A baked rice casserole with soy-glazed chicken, sweet carrots, and a savory dashi custard, inspired by Japanese home-style oven dishes.
Baked casseroles aren't a traditional Japanese format, but this dish draws on two real Japanese techniques: takikomi-style seasoned rice, and oyakodon-style dashi-soy custard that Japanese home cooks use to bind chicken and rice together. Layering those flavors into a baked casserole makes a dish that tastes distinctly Japanese even though the format — a baking dish finished in the oven — is a Western-style convenience. The carrots are cooked down first with the chicken in a soy-mirin glaze so they turn tender and slightly caramelized rather than staying raw and crunchy under the rice. A light dashi-and-egg mixture poured over the top before baking sets into a savory custard that holds the casserole together, similar to how egg binds oyakodon. The finished dish has layers of glazed chicken and sweet carrots, rice that's absorbed savory dashi, and a barely-set egg custard on top — comforting, familiar, and easy to portion out for a family dinner.
Serves 4
Heat oil in a large skillet over medium-high heat. Add chicken and cook 4-5 minutes until browned on most sides, then add onion and carrots and cook 5 more minutes until the onion softens.
Add soy sauce, mirin, and sugar to the skillet. Simmer 5-6 minutes, stirring occasionally, until the liquid reduces to a sticky glaze that coats the chicken and carrots.
Cook the glaze down until it clings to the meat rather than pooling in the pan — a watery glaze will make the casserole soggy once it's layered with rice.
Preheat oven to 375°F (190°C). Spread rice evenly in a greased baking dish, then top with the glazed chicken and carrot mixture, spreading it out evenly.
Whisk eggs, dashi, and salt together until smooth, then pour evenly over the chicken and rice layer.
Bake 18-20 minutes until the egg custard is just set with a slight jiggle in the center — it will continue to firm up as it cools. Top with scallions and serve warm.
Slice carrots thin and even so they cook through fully during the stovetop glazing step, not just in the oven.
Pull the casserole out while the custard still has a slight jiggle in the center — it firms up quickly as it rests and overbaking makes it rubbery.
Use chicken thigh rather than breast; it stays juicier through both the stovetop searing and the oven bake.
Swap chicken for thinly sliced pork for an oyakodon-adjacent flavor twist.
Add sautéed mushrooms or a handful of frozen peas to the chicken mixture for more texture.
Skip the egg custard and finish with a drizzle of kewpie mayo and scallions for a different, richer topping.
Refrigerate covered up to 3 days. Reheat individual portions in the microwave, or cover with foil and warm in a 325°F oven for about 15 minutes.
This casserole borrows directly from oyakodon, a dish invented in Tokyo in the late 19th or early 20th century that simmers chicken and onion in a soy-dashi sauce, then finishes it with a loosely set egg poured over rice. Baking it as a casserole is a modern home-kitchen adaptation for feeding a family from one dish rather than individual bowls.
Yes — skip the raw chicken searing step, shred the rotisserie chicken, and toss it with the carrot-onion mixture and glaze for the last few minutes just to warm through and coat it.
This usually means it needed a few more minutes in the oven, or the dashi-to-egg ratio was too liquid — stick close to 3 eggs to half a cup of dashi for a custard that sets properly.
Assemble everything up through pouring the egg custard, cover, and refrigerate up to a day ahead, then bake straight from the fridge, adding about 5 extra minutes to the bake time.
Per serving (380g / 13.4 oz) · 4 servings total
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