Seaweed-Wrapped Rice Balls with Spicy Tuna Filling
Tender sushi rice formed into neat triangles and wrapped in crisp nori sheets, filled with a creamy, spicy tuna mix that offers a perfect balance of heat and umami. This japanese-inspired sushi ready in about 45 minutes pairs sushi rice, water, rice vinegar for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 calories and feeds 5, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 cups sushi rice
- 2 1/4 cups water
- 3 tbsp rice vinegar
- 1 tbsp sugar
- 1 tsp salt
- 5 sheets nori sheets
- 8 oz fresh tuna sashimi-grade
- 3 tbsp mayonnaise
- 1 tbsp Sriracha sauce
- 1 tsp soy sauce
- 1 tsp sesame oil
- 2 tbsp thinly sliced scallions
- 1 tbsp toasted sesame seeds
Instructions
- Step 1: Rinse 2 cups sushi rice under cold water until water runs clear, then combine with 2 1/4 cups water in a rice cooker and cook according to manufacturer's instructions.
- Step 2: In a small bowl, mix 3 tbsp rice vinegar, 1 tbsp sugar, and 1 tsp salt until dissolved; fold this seasoning gently into the hot cooked rice and let it cool to room temperature.
- Step 3: Dice 8 oz fresh tuna into small cubes and combine with 3 tbsp mayonnaise, 1 tbsp Sriracha sauce, 1 tsp soy sauce, 1 tsp sesame oil, and 2 tbsp thinly sliced scallions; mix until evenly coated and creamy.
- Step 4: Lay out one nori sheet and moisten your hands with water to prevent sticking; take about 1/3 cup of sushi rice and shape into a firm triangle approximately 3 inches wide.
- Step 5: Create a small indentation in the rice triangle and spoon about 2 tbsp of the spicy tuna mixture into the center, then gently mold the rice around the filling to seal it.
- Step 6: Repeat with remaining rice and filling to make 5 rice balls; sprinkle 1 tbsp toasted sesame seeds over the top of each for a nutty finish.
- Step 7: Serve the seaweed-wrapped rice balls immediately with soy sauce and pickled ginger on the side for dipping and cleansing the palate.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Seaweed-Wrapped Rice Balls with Spicy Tuna Filling take to make?
Total time is about 45 minutes (25 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Seaweed-Wrapped Rice Balls with Spicy Tuna Filling?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep sushi rice from drying out.
Can I substitute ingredients in Seaweed-Wrapped Rice Balls with Spicy Tuna Filling?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Seaweed-Wrapped Rice Balls with Spicy Tuna Filling for a different number of people?
The recipe is written for 5 servings. Multiply each ingredient by (your serving target / 5). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
What goes well with Seaweed-Wrapped Rice Balls with Spicy Tuna Filling?
Japanese sushi like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.
