Onigiri Burger Kansai Airport Recipe

This onigiri burger, inspired by the popular snack sold at Kansai Airport, combines the portable convenience of Japanese rice balls with the satisfying structure of a burger. A crisp, savory chicken patty is sandwiched between two pressed and toasted rice buns, brushed with soy sauce and butter for a rich, umami-packed bite. It’s a fun, handheld meal that’s perfect for lunch, a snack, or a travel-inspired dinner at home.

Ingredients

2 cups (370 g) short-grain Japanese rice (like Koshihikari or sushi rice)
2 1/2 cups (600 ml) water
1 lb (450 g) ground chicken (or ground pork)
1/2 small onion, finely grated (about 2 tablespoons)
1 tablespoon soy sauce
1 teaspoon grated fresh ginger
1/2 teaspoon salt
1/4 teaspoon black pepper
1 tablespoon vegetable oil (for cooking patties)
4 slices cheddar or processed cheese (optional)
4 lettuce leaves
4 tablespoons soy sauce (for brushing rice buns)
2 tablespoons unsalted butter, melted
2 tablespoons toasted sesame seeds (optional)

Instructions

Rinse the rice in a fine-mesh strainer under cold water until the water runs clear. Combine rice and 2 1/2 cups (600 ml) water in a rice cooker or heavy-bottomed pot. Cook according to your rice cooker’s settings, or bring to a boil, cover, reduce heat to low, and simmer for 15 minutes. Remove from heat and let stand, covered, for 10 minutes. Fluff with a rice paddle.
While the rice cooks, make the chicken patties. In a bowl, combine ground chicken, grated onion, 1 tablespoon soy sauce, ginger, salt, and pepper. Mix until just combined (don’t overmix). Divide into 4 equal portions and shape into thin, round patties about 4 inches (10 cm) in diameter and 1/2 inch (1.25 cm) thick.
Heat vegetable oil in a large nonstick skillet over medium-high heat. Add the chicken patties and cook for 4-5 minutes per side, until golden brown and cooked through. The internal temperature should reach 165°F (74°C) as measured with a food thermometer (USDA FSIS safe minimum for poultry). If using cheese, place a slice on each patty during the last minute of cooking and cover the pan to melt.
While patties cook, prepare the rice buns. Wet your hands with water (to prevent sticking) and divide the warm rice into 8 equal portions. Press each portion into a compact, flat disc about 4 inches (10 cm) in diameter and 1/2 inch (1.25 cm) thick. Make them firm enough to hold together.
In a small bowl, mix the 4 tablespoons soy sauce and melted butter. Brush one side of each rice disc with this mixture.
Heat a clean nonstick skillet or griddle over medium heat. Place the rice discs, brushed side down, and cook for 2-3 minutes until golden brown and slightly crispy. Brush the top side with more soy-butter mixture, flip, and cook the other side for 2-3 minutes. Repeat with all discs. They should be nicely toasted on both sides.
To assemble, place one rice disc (toasted side up) on a plate. Add a lettuce leaf, then a chicken patty. Top with another rice disc (toasted side down, so the crispy side is outside). Press gently. Sprinkle with sesame seeds if using. Serve immediately while warm.

Tips

Rice texture: Use short-grain rice; it’s sticky enough to hold together. If you only have long-grain, add a little more water and let it cook longer, but the buns may be less cohesive.
Keep hands wet: Always wet your hands before shaping the rice buns to prevent sticking. Keep a small bowl of water nearby.
Make ahead: You can cook the chicken patties and rice buns in advance. Store them separately in the fridge and assemble just before eating. Reheat the buns in a toaster oven or dry skillet to re-crisp.
Don’t overmix the chicken: Overworking ground chicken makes the patties tough. Mix just until the ingredients are combined.

Serving Suggestions

Serve the onigiri burgers warm, with a side of pickled vegetables (like takuan or cucumber), a simple green salad, or a bowl of miso soup. They are also great for picnics or bento boxes—just wrap them in plastic wrap once cooled slightly.

Variations

Teriyaki Chicken: Instead of plain soy sauce, glaze the chicken patties with a homemade teriyaki sauce (soy, mirin, sugar, and sake) during the last minute of cooking.
Pork Katsu Style: Use thin pork cutlets, breaded and fried, instead of ground chicken. Cook to 145°F (63°C) with a 3-minute rest.
Vegetarian: Use a thick slice of firm tofu or a store-bought vegetable patty. Cook until heated through and crispy.
Spicy Mayo: Add a drizzle of sriracha-mayo or yuzu kosho mayo to the burger for a spicy kick.

Storage and Reheating

Store assembled burgers in an airtight container in the refrigerator for up to 2 days. However, the rice will harden and the lettuce will wilt. For best results, store the components separately: rice buns in one container, patties in another. Refrigerate for up to 3 days. To reheat, place the rice buns in a toaster oven or dry skillet for 2-3 minutes per side until crispy. Reheat the patties in a microwave or skillet until hot, 165°F (74°C) for leftovers. Assemble fresh with new lettuce.

Frequently Asked Questions

Can I use regular long-grain rice? Yes, but the buns will be less sticky and may fall apart more easily. Add a teaspoon of starch (like potato starch) to the rice while cooking to help bind it.

Can I make this gluten-free? Use tamari or a gluten-free soy sauce substitute. Ensure your other ingredients (like the chicken) are gluten-free.

Can I grill the rice buns instead of pan-frying? Yes, you can grill them on a barbecue or grill pan. Brush with the soy-butter mixture and grill for 2-3 minutes per side over medium heat.

How do I keep the rice buns from sticking to the pan? Use a nonstick pan and make sure it’s hot before adding the rice. The soy-butter mixture also helps prevent sticking. If needed, add a little more oil.

Can I freeze the cooked patties? Yes, cooked chicken patties freeze well for up to 2 months. Cool completely, wrap individually in plastic wrap, and place in a freezer bag. Thaw in the refrigerator before reheating.

What if I don’t have a rice cooker? Use a heavy-bottomed pot with a tight-fitting lid. Follow the stovetop instructions in step 1. The key is to not lift the lid during cooking.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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