Spicy Tuna Crispy Rice

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This dish features golden crispy rice squares crowned with a creamy and spicy tuna blend, accented by fresh avocado slices. The sushi rice is seasoned with mild vinegar and sugar, then pressed and fried for a crunchy texture. The tuna mix combines finely diced sushi-grade fish with a balanced mix of mayonnaise, Sriracha, and sesame flavors, creating a harmonious bite. Garnished with black sesame seeds and green onion, these bites are perfect as an appetizer or party snack, offering a satisfying fusion of textures and flavors.

Updated on Tue, 23 Dec 2025 12:51:00 GMT
Golden, crispy squares of spicy tuna crispy rice topped with creamy tuna and avocado, ready to eat. Pin it
Golden, crispy squares of spicy tuna crispy rice topped with creamy tuna and avocado, ready to eat. | emberthyme.com

I discovered these crispy rice bites at a friend's dinner party where she served them straight from the pan, golden and still warm, and I couldn't stop reaching for more. There's something about that contrast—the snap of hot rice giving way to creamy, spicy tuna—that made me ask for her recipe on the spot. She laughed and admitted she'd been experimenting all afternoon, learning by trial and error. Now I make them whenever I want to impress people without spending hours in the kitchen, and they've become my secret weapon for gatherings.

I made these for my sister's bridal shower last spring, and I remember standing in her kitchen at 6 a.m., frying rice squares while she sipped coffee and told me about her honeymoon plans. The oil popped and sizzled, and the whole house smelled like toasted rice and sesame—by the time her guests arrived, the aroma had everyone asking what smelled so good before they even sat down.

Ingredients

  • Sushi rice: The foundation of everything; short-grain rice holds moisture and stickiness that regular rice can't match, which is what makes these squares hold together when you fry them.
  • Rice vinegar, sugar, and salt: This trio seasons the rice and adds just enough tang to remind you these are sushi-inspired; don't skip the dissolving step in the microwave or the sugar won't fully incorporate.
  • Sushi-grade tuna: This is not the place to compromise; sashimi-grade tuna from a trusted fishmonger keeps you safe and makes the difference between good and unforgettable.
  • Kewpie mayonnaise: If you can find it, grab a bottle; the extra richness and slightly sweet flavor complement the spicy tuna in ways regular mayo can't quite match.
  • Sriracha: The heat source that makes every bite wake up; start with one tablespoon and taste before adding more if you're cooking for people who prefer mild.
  • Sesame oil: Just a teaspoon adds depth and nuttiness that makes people wonder what your secret ingredient is.
  • Avocado: The cooling counterpoint to the spice; slice it just before serving so it stays fresh and creamy rather than turning grey.
  • Vegetable oil for frying: Use neutral oil with a high smoke point so the rice crisps without absorbing a greasy taste.

Instructions

Cook and season the rice:
Rinse the sushi rice until the water runs clear, then cook it with the measured water in a covered saucepan over low heat for 15 minutes before letting it rest another 10 minutes—this resting step is non-negotiable because it lets the rice set properly. While it cools, heat the rice vinegar mixture in the microwave just long enough to dissolve the sugar, then fold it in gently with a cutting motion rather than stirring, which keeps the grains intact.
Press and chill the rice slab:
Line your pan with plastic wrap so you can lift the whole slab out without it falling apart, then press the cooled rice in as an even layer. Refrigerate for at least an hour—overnight is even better because colder rice fries up crispier.
Build the spicy tuna mixture:
Combine the diced tuna with mayo, Sriracha, soy sauce, sesame oil, green onion, and sesame seeds in a separate bowl and refrigerate it while the rice chills so the flavors marry together.
Cut the rice into squares:
Lift the plastic-wrapped slab from the pan and cut it into 16 neat rectangles or squares with a sharp, dry knife—a damp blade will stick, so wipe it between cuts if you need to.
Fry until golden and crispy:
Heat oil in a nonstick skillet to medium-high heat and fry the rice pieces in batches, about 2 to 3 minutes per side, until they're deep golden and you can hear them crackling slightly. Drain them on paper towels immediately so they stay crispy rather than steaming themselves soggy.
Assemble and serve:
Top each warm rice square with a spoonful of the spicy tuna mixture, add a small piece of fresh avocado, and finish with black sesame seeds and green onion if you have them. Serve right away while the rice is still warm and the contrast between crispy and creamy is at its peak.
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| emberthyme.com

These bites became meaningful to me not because of the technique, but because of how they make people pause and connect. At one dinner, a guest who claimed she didn't like sushi grabbed one without thinking, and then asked for the recipe because she couldn't believe how much she loved it—that's when I realized these little squares do something that fancier food sometimes misses: they break down expectations and invite people in.

The Rice Is Everything

I used to think any rice would work, but the sticky, short-grain nature of sushi rice is what holds these together when they're hot and lets them stay firm without shattering. The seasoning matters too—that gentle fold of vinegar and sugar doesn't just flavor the rice, it helps it set with the right texture for frying. The chilling step isn't just about cooling; it's about letting the grains bond so they fry as a single crispy unit instead of falling apart in the oil.

Timing Your Fry

Medium-high heat sounds simple, but I've found the sweet spot is when a grain of rice dropped in the oil sizzles immediately but doesn't brown in seconds—that tells you the temperature is right. Frying in batches instead of crowding the pan matters because the oil temperature will drop if you add too many pieces at once, and they'll soak up oil instead of crisping. I usually do four squares at a time in a standard skillet, which takes about three minutes per batch and keeps everything moving without stress.

