Quick Recipe Version (TL;DR)
Quick Ingredients
- 4 cups cooked Japanese short-grain rice (about 680 g)
- Unsalted butter, 4 tbsp total (3 tbsp for rice, 1 tbsp for greasing)
- Soy sauce, 1 tbsp; toasted sesame oil, 1 tsp; kosher salt, 1/2 tsp; white pepper, 1/4 tsp
- Neutral oil, 1 tbsp; 1 small onion (150 g) finely diced; 1 medium carrot (100 g) diced; 2 garlic cloves, minced
- Ground beef or pork, 8 oz (225 g); chicken stock, 2 cups (480 ml); Japanese curry roux, 3.5 oz (100 g)
- Worcestershire sauce, 1 tbsp; honey or sugar, 1 tsp
- OR curry béchamel: butter 3 tbsp, flour 3 tbsp, warm milk 2 cups, curry powder 1 to 1.5 tsp, salt to taste
- Shredded mozzarella, 2 cups (200 g); shredded sharp cheddar or Gruyère, 1/2 cup (50 g); grated Parmesan, 2 tbsp (10 g)
- Chopped parsley or scallions, to garnish; Japanese pickles (fukujinzuke or beni shoga), optional
Do This
- 1. Heat oven to 475°F (245°C). Butter a 2-quart (or 9×9-inch) baking dish or 4 small gratin dishes.
- 2. Toss warm rice with 3 tbsp melted butter, soy sauce, sesame oil, salt, and white pepper; pack into dish.
- 3. Sauce (Option A): Sauté onion/carrot in oil; brown meat; add garlic. Add stock; simmer 5 min. Stir in curry roux, Worcestershire, honey; thicken 3–5 min.
- 4. Sauce (Option B): Make a béchamel by whisking flour into melted butter 1 min; slowly whisk in warm milk; simmer 3–5 min. Stir in curry powder and salt.
- 5. Spoon 3–3.5 cups sauce over rice (thick, spoonable—do not flood). Top with mozzarella, cheddar/Gruyère, and Parmesan.
- 6. Bake 10–12 min until bubbling with caramelized spots; broil 1–2 min if needed.
- 7. Rest 5 min; garnish with parsley/scallions. Serve hot with Japanese pickles.
Why You’ll Love This Recipe
- Comforting Japanese gratin meets curry night—gooey, savory, and deeply satisfying.
- Two sauce paths: classic Japanese curry or a silky curry-spiked béchamel.
- Perfect use for day-old rice and leftover curry—fast assembly, big payoff.
- Family-friendly flavors with easy ways to turn up the spice or add protein.
Grocery List
- Produce: 1 small onion, 1 carrot, garlic, parsley or scallions
- Dairy: Unsalted butter, milk (if making béchamel), mozzarella, cheddar or Gruyère, Parmesan
- Pantry: Japanese short-grain rice, neutral oil, soy sauce, toasted sesame oil, Japanese curry roux (or curry powder + flour), chicken stock, Worcestershire sauce, honey/sugar, salt, white pepper
Full Ingredients
Buttered Rice
- 4 cups cooked Japanese short-grain rice (about 680 g; warm or room temp)
- Unsalted butter, 3 tbsp (42 g), melted
- Soy sauce, 1 tbsp
- Toasted sesame oil, 1 tsp
- Kosher salt, 1/2 tsp; white pepper, 1/4 tsp
- Optional: 1 small garlic clove, minced; 2 tbsp chopped scallions or parsley
Option A: Japanese Curry Meat Sauce
- Neutral oil, 1 tbsp
- Onion, 1 small (150 g), finely diced
- Carrot, 1 medium (100 g), small dice
- Garlic, 2 cloves, minced
- Ground beef (or pork), 8 oz (225 g)
- Chicken stock (or water), 2 cups (480 ml)
- Japanese curry roux blocks, 3.5 oz (about 100 g; typically 4 cubes)
- Worcestershire sauce, 1 tbsp
- Honey or sugar, 1 tsp
- Optional: 1 tsp soy sauce; pinch of garam masala or black pepper to finish
Option B: Curry Béchamel (No Roux Blocks)
- Unsalted butter, 3 tbsp (42 g)
- All-purpose flour, 3 tbsp (24 g)
- Warm milk, 2 cups (480 ml; 2% or whole)
- Japanese-style curry powder, 1 to 1.5 tsp (to taste)
- Kosher salt, 1/2 tsp; white pepper, 1/8 tsp
- Optional: 1 tsp soy sauce; pinch of nutmeg
Assembly & Topping
- Unsalted butter, 1 tbsp (for greasing dish)
- Low-moisture mozzarella, shredded, 2 cups (200 g)
- Sharp cheddar or Gruyère, shredded, 1/2 cup (50 g)
- Parmesan, finely grated, 2 tbsp (10 g)
- To serve: chopped parsley or scallions; Japanese pickles (fukujinzuke or beni shoga), optional

Step-by-Step Instructions
Step 1: Preheat and prepare the baking dish
Place a rack in the middle of the oven and heat to 475°F (245°C). Lightly butter a 2-quart baking dish (or four 12–14 oz individual gratin dishes) with 1 tbsp butter. This high heat ensures fast bubbling and caramelized cheese without drying out the rice.
