Teriyaki Chicken Casserole takes the familiar chicken-and-rice dinner in a completely different direction. The rice gets coated in a glossy sauce with soy, brown sugar, fresh ginger, and garlic, while broccoli and carrots keep the whole dish from feeling too heavy.
This version starts with cooked rice rather than dry rice, and that matters. It lets us make a proper teriyaki-style sauce—thick enough to cling to the chicken instead of disappearing into the bottom of the baking dish. It also means you aren’t guessing whether the rice and chicken will finish cooking at exactly the same time.
The finished casserole should be moist but not soupy, with tender pieces of chicken, rice that still has some definition, and broccoli that hasn’t cooked itself into softness.
If you already like the sticky sweet-and-tangy flavor in my Baked Sweet and Sour Chicken, this is a good next dinner to try. The flavor profile is different, but it scratches the same sweet-savory chicken itch.
The Sauce Does Most of the Work
There isn’t much point in making a teriyaki casserole if the sauce disappears once it hits the rice.
For this one, low-sodium soy sauce provides the salty base, brown sugar rounds it out, and rice vinegar keeps the sweetness from becoming flat. Fresh ginger and garlic do more here than garlic powder ever could; you can actually taste them after baking.
Cornstarch goes in at the end.
The sauce only needs a minute or two on the stove after the slurry is added. You’re looking for something that flows easily but leaves a thin coating on a spoon. Don’t reduce it into a heavy glaze. The rice still needs enough loose sauce to absorb while the casserole heats in the oven.
A teaspoon of toasted sesame oil is enough. More can overpower the ginger and turn the entire pan noticeably sesame-heavy.
A Few Ingredients Worth Paying Attention To
Chicken breast: Cut it into pieces around ¾ to 1 inch. Tiny cubes dry out quickly; oversized chunks can still be cooking while the rest of the casserole is already hot.
Chicken thighs can be used instead. They have a richer flavor and are a little more forgiving in the oven.
Rice: Cold leftover long-grain or jasmine rice is especially useful here because the grains are drier and separate more easily. Freshly cooked rice works too—just let it cool for a few minutes before mixing it with the sauce.
Broccoli: Keep the florets fairly small. Large pieces take longer to become tender and make the casserole awkward to scoop.
Carrots: Shredded carrots are easier than thick slices because they soften quickly without needing to be cooked separately.
If chicken, rice, and broccoli are more your comfort-food territory than teriyaki, my Baked Potato Chicken and Broccoli Casserole goes in the opposite direction with a creamy sauce, potatoes, and cheese.
How to Put the Casserole Together
Start with the sauce.
Add the soy sauce, water, brown sugar, rice vinegar, garlic, ginger, and sesame oil to a small saucepan. Bring it to a gentle simmer rather than a hard boil.
Stir the cornstarch and cold water together separately until there are no dry pockets left, then whisk that mixture into the saucepan.
Within a minute or two, the sauce will turn noticeably glossier. Pull it from the heat at that point.
Now brown the chicken.
A wide skillet is better than a small saucepan because the pieces have room to make contact with the pan. Heat a tablespoon of neutral oil over medium-high heat, add the chicken, and leave it alone long enough to pick up a little color before stirring.
You’re not trying to cook it until dry and firm. The goal is light browning and a mostly cooked center; the oven will finish the job.
Add the rice, broccoli, shredded carrots, chicken, and about three-quarters of the sauce to a large bowl. Fold rather than aggressively stir so the rice doesn’t turn pasty.
Spread everything into a greased 9×13-inch baking dish.
At this stage, take a look at the mixture before adding the rest of the sauce. The grains should look coated and glossy, but there shouldn’t be a puddle underneath them. Spoon the remaining sauce over any dry-looking areas.
Cover with foil and bake at 375°F for 20 minutes. Remove the foil and give it another 5 to 8 minutes, just until the edges are bubbling and the chicken reaches 165°F in the thickest pieces.
Let the casserole stand for about five minutes before serving.
That short rest is useful. Straight from the oven, the sauce is still loose and very hot. A few minutes gives the rice time to take up a little more of it without becoming soggy.
Finish with sliced green onions and sesame seeds if you have them.
Don’t Let the Rice Turn Mushy
The biggest mistake here is starting with very soft, wet rice and then drowning it in sauce.
Rice that has been cooked until just tender works better. If you’ve made it specifically for this recipe, spread it on a plate or sheet pan for several minutes after cooking so excess steam can escape.
Cold leftover rice is even easier.
And resist the urge to pour in extra water because the casserole looks slightly dry before baking. The broccoli and chicken both release some moisture as they heat.
This is also why the sauce is thickened before everything goes into the oven: it coats the ingredients instead of leaving them sitting in soy-flavored liquid.
Fresh or Frozen Broccoli?
Fresh broccoli gives you the most control over the texture.
Frozen broccoli works, but thaw it first and pat away excess moisture. Putting frozen florets directly into the casserole can water down the sauce as the ice melts.
