15-min. Easy Japanese Tuna Onigiri

A fun and easy way to enjoy Japanese cuisine is through 15-min. Easy Japanese Tuna Onigiri! These delicious rice balls are perfect for breakfast, snacks, or even as a quick meal. With just six simple ingredients and minimal prep time, you can whip up these flavorful treats in no time. The combination of tender rice and savory tuna mayo wrapped in crispy seaweed makes them a delightful option for lunchboxes or picnics.

Why You’ll Love This Recipe

• Quick Preparation: With only 15 minutes needed, this recipe is great for busy days.
• Versatile Snack: Enjoy onigiri as a breakfast item, a snack, or as part of a larger meal.
• Customizable Ingredients: Adjust the filling or the amount of nori to suit your taste preferences.
• Healthy Option: Packed with protein from tuna and wholesome carbs from rice, it’s a nutritious choice.
• Kid-Friendly: Fun to make and eat, it’s an ideal recipe for involving kids in the kitchen.

Tools and Preparation

Before you start making your onigiri, gather your tools. Having the right equipment makes the process easier and more enjoyable.

Essential Tools and Equipment

• Rice paddle
• Large bowl
• Fine sieve
• Small bowl
• Onigiri mold (optional)
• Plastic wrap (optional)
• Bowl of water

Importance of Each Tool

• Rice paddle: Perfect for seasoning cooked rice without squishing it.
• Fine sieve: Helps remove excess liquid from canned tuna for better texture.
• Onigiri mold: Makes shaping rice balls easier and more uniform.
• Plastic wrap: Useful for preventing sticky hands when molding onigiri.

Ingredients

This quick and easy Japanese tuna onigiri is made in 15 minutes with only 6 ingredients. Great for breakfast, as a snack, meal, lunchbox item or picnic food!

For the Onigiri

• 2 sheets nori (or use 1/2 sheet if you prefer less)
• 2 cups cooked short grain rice (if you’re making fresh rice, see Notes below)
• 1/2 tsp salt
• 5.29 oz canned tuna (in oil recommended, or canned tuna in water)
• 2 tbsp Japanese mayo (or regular mayonnaise)

For Garnishing

• 1 tsp sesame seeds (for garnishing, optional)

How to Make 15-min. Easy Japanese Tuna Onigiri

Step 1: Prepare the Rice

1. Transfer hot cooked short-grain rice into a large bowl.
2. Season with salt using a rice paddle. Cover and set aside.
3. If using leftover cold rice, cover it and microwave for 2-3 minutes before seasoning.

Step 2: Prepare the Tuna Filling

1. Open the can of tuna and strain it using a fine sieve to remove excess liquids by pressing it with a fork.
2. Transfer the strained tuna to a small bowl.
3. Mix in the Japanese mayo until well combined. Set aside.

Step 3: Prepare Nori Sheets

1. Decide how much nori you want to use based on personal preference.
2. If you prefer more seaweed flavor, cut two nori sheets in half to create four pieces.
3. If you prefer less nori, use half a sheet cut into four equal strips.

Step 4: Shape the Rice Balls

1. Prepare a bowl of water nearby and dip clean hands into it.
2. Take 1/2 cup (100 grams) of cooked rice and place it in your palm.
3. Shape it into a round ball, then flatten it into a pancake about 1/2-inch thick with a dent in the middle.
4. Place 2 tablespoons (30 ml) of tuna mayo mixture into the dent.

Step 5: Form Triangular Shapes

1. Fold the rice over the filling while pushing it into the center gently.
2. Firmly pack it into a ball shape, flattening it to about 1.5 inches thick to form a triangle shape—wetting your hands as needed.

Step 6: Wrap with Nori and Serve

1. Wrap one sheet of nori around the base of the triangle to cover the sides.
2. Repeat this process until all four rice balls are formed.
3. Garnish each piece with sesame seeds if desired and enjoy immediately!

How to Serve 15-min. Easy Japanese Tuna Onigiri

Serving 15-min. Easy Japanese Tuna Onigiri can be a delightful experience, whether you’re enjoying it at home or on the go. These rice balls are versatile and can be paired with various accompaniments to enhance their flavor.

As a Snack

• Pair with fresh veggies: Serve with carrot sticks or cucumber slices for a refreshing crunch.
• Enjoy with dipping sauces: Try soy sauce or a spicy mayo for an extra kick.

In a Lunchbox

• Add seasonal fruits: Pack some sliced apples or berries for a sweet contrast.
• Include pickled veggies: Pickled radishes or cucumbers complement the savory tuna well.

