30-Minute Salmon and Seaweed Spinach Rice Balls

Japanese-style rice balls combining cooked salmon, nutty sesame oil, and a savory spinach-seaweed filling. The contrast of creamy salmon interior with crispy seaweed strips makes these ideal for bento boxes, light lunches, or appetizers. This version layers umami flavors through soy sauce and toasted sesame, then hand-shapes each ball for a homemade touch that beats store-bought onigiri.
Ingredients
- ⅓ cup white rice, cooked
- ⅓ bunch fresh spinach, whole
- 1 sheet dried seaweed, whole
- 1 can salmon, drained
- 2 tablespoon sesame seeds, whole
- 1 tablespoon soy sauce
- 2 tablespoon sesame oil
- salt, to taste
Instructions
- 1
Blanch spinach in boiling salted water for 10 seconds.
- 2
Rinse in cold water and squeeze dry.
- 3
Finely chop the spinach.
- 4
Cut seaweed sheet into strips using kitchen shears.
- 5
Mix chopped spinach with soy sauce, sesame seeds, and sesame oil.
- 6
Combine cooked rice, salmon, sesame oil, salt, and sesame seeds in a separate bowl.
- 7
Flatten a portion of salmon rice in your palm.
- 8
Place a spoonful of spinach mixture in the center.
- 9
Cover with another portion of rice and shape into a ball.
- 10
Repeat with remaining ingredients.
Tips
Wet your hands lightly with water before shaping to prevent rice from sticking and help seal the balls smoothly.
Drain canned salmon thoroughly and break into small flakes for even distribution throughout the rice.
Squeeze spinach aggressively after blanching to remove moisture, preventing soggy rice balls.
Good to Know
Refrigerate up to 2 days in an airtight container. These are best served at room temperature or slightly chilled.
Prepare spinach filling up to 8 hours ahead; store separately from rice. Form balls within 2 hours of serving for best texture.
Arrange on a platter with pickled ginger and extra soy sauce for dipping. Serve at room temperature as part of a bento lunch or Japanese appetizer spread.
Common Mistakes
Do not skip the spinach-squeezing step to avoid watery, mushy rice balls.
Do not mix spinach filling into rice before shaping to avoid muddled flavors and uneven texture.
Do not use hot rice when forming balls to avoid burning your hands.
Substitutions
Vegan Options
Gluten-Free Swaps
General Alternatives
FAQ
Can I make these ahead for a packed lunch?
Yes, form them up to 6 hours in advance and store in an airtight container. They're actually easier to handle at room temperature. Wrap individually in plastic wrap to prevent drying.
What if I don't have canned salmon?
Use flaked cooked fresh salmon, or substitute with canned tuna. Adjust salt levels since canned products vary. Smoked salmon also works but may be saltier.
Can I freeze these rice balls?
Yes, freeze up to 1 month in an airtight container or freezer bag. Thaw at room temperature for 1-2 hours before serving. Texture remains good but seaweed strips may soften.