If you’re anything like me and adore bold, fresh flavors with a healthy twist, then you need to try this Spicy Tuna Bowls with Cauliflower Rice Recipe. It’s a vibrant, satisfying meal that marries creamy, spicy tuna with the light, fluffy goodness of cauliflower rice, making it a perfect quick low-carb option. Each bite bursts with a fantastic blend of textures and flavors that feels indulgent yet nourishing, and it’s so simple to put together that it quickly becomes one of your favorite go-to dishes.

Ingredients You’ll Need
This recipe relies on simple, wholesome ingredients that each play an essential role in crafting those irresistible flavors and textures. From the mild cauliflower rice acting as a healthy base, to the spicy, creamy tuna mix, every component adds color and character to the bowl.
- 3 cups cauliflower rice: The low-carb, fluffy foundation that soaks up every bit of flavor.
- 1 tbsp seasoned rice vinegar: Adds a subtle tang that brightens the cauliflower rice.
- 3 (5 oz) cans of tuna, drained: Quick, protein-packed goodness that balances the spice perfectly.
- 1 Persian cucumber, thinly sliced: Provides a cool crunch for texture contrast.
- 1/2 tbsp toasted black sesame seeds: Adds a nutty aroma and a hint of earthiness.
- 1/2 tbsp toasted white sesame seeds: A beautiful, nutty garnish to compliment the black sesame.
- 2 green scallions, thinly sliced: Gives a fresh, sharp finish that lifts the whole dish.
- 3/4 cup mayonnaise: Creamy base for the spicy sauce that coats the tuna.
- 1 1/2 tbsp sriracha sauce: Brings the heat and exciting spice that wakes up your taste buds.
- 1 tsp toasted sesame oil: A little drizzle of this deepens the flavor with an irresistible toasted note.
How to Make Spicy Tuna Bowls with Cauliflower Rice Recipe
Step 1: Prepare the Cauliflower Rice
Start by steaming your cauliflower rice until it’s tender but still light and fluffy. While it’s hot, drizzle seasoned rice vinegar over it and gently mix. This step adds a subtle tang that balances perfectly against the richness of the spicy tuna. Taste and adjust the vinegar to your liking — it’s all about finding the right zing for your bowl.
Step 2: Portion the Cauliflower Rice
Divide the prepared cauliflower rice evenly into three meal prep containers. These bowls form the wholesome, low-carb base of your vibrant meal, ready to be topped with the delicious tuna mixture.
Step 3: Make the Spicy Mayo Sauce
In a bowl, whisk together mayonnaise, sriracha sauce, and toasted sesame oil. This combination creates a creamy, spicy, and richly toasted sauce that gives the tuna its signature kick. Mix well until silky and smooth.
Step 4: Coat the Tuna in Spicy Mayo
Add the drained tuna to the spicy mayo mixture, stirring gently to make sure every bite is evenly coated with that luscious sauce. This melds the flavors beautifully and ensures each spoonful delivers that perfect balance of heat and creaminess.
Step 5: Assemble the Bowls
Distribute the spicy tuna evenly over the cauliflower rice in each container. This layering keeps the textures distinct so you get a delightful mix of fluffy rice and creamy tuna in every mouthful.
Step 6: Add Fresh Cucumbers
Lay the thinly sliced Persian cucumbers alongside the tuna and rice for a crunchy, refreshing contrast. Their crisp bite and coolness are such a welcome texture and flavor pairing with the spicy tuna.
Step 7: Sprinkle Sesame Seeds
Top your bowls by sprinkling both black and white toasted sesame seeds. They not only add a beautiful visual contrast but also enhance the nutty aroma, making every bite even more delightful.
Step 8: Garnish with Scallions
Finish by scattering thinly sliced green scallions over the tuna. Their fresh, slightly sharp flavor lifts the entire dish, adding a bright note that rounds out the deep, spicy, and toasted flavors.
Step 9: Chill and Store
These Spicy Tuna Bowls with Cauliflower Rice Recipe bowls keep beautifully in the refrigerator for up to three days. Serve them chilled or at room temperature to enjoy the perfect meal, whether prepping ahead for lunches or quick dinners.
How to Serve Spicy Tuna Bowls with Cauliflower Rice Recipe
Garnishes
Beyond sesame seeds and scallions, a few extras can elevate these bowls even more. Try adding a sprinkle of crushed nori flakes, a few slices of ripe avocado for creaminess, or a wedge of lime for a fresh citrus burst that enhances the spicy flavors.
Side Dishes
These bowls are wonderfully satisfying on their own, but if you want to turn them into a fuller meal, consider serving with a light seaweed salad or some pickled ginger. Both add interesting contrasts that complement the flavors without overpowering the bowls.