Making It Your Own

The beauty of this recipe is how flexible the toppings become once you nail the crispy rice foundation. I've made versions with spicy salmon, cooked crab, even crispy shrimp, and they all work beautifully on the same rice base. The mayo-based mixture keeps everything bound together, but you can play with the heat level, add wasabi directly to the mixture for a sharper kick, or swap the Sriracha for a different hot sauce if you want to experiment.

  • Leftover spicy tuna mixture keeps for two days refrigerated and is excellent in a simple rice bowl or spread on cucumber slices.
  • If you're making these ahead, fry the rice squares up to two hours before serving and store them in an airtight container, then add the toppings just before guests arrive.
  • A small dish of pickled ginger or extra soy sauce on the side lets people customize the seasoning to their preference without you having to guess.

A close-up of beautifully plated spicy tuna crispy rice with sesame seeds, a delicious appetizer option. Pin it
A close-up of beautifully plated spicy tuna crispy rice with sesame seeds, a delicious appetizer option. | emberthyme.com

These crispy rice bites remind me that some of the best dishes aren't about complexity—they're about respecting each element and putting them together at just the right moment. Every time I make them, someone asks for the recipe, and I love that this little fusion bite brings that kind of joy to a table.

Recipe FAQs

What type of rice is best for the crispy rice base?

Sushi rice is ideal due to its sticky texture, which helps the squares hold together when fried.

How do I get the rice crispy and golden?

Press the cooked rice firmly until chilled, then fry in vegetable oil over medium-high heat until each side is golden and crisp.

Can I use other fish instead of tuna?

Yes, sashimi-grade salmon or cooked crab can be excellent substitutes, offering different flavor profiles.

How is the spicy tuna mixture prepared?

Dice sushi-grade tuna finely and mix with mayonnaise, Sriracha, soy sauce, sesame oil, green onion, and toasted sesame seeds for a creamy, spicy topping.

Are there suggested garnishes for these bites?

Sliced avocado adds creaminess, while black sesame seeds and thin green onion slices provide extra texture and visual appeal.

What are some tips for making these bites ahead of time?

Chilling the pressed rice overnight before frying helps achieve an extra crunchy texture and makes assembly easier.

Spicy Tuna Crispy Rice

Crispy rice squares topped with creamy spicy tuna and avocado, ideal for flavorful appetizers or snacks.

Time to Prep
30 mins
Time to Cook
20 mins
Overall Time
50 mins
By Ember Thyme Clara Henshaw


Skill Level Medium

Cuisine Japanese-American Fusion

Portions 16 Portion Size

Dietary Details No Dairy

What You’ll Need

Crispy Rice

01 1 cup sushi rice
02 1 1/4 cups water
03 2 tablespoons rice vinegar
04 1 tablespoon sugar
05 1/2 teaspoon salt
06 Vegetable oil, for frying

Spicy Tuna

01 6 oz sushi-grade tuna, finely diced
02 2 tablespoons mayonnaise
03 1 tablespoon Sriracha
04 1 teaspoon soy sauce
05 1 teaspoon sesame oil
06 1 teaspoon finely chopped green onion
07 1/2 teaspoon toasted sesame seeds

Topping & Garnish

01 1/2 avocado, sliced or diced
02 1 teaspoon black sesame seeds (optional)
03 Thinly sliced green onion (optional)

How To Make

Step 01

Cook sushi rice: Rinse the sushi rice under cold water until clear. Combine rice and water in a saucepan, bring to boil, reduce heat to low, cover, and cook for 15 minutes. Remove from heat and let rest covered for 10 minutes.

Step 02

Season rice: Mix rice vinegar, sugar, and salt in a small bowl. Microwave for 20 seconds to dissolve. Fold mixture gently into cooked rice and let cool to room temperature.

Step 03

Shape rice slab: Line an 8x8-inch pan with plastic wrap. Press cooled rice evenly into pan to about 3/4 inch thickness. Cover and refrigerate for at least 1 hour to firm up.

Step 04

Prepare spicy tuna: Combine diced tuna, mayonnaise, Sriracha, soy sauce, sesame oil, green onion, and sesame seeds in a bowl. Mix gently and refrigerate until ready to use.

Step 05

Cut rice pieces: Remove rice slab from pan and cut into 16 equal rectangles or squares.

Step 06

Fry rice squares: Heat vegetable oil to 1/2 inch depth in a nonstick skillet over medium-high heat. Fry rice pieces in batches for 2 to 3 minutes per side until golden and crispy. Drain on paper towels and let cool slightly.

Step 07

Assemble bites: Top each crispy rice piece with a spoonful of spicy tuna, add a slice of avocado, and optionally sprinkle with black sesame seeds and green onion. Serve immediately.

Equipment Needed

  • Medium saucepan
  • Mixing bowls
  • 8x8-inch pan
  • Plastic wrap
  • Sharp knife
  • Nonstick skillet
  • Slotted spoon or spatula
  • Paper towels

Allergy Info

Review every ingredient for allergens and talk to your healthcare provider if you’re unsure.
  • Contains fish, egg (in mayonnaise), and soy (in soy sauce).
  • Mayonnaise and soy sauce may contain additional allergens; verify product labels if sensitive.

Nutrition Details (for each portion)

This nutritional info is just for reference—always consult your healthcare provider for specific advice.
  • Calorie Count: 70
  • Fats: 3.5 g
  • Carbohydrates: 7 g
  • Proteins: 3 g