Teriyaki Chicken Casserole is the kind of dinner I reach for when I want something colorful and filling without making several separate dishes. Cooked chicken, rice, broccoli, carrots, and bell pepper all get coated in a homemade teriyaki sauce, then the whole thing goes into one baking dish to heat through.
What I like most about this casserole is that it does not rely on canned soup or a heavy cheese sauce. The teriyaki sauce brings the moisture and flavor, while the vegetables keep the finished dish from feeling too rich. It is also a useful way to turn leftover chicken and cooked rice into a completely different meal.
Why You’ll Love This Teriyaki Chicken Casserole
- One-dish dinner: Chicken, rice, vegetables, and sauce all end up in the same baking dish.
- Good use for leftovers: Cooked chicken and cooked rice make the prep especially quick.
- Plenty of vegetables: Broccoli, carrots, bell pepper, and green onions are already built into the casserole.
- Homemade sauce: The teriyaki sauce is sweet, savory, garlicky, and easy to thicken on the stove.
- Meal-prep friendly: Leftovers reheat well for lunch the next day.
Ingredient Notes
Cooked chicken: Diced or shredded chicken both work. Rotisserie chicken is an easy shortcut, especially on nights when I do not want to cook the protein separately.
Cooked rice: Jasmine or long-grain white rice works well here. The important part is that the rice is already cooked and not overly wet. Very soft rice can turn mushy once it is mixed with sauce and baked again.
Vegetables: Broccoli gives the casserole some bite, while carrots and red bell pepper add sweetness and color. I would keep the pieces fairly small so they warm through at the same rate as the rest of the casserole.
Teriyaki sauce: Low-sodium soy sauce is helpful because the sauce reduces slightly as it cooks. Honey or brown sugar adds sweetness, rice vinegar keeps it balanced, and sesame oil, garlic, and ginger give the sauce its deeper flavor.
How This Casserole Comes Together
The teriyaki sauce is the only part that needs a little stovetop time. Soy sauce, sweetener, vinegar, sesame oil, garlic, and ginger simmer together first. A quick cornstarch slurry thickens the sauce enough to coat the chicken and rice instead of running straight to the bottom of the baking dish.
Once the sauce is ready, the cooked rice and chicken are mixed with the vegetables and most of the sauce. The casserole bakes covered at first so the rice stays moist, then uncovered briefly at the end. The exact amounts and full step-by-step method are in the recipe card below.
Tips for the Best Teriyaki Chicken Casserole
- Do not start with soggy rice. Rice that is already very soft can break down once the sauce is added.
- Thicken the sauce before assembling. A lightly thickened sauce coats the ingredients much more evenly.
- Keep the vegetables similar in size. Smaller broccoli florets and diced bell pepper warm through more predictably.
- Cover the casserole for most of the bake. That keeps the rice from drying out.
- Add a little moisture if needed. If your rice is dry before baking, stir in a spoonful of extra sauce or a small splash of water.
Teriyaki Chicken Casserole
Ingredients
Chicken and Rice
- 2 cups cooked chicken breast diced or shredded
- 3 cups cooked white rice jasmine or long-grain works well
- 1 1/2 cups broccoli florets
- 1 red bell pepper diced
- 1 cup shredded carrots
- 3 green onions sliced
Homemade Teriyaki Sauce
- 1/2 cup low-sodium soy sauce
- 1/4 cup honey or brown sugar
- 2 tbsp rice vinegar
- 1 tbsp sesame oil
- 2 cloves garlic minced
- 1 tsp fresh ginger grated
- 1 tbsp cornstarch
- 2 tbsp water for the cornstarch slurry
Instructions
Make the Teriyaki Sauce
- Combine the soy sauce, honey or brown sugar, rice vinegar, sesame oil, garlic, and ginger in a saucepan over medium heat. Bring to a gentle simmer.
- Stir the cornstarch and water together until smooth. Slowly whisk the slurry into the simmering sauce and cook for 2 to 3 minutes, until lightly thickened. Remove from the heat.
Assemble and Bake
- Preheat the oven to 375°F and lightly grease a 9×13-inch baking dish.
- Combine the cooked rice, chicken, broccoli, bell pepper, carrots, and half of the green onions in a large bowl.
- Pour most of the teriyaki sauce over the mixture and stir until everything is evenly coated. Transfer to the prepared baking dish and drizzle the remaining sauce over the top.
- Cover with foil and bake for 20 minutes. Remove the foil and bake for another 5 to 10 minutes, until heated through and lightly golden around the edges.
- Sprinkle with the remaining green onions and sesame seeds, if using, before serving.
Notes
Easy Variations
You can use cooked chicken thighs instead of breast if that is what you have. Brown rice also works, although the texture will be a little chewier. For extra vegetables, snap peas or small pieces of zucchini are easy additions, but I would avoid overloading the baking dish or the casserole can become watery.
If you want more heat, a little crushed red pepper or sriracha can go into the sauce. I would add it gradually so the sweet-and-savory balance still comes through.
Make-Ahead, Storage, and Reheating
You can cook the chicken, rice, and teriyaki sauce ahead of time and refrigerate them separately. Assemble the casserole when you are ready to bake so the rice does not sit in the sauce for too long.
Store leftovers in a covered container in the refrigerator for up to 3 days. Reheat individual portions in the microwave, or warm a larger amount in a covered baking dish at 325°F. A spoonful of water or extra teriyaki sauce helps if the rice has dried out in the refrigerator.
Teriyaki Chicken Casserole FAQs
Can I use rotisserie chicken?
Yes. Rotisserie chicken is one of the easiest shortcuts for this casserole. Remove the skin and shred or dice the meat before mixing it with the rice and vegetables.
Can I use frozen vegetables?
You can, but thaw them first and drain away excess water. Too much moisture can thin the sauce and make the rice soft.
Why is my casserole dry?
The usual cause is dry rice or not enough sauce. Add a small splash of water or extra teriyaki sauce before covering the casserole and reheating or baking it.
More Easy Chicken Casseroles
For another easy dinner, try my Chicken Noodle Casserole, Broccoli Rice Cheese and Chicken Casserole, or Company Chicken Casserole. You can also browse the full casserole collection or use my 15 easy casseroles for dinner roundup when you need more ideas.