Step 2: Make the buttered rice base
If using leftover rice, microwave it just until warm and fluffy so it absorbs seasoning. In a bowl, combine 3 tbsp melted butter, soy sauce, toasted sesame oil, salt, and white pepper. Fold in the warm rice (and garlic or herbs if using) until evenly coated. Press the rice into an even 1-inch layer in the prepared dish; do not compact it too firmly—lightly packed grains stay fluffy under the sauce.
If cooking rice from scratch: Rinse 2 cups (360 g) short-grain rice until the water runs mostly clear; drain 10 minutes. Combine with 2 1/4 cups (530 ml) water in a pot; bring to a boil, cover, reduce to low, and cook 15 minutes. Turn off heat and rest covered 10 minutes, then proceed as above. Yields about 4 cups cooked.
Step 3: Make the curry sauce (choose one)
Option A — Japanese Curry Meat Sauce: Heat 1 tbsp oil in a skillet over medium heat. Sauté onion and carrot with a pinch of salt until translucent and lightly golden, 5–6 minutes. Add ground beef; cook and break up until no longer pink, 3–4 minutes. Stir in garlic for 30 seconds. Pour in stock, bring to a simmer for 5 minutes. Off the heat, stir in curry roux blocks to dissolve. Return to low heat and simmer, stirring, until glossy and spoonably thick, 3–5 minutes. Season with Worcestershire and honey (and soy/garam masala if using). The sauce should be thick enough to mound on a spoon; reduce a bit more if thin.
Option B — Curry Béchamel: In a saucepan over medium heat, melt 3 tbsp butter. Whisk in flour and cook, whisking, 1 minute (no browning). Gradually whisk in warm milk to avoid lumps. Bring to a gentle simmer and cook 3–5 minutes until thick and velvety. Season with curry powder, salt, and white pepper (and soy/nutmeg if using). Remove from heat; it should coat the back of a spoon.
Step 4: Assemble the doria
Spoon 3 to 3 1/2 cups of your chosen sauce evenly over the rice. You want a generous blanket but not a soupy pool—aim for a 1/2-inch layer that barely reaches the edges so it can caramelize. Sprinkle the mozzarella and cheddar/Gruyère evenly over the top, then dust with Parmesan.
Step 5: Bake until bubbling and caramelized
Bake at 475°F (245°C) for 10–12 minutes, until the cheese is fully melted with deep golden spots and the edges are sizzling. For extra color, switch to broil for 1–2 minutes; watch closely. The center should be molten and the edges slightly browned and sticky.
Step 6: Rest, garnish, and serve
Let the doria rest 5 minutes so the lava-hot center settles slightly. Sprinkle with chopped parsley or scallions. Serve immediately with Japanese pickles like fukujinzuke or beni shoga for a bright, crunchy contrast.
Pro Tips
- Use day-old rice if possible; the grains stay distinct under the sauce and cheese.
- Thick sauce is key. If it looks runny, simmer a few extra minutes before assembling.
- For maximum browning, use low-moisture mozzarella and pat any excess moisture from the sauce’s surface before topping with cheese.
- Individual gratin dishes brown faster and give everyone extra crispy edges.
- Leftover Japanese curry makes this a 20-minute assembly meal—just rewarm and thicken if needed.
Variations
- Katsu Curry Doria: Layer sliced pork or chicken katsu over the rice before adding sauce and cheese.
- Seafood Doria: Sauté shrimp and scallops in butter; fold into the curry béchamel, then assemble and bake.
- Vegetarian Mushroom Doria: Swap meat for a mix of shiitake and cremini; add spinach during the last minute of sautéing.
Storage & Make-Ahead
Cool leftovers, cover, and refrigerate up to 3 days. Reheat covered at 375°F (190°C) for 15–20 minutes, then uncover 5 minutes to re-crisp. Curry sauce can be made 3 days ahead or frozen up to 3 months; thaw overnight and reheat to thicken before assembling. Assemble unbaked doria up to 24 hours ahead; cover and refrigerate. Bake straight from cold at 425°F (220°C) for 20–25 minutes, then broil to brown.
Nutrition (per serving)
Approximate for curry-roux version: 800 calories; 45 g fat; 62 g carbohydrates; 31 g protein; 1,400–1,700 mg sodium. Values will vary with béchamel option, cheese choices, and added proteins.


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