Onigirazu, or Japanese rice sandwiches, are a delightful fusion of traditional sushi and modern convenience. These portable snacks are perfect for lunchboxes, picnics, or a quick meal on the go. With layers of fresh vegetables, savory ham, and creamy cheese, all wrapped in a sheet of nori, they offer a balanced and flavorful bite.
One ingredient you might not have readily available at home is nori, which is dried seaweed used in many Japanese dishes. You can find it in the international or Asian section of most supermarkets. Make sure to get the large sheets typically used for sushi. The other ingredients like cucumber, carrot, ham, and cheese are more common and should be easy to find.

Ingredients For Japanese Rice Sandwich (Onigirazu)
Cooked rice: The base of the sandwich, providing a soft and sticky texture to hold everything together.
Nori: Dried seaweed sheets that wrap around the rice and fillings, adding a unique umami flavor.
Cucumber: Adds a refreshing crunch and lightness to the sandwich.
Carrot: Provides a sweet and crisp texture, balancing the other flavors.
Ham: Offers a savory and slightly salty taste, complementing the other ingredients.
Cheese: Adds a creamy and rich element, making the sandwich more indulgent.
Technique Tip for This Recipe
When spreading the cooked rice on the nori, wet your fingers with a little water to prevent the rice from sticking to your hands. This will make it easier to evenly distribute the rice and achieve a uniform layer.
Suggested Side Dishes
Alternative Ingredients
cooked rice - Substitute with quinoa: Quinoa is a nutritious grain that provides a similar texture and can be used as a base for the sandwich.
cooked rice - Substitute with cauliflower rice: Cauliflower rice is a low-carb alternative that mimics the texture of rice and is suitable for those on a keto diet.
nori - Substitute with rice paper: Rice paper can be used to wrap the ingredients, providing a different texture but still holding everything together.
nori - Substitute with lettuce leaves: Lettuce leaves can be used to wrap the ingredients, offering a fresh and crunchy alternative.
sliced cucumber - Substitute with zucchini slices: Zucchini slices provide a similar crunch and can be used as a fresh vegetable component.
sliced cucumber - Substitute with bell pepper strips: Bell pepper strips add a sweet and crunchy element to the sandwich.
julienned carrot - Substitute with radish slices: Radish slices offer a similar crunch and a slightly spicy flavor.
julienned carrot - Substitute with jicama sticks: Jicama sticks provide a crunchy texture and a mildly sweet flavor.
ham - Substitute with turkey slices: Turkey slices are a leaner alternative and provide a similar savory flavor.
ham - Substitute with tofu slices: Tofu slices are a vegetarian option that can be marinated for added flavor.
cheese - Substitute with avocado slices: Avocado slices add creaminess and healthy fats, making them a great alternative to cheese.
cheese - Substitute with hummus: Hummus provides a creamy texture and a rich flavor, suitable for those avoiding dairy.
Other Alternative Recipes Similar to This Dish
How to Store / Freeze This Recipe
- Allow the rice sandwiches to cool completely before storing. This prevents condensation, which can make the nori soggy.
- Wrap each onigirazu individually in plastic wrap or parchment paper. This helps maintain their shape and keeps them fresh.
- Place the wrapped onigirazu in an airtight container. This adds an extra layer of protection against moisture and odors.
- Store the container in the refrigerator if you plan to consume the rice sandwiches within 1-2 days. This keeps the ingredients fresh and safe to eat.
- For longer storage, place the individually wrapped onigirazu in a freezer-safe bag. Squeeze out as much air as possible before sealing to prevent freezer burn.
- Label the bag with the date to keep track of how long they’ve been stored. Onigirazu can be frozen for up to one month without significant loss of quality.
- When ready to eat, thaw the onigirazu in the refrigerator overnight. This ensures they defrost evenly and maintain their texture.
- For a quicker option, you can microwave the rice sandwiches on a low setting for a few minutes. Be cautious not to overheat, as this can make the nori tough and chewy.
- Enjoy your Japanese rice sandwiches at room temperature or slightly warmed. They make a perfect portable meal or snack!
How to Reheat Leftovers
Microwave Method:
- Wrap the onigirazu in a damp paper towel to keep it moist.
- Place it on a microwave-safe plate.
- Heat on medium power for 30-45 seconds. Check if it's warmed through; if not, continue in 10-second intervals.
- Let it sit for a minute before unwrapping to allow the heat to distribute evenly.
Steaming Method:
- Place the onigirazu in a heatproof dish.
- Set up a steamer or use a pot with a steaming rack and a small amount of water.
- Steam for about 5-7 minutes until heated through.
- Carefully remove and let it cool slightly before serving.
Pan Method:
- Lightly grease a non-stick pan with a bit of olive oil or sesame oil.
- Place the onigirazu in the pan over medium-low heat.
- Cover with a lid to trap the heat and cook for 2-3 minutes on each side, ensuring it warms evenly.
- Remove from the pan and let it cool slightly before enjoying.
Oven Method:
- Preheat your oven to 350°F (175°C).
- Wrap the onigirazu in aluminum foil to prevent it from drying out.
- Place it on a baking sheet and heat for about 10-15 minutes.
- Check if it's warmed through; if not, continue heating for an additional 5 minutes.
- Let it cool slightly before unwrapping and serving.
Best Tools for This Recipe
Plastic wrap: Used to lay on a flat surface to help shape and wrap the onigirazu.
Flat surface: Provides a stable area to assemble the onigirazu.
Knife: Essential for slicing the cucumber and julienning the carrot.
Cutting board: Protects your countertop and provides a safe surface for cutting vegetables.
Measuring cup: Ensures you use the correct amount of cooked rice for each onigirazu.
Bowl: Holds the cooked rice, making it easy to scoop and measure.
Plastic wrap: Used again to help shape the onigirazu into a square.
Sharp knife: Necessary for cutting the onigirazu in half once it has set.
How to Save Time on Making This Recipe
Prepare the filling: Slice the cucumber and julienne the carrot in advance. Store them in the fridge to save time during assembly.
Use leftover rice: Utilize leftover cooked rice from a previous meal. This reduces cooking time and makes the process quicker.
Assembly line: Lay out all ingredients and tools before starting. This helps streamline the process and ensures you have everything you need at hand.
Pre-cut nori: Cut the nori sheets to the desired size beforehand. This saves time and ensures uniformity in your onigirazu.

Japanese Rice Sandwich (Onigirazu) Recipe
Ingredients
Main Ingredients
- 2 cups Cooked Rice
- 4 sheets Nori (Seaweed)
- 1 Cucumber sliced
- 1 Carrot julienned
- 4 slices Ham
- 4 slices Cheese
Instructions
- 1. Lay a sheet of plastic wrap on a flat surface. Place a sheet of nori on top.
- 2. Spread about ½ cup of cooked rice in the center of the nori sheet.
- 3. Layer with cucumber, carrot, ham, and cheese.
- 4. Add another ½ cup of rice on top of the fillings.
- 5. Fold the nori sheet over the fillings, using the plastic wrap to help shape it into a square.
- 6. Let it sit for a few minutes to set, then unwrap and cut in half.
Nutritional Value
Keywords
Suggested Appetizers and Desserts for This Recipe
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