For Picnics

• Serve with salads: A simple green salad or coleslaw can balance the meal.
• Bring along some edamame: Steamed edamame adds a protein-packed side that’s easy to share.

At Breakfast

• Accompany with miso soup: A warm bowl of miso soup makes a comforting breakfast option.
• Pair with tea: Green tea enhances the flavors and provides a soothing start to your day.

How to Perfect 15-min. Easy Japanese Tuna Onigiri

Perfecting your 15-min. Easy Japanese Tuna Onigiri ensures each bite is delicious and satisfying. Here are some tips to help you achieve the best results.

• Use warm rice: Warm rice is easier to mold and helps the rice stick together better than cold rice.
• Adjust seasoning: Taste your tuna mixture before filling; add more mayo or salt if needed for flavor enhancement.
• Wet your hands: Dipping your hands in water prevents the rice from sticking, making shaping easier.
• Experiment with fillings: Feel free to add avocado or cucumber slices inside for extra flavor and texture.
• Store properly: If not eating immediately, wrap in plastic wrap to maintain moisture and freshness.

Best Side Dishes for 15-min. Easy Japanese Tuna Onigiri

Complementing your 15-min. Easy Japanese Tuna Onigiri with the right side dishes can elevate your meal experience. Here are some great options to consider.

1. Miso Soup – A warm, savory soup that pairs perfectly with onigiri, offering comfort and taste.
2. Edamame – Lightly salted steamed edamame adds protein and a fun snack element to your meal.
3. Seaweed Salad – This tangy dish brings umami flavors that harmonize beautifully with tuna onigiri.
4. Cucumber Salad – A refreshing salad dressed in vinegar adds crunch and balances the richness of the tuna.
5. Pickled Vegetables – A variety of pickles can provide a zesty contrast that enhances each bite of onigiri.
6. Steamed Broccoli – Simple steamed broccoli drizzled with sesame oil makes for a nutritious side dish without overwhelming flavors.

Common Mistakes to Avoid

Making 15-min. Easy Japanese Tuna Onigiri can be fun and rewarding, but avoiding common pitfalls ensures the best results. Here are some mistakes to watch out for:

• Using cold rice: Cold rice may not mold well. Always use warm, freshly cooked rice or reheat leftover rice before shaping.
• Not draining the tuna properly: Excess liquid can make the filling soggy. Strain the tuna thoroughly to achieve the right texture.
• Skipping seasoning: Forgetting to add salt to the rice can dull the flavor of your onigiri. Always season your rice for a delicious taste.
• Overfilling the rice balls: Adding too much filling can cause them to break apart. Use about 2 tablespoons of filling for each rice ball.
• Improperly wrapping nori: If nori is not wrapped tightly, it may become soggy. Wrap your onigiri just before eating for maximum crispness.

Storage & Reheating Instructions

Refrigerator Storage

• Store in an airtight container for up to 2 days.
• Keep separate from nori until ready to eat to avoid sogginess.

Freezing 15-min. Easy Japanese Tuna Onigiri

• Freeze in an airtight container or freezer bag for up to one month.
• Wrap each rice ball individually for easier thawing.

Reheating 15-min. Easy Japanese Tuna Onigiri

• Oven: Preheat oven to 350°F (175°C) and heat for about 10 minutes until warm.
• Microwave: Heat on medium power for 30-60 seconds, checking frequently.
• Stovetop: Warm in a skillet over low heat with a lid on for about 5 minutes.

Frequently Asked Questions

Here are some common questions about making 15-min. Easy Japanese Tuna Onigiri that can help clarify your doubts.

Can I use brown rice instead of white?

Yes, you can use brown rice if you prefer a healthier option, but keep in mind it may have a different texture and require more cooking time.

How do I customize my tuna filling?

Feel free to add ingredients like chopped green onions, cucumber, or avocado to mix up the flavor profile of your filling.

Can I make these onigiri ahead of time?

Yes, you can prepare them in advance! Just store them properly in the fridge and wrap the nori right before eating.

What is the best way to serve onigiri?

15-min. Easy Japanese Tuna Onigiri is delightful served with soy sauce or pickled vegetables on the side for added flavor.

How do I prevent my hands from getting sticky while shaping?

Dipping your hands in water before handling the rice will help prevent sticking, making it easier to shape your onigiri.

Final Thoughts

15-min. Easy Japanese Tuna Onigiri is a quick and versatile dish that fits perfectly into any meal plan—from breakfast to lunch or as a snack. Feel free to customize your fillings according to your preferences and enjoy this delightful treat anytime!