Bring to a simmer, then whisk in cornstarch mixed with 2 tablespoons cold water. Cook for 2-3 minutes until thickened.
Spread cooked rice in the prepared baking dish. Layer chicken pieces, broccoli, and bell peppers over rice. Pour two-thirds of the teriyaki sauce over everything and toss to coat evenly.
Cover tightly with aluminum foil and bake for 30-35 minutes until chicken reaches 165°F internal temperature and vegetables are tender.
Remove foil, drizzle with reserved sauce, and garnish with sesame seeds and green onions. Let rest 5 minutes before serving.
Notes
Use day-old refrigerated rice for the best texture. Freshly cooked rice can become mushy in casseroles.
Reserve one-third of the teriyaki sauce to drizzle on top before serving for extra flavor and shine.
Cut all chicken pieces uniformly to ensure even cooking throughout the casserole.
Don't overbake the vegetables. They should be tender-crisp with a slight bite remaining.
Chicken breasts can be substituted for thighs, though they may be slightly less juicy. Cut into larger pieces to prevent drying.
For a low-carb version, replace white rice with cauliflower rice.
Add 1-2 teaspoons sriracha to the teriyaki sauce for a spicy kick.
Toast sesame seeds in a dry pan for 2-3 minutes before garnishing for enhanced nutty flavor.
Store leftovers in an airtight container in the refrigerator for up to 4 days. Reheat in microwave or covered in oven at 350°F.
This casserole can be assembled up to 24 hours ahead and refrigerated. Add 5-10 minutes to baking time if starting cold.