There’s no need to fully cook fresh broccoli beforehand. Small florets soften under the foil while keeping some bite.
If you prefer broccoli very soft, microwave the florets for about 60 to 90 seconds before assembling the dish.
An Easy Shortcut With Cooked Chicken
Already have cooked chicken?
Use about 3 cups of chopped or shredded chicken and skip the skillet step.
Rotisserie chicken is fine too. Because both rotisserie chicken and soy sauce can be salty, this is one situation where low-sodium soy sauce is especially helpful.
Fold the cooked chicken into the rice with the vegetables and sauce, then bake just until everything is hot.
For an even more hands-off chicken-and-rice dinner, you might also like my Amazing Forgotten Chicken. That one uses a completely different creamy onion flavor profile and cooks the rice right in the baking dish.
A Couple of Variations That Actually Make Sense
Pineapple: Drain canned pineapple chunks very well and fold in about 1 cup. The acidity works naturally with the sweet soy sauce, but excess pineapple juice will thin it.
Bell pepper: Thin strips of red bell pepper add sweetness and stay slightly firmer than broccoli.
Spicy teriyaki: Add 1 to 2 teaspoons of chili garlic sauce or sriracha to the saucepan. Taste before adding more—the heat becomes more noticeable once the sauce reduces.
Chicken thighs: Use the same weight of boneless, skinless thighs and cut them into similar-sized pieces.
I wouldn’t add cheese here. It can work technically, but it muddies the cleaner soy-ginger flavor that makes this casserole different from a standard creamy chicken bake.
What to Serve With It
You don’t need much beside it because you’ve already got chicken, rice, and vegetables in the pan.
A cool cucumber salad is probably the nicest contrast. Edamame, steamed green beans, or a simple cabbage slaw also work without competing with the sauce.
For a bigger spread, keep the sides fresh rather than creamy—the casserole already has enough sweetness and starch on its own.
Leftovers
Refrigerate cooled leftovers in a covered container for up to 3 to 4 days.
Rice absorbs more sauce while it sits, so leftovers will be a little drier the next day. Add a teaspoon or two of water before microwaving a portion, then cover it loosely. That little bit of steam softens the rice again without washing out the teriyaki flavor.
You can also freeze individual portions. Let them cool completely first, pack them tightly, and freeze for up to about 2 months for best texture.
Broccoli will soften somewhat after freezing and reheating, so if you’re intentionally making this for the freezer, don’t overcook the vegetables the first time.
Teriyaki Chicken Casserole Recipe
Ingredients
Casserole
- 1½ pounds boneless skinless chicken breasts
- 1 tablespoon avocado oil or other neutral cooking oil
- 4 cups cooked long-grain white or jasmine rice
- 3 cups small broccoli florets
- 1 cup shredded carrots
- 3 green onions thinly sliced, optional
- 1 tablespoon sesame seeds optional
Teriyaki Sauce
- ½ cup low-sodium soy sauce
- ½ cup water
- ¼ cup packed light brown sugar
- 2 tablespoons rice vinegar
- 2 teaspoons freshly grated ginger
- 2 garlic cloves finely minced
- 1 teaspoon toasted sesame oil
- 1 tablespoon cornstarch
- 2 tablespoons cold water
Instructions
- Heat the oven to 375°F and lightly grease a 9x13-inch baking dish.
- Cut the chicken into roughly ¾- to 1-inch pieces.
- Add the soy sauce, ½ cup water, brown sugar, rice vinegar, ginger, garlic, and sesame oil to a small saucepan. Bring to a gentle simmer over medium heat.
- Stir the cornstarch with 2 tablespoons cold water until smooth. Slowly whisk it into the simmering sauce.
- Cook for 1 to 2 minutes, stirring, until the sauce becomes glossy and lightly thickened. Remove from the heat.
- Heat the oil in a large skillet over medium-high heat. Add the chicken in a fairly even layer and cook for about 5 to 6 minutes, turning occasionally, until lightly browned and mostly cooked through.
- In a large bowl, combine the cooked rice, broccoli, carrots, chicken, and about three-quarters of the teriyaki sauce. Fold gently until evenly coated.
- Transfer to the prepared baking dish and spread into an even layer. Spoon the remaining sauce over the top.
- Cover with foil and bake for 20 minutes.
- Remove the foil and continue baking for 5 to 8 minutes, or until the casserole is hot throughout and the thickest pieces of chicken reach 165°F.
- Rest for 5 minutes before serving. Finish with sliced green onions and sesame seeds if desired.
Notes
- Cold leftover rice works particularly well because the grains stay separate and absorb the sauce without becoming too soft.
- If using frozen broccoli, thaw it and remove as much excess moisture as possible before adding it.
- For cooked or rotisserie chicken, use about 3 cups and skip browning the chicken.
- To add pineapple, use about 1 cup of well-drained pineapple chunks.
- For more heat, add chili garlic sauce or sriracha to the teriyaki sauce before thickening it.
