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Adorable Japanese Character Bento Box Recipe with Easy Onigiri Rice Balls Ideas

japanese character bento box recipe - featured image

Create cute and delicious Japanese character bento boxes featuring easy-to-make onigiri rice balls shaped like tiny animals and characters. Perfect for kids’ lunches, parties, or a fun culinary project.

Ingredients

Scale
  • 1 ½ cups (300g) short-grain Japanese rice
  • 2 tablespoons rice vinegar
  • 1 teaspoon salt
  • Water (as needed for cooking rice)
  • ½ cup (75g) cooked salmon flakes, lightly salted
  • Optional: finely chopped pickled plum (umeboshi)
  • ½ cup (75g) cooked tuna mixed with mayo
  • ½ cup (75g) cooked vegetables like chopped spinach or carrots
  • Nori sheets (seaweed), cut into tiny shapes for eyes and mouths
  • Black and white sesame seeds
  • Thin carrot slices cut into shapes
  • Optional: cheese slices cut into small shapes
  • Optional extras: soy sauce for dipping or seasoning
  • Optional: plastic wrap or onigiri molds to help shape the rice

Instructions

  1. Rinse 1 ½ cups (300g) of short-grain Japanese rice under cold water until the water runs clear.
  2. Cook the rice in a rice cooker or on the stovetop with 1 ¾ cups (415ml) of water for about 20 minutes, then let it rest off the heat for 10 minutes.
  3. While the rice cooks, mix 2 tablespoons rice vinegar with 1 teaspoon salt in a small bowl until dissolved.
  4. Transfer the cooked rice to a large bowl and gently fold in the vinegar mixture while the rice is still warm using a cutting motion to avoid crushing grains.
  5. Let the rice cool slightly until warm but not hot.
  6. Prepare fillings such as salmon flakes, tuna mayo, or cooked vegetables in small bowls.
  7. Wet your hands with water and sprinkle a pinch of salt on them to prevent sticking and add seasoning.
  8. Take about ⅓ cup (60g) of rice, flatten it slightly in your palm, place about 1 tablespoon of filling in the center, then gently mold the rice around it to form a triangle or ball shape. Use molds if preferred.
  9. Cut nori into small shapes for eyes, mouths, and other features using scissors or small cutters.
  10. Decorate the rice balls with nori shapes, sesame seeds, carrot slices, and cheese slices using tweezers or fingers.
  11. Wrap rice balls in plastic wrap if packing for later.
  12. Assemble the bento box by placing onigiri rice balls with colorful sides like steamed broccoli, cherry tomatoes, tamagoyaki, or pickled vegetables.

Notes

Use short-grain Japanese rice for best stickiness and shaping. Wet hands with salted water to prevent rice sticking. Add nori decorations just before serving to keep them crisp. Store wrapped tightly in plastic wrap in an airtight container for up to 24 hours. Reheat gently in microwave for 15-20 seconds without nori decorations. For gluten-free, use gluten-free soy sauce or omit. For dairy-free, skip cheese or substitute with avocado slices.

Nutrition

Keywords: onigiri, bento box, Japanese rice balls, cute lunch, kids lunch, character bento, easy onigiri, rice balls recipe