Creative Ways to Present
For a fun twist, serve your Spicy Tuna Bowls with Cauliflower Rice Recipe in hollowed-out avocado halves or inside cucumber boats. Not only does this look impressive, but it also adds layers of fresh flavor and texture, making your meal feel like a special occasion.
Make Ahead and Storage
Storing Leftovers
Store leftover bowls in airtight containers in the fridge for up to three days. Keeping the crunchy cucumber separate until just before serving helps maintain its crisp texture, so your bowls stay fresh and delicious.
Freezing
This dish is best enjoyed fresh or refrigerated, as freezing causes the cauliflower rice and cucumber to lose their texture. For meal prep, freeze the tuna mixture alone if needed, then combine with freshly prepared cauliflower rice and cucumbers when ready to eat.
Reheating
If you prefer a warm bowl, gently microwave the cauliflower rice and tuna mixture together until heated through, but skip reheating the cucumbers to preserve their crunch. Alternatively, enjoy the bowl chilled for a refreshing, crisp taste experience.
FAQs
Can I use fresh tuna instead of canned in this Spicy Tuna Bowls with Cauliflower Rice Recipe?
Absolutely! Fresh tuna works wonderfully, especially if you dice it finely or lightly sear it before mixing with the spicy mayo. It adds a clean, fresh flavor, but canned tuna keeps it quick and convenient without sacrificing taste.
Is this recipe gluten-free?
Yes, this Spicy Tuna Bowls with Cauliflower Rice Recipe is naturally gluten-free as long as you use gluten-free sriracha and seasoned rice vinegar. It’s a fantastic option for gluten-conscious eaters looking for something vibrant and satisfying.
How spicy is the dish, and can I adjust the heat level?
The sriracha gives it a moderate spicy kick that can easily be adjusted. If you like it milder, use less sriracha, or for extra heat, add more or a pinch of cayenne pepper. It’s very flexible to suit your heat preference.
Can I substitute cauliflower rice with regular rice?
Of course! While cauliflower rice keeps this recipe low-carb, using regular white or brown rice works beautifully too. Just note that it changes the nutrition profile and texture, but the flavors will remain just as delicious.
What’s the best way to eat these bowls – hot or cold?
This recipe shines both ways. Many enjoy it chilled straight from the fridge for a refreshing, light meal, but warming it gently can also be comforting. It’s all about your mood and preference!
Final Thoughts
I can’t recommend this Spicy Tuna Bowls with Cauliflower Rice Recipe enough for anyone craving a healthy, tasty, and fuss-free meal. It’s packed with flavor, texture, and color — plus it’s super easy to customize and prep ahead. Give it a try soon and watch it earn a permanent spot on your recipe roster; these bowls are just that good!
Print
Spicy Tuna Bowls with Cauliflower Rice Recipe
- Prep Time: 15 minutes
- Cook Time: 5 minutes
- Total Time: 20 minutes
- Yield: 3 bowls
- Category: Lunch
- Method: Steaming
- Cuisine: Fusion
- Diet: Low Carb
Description
This Spicy Tuna Bowls with Cauliflower Rice recipe is a quick and low-carb meal perfect for a healthy lunch or dinner. Featuring tender cauliflower rice seasoned with rice vinegar, spicy tuna mixed with a creamy sriracha mayo, and fresh cucumber slices topped with toasted sesame seeds and scallions, this dish combines vibrant flavors and textures for a satisfying, nutritious bowl that you can prepare in just 20 minutes.
Ingredients
Cauliflower Rice
- 3 cups cauliflower rice
- 1 tbsp seasoned rice vinegar
Tuna Mixture
- 3 (5 oz) cans of tuna, drained
- 3/4 cup mayonnaise
- 1 1/2 tbsp sriracha sauce
- 1 tsp toasted sesame oil
Garnishes
- 1 persian cucumber, thinly sliced
- 1/2 tbsp toasted black sesame seeds
- 1/2 tbsp toasted white sesame seeds
- 2 green scallions, thinly sliced
Instructions
- Steam Cauliflower Rice: Steam the cauliflower rice until it becomes tender. While still hot, drizzle with seasoned rice vinegar and mix thoroughly to combine. Taste and add more vinegar if desired to balance the flavor.
- Portion Cauliflower Rice: Divide the cauliflower rice evenly by adding 1 cup to each of the three meal prep containers to serve as the base for the bowls.
- Mix Spicy Mayo: In a separate bowl, whisk together the mayonnaise, sriracha sauce, and toasted sesame oil until the mixture is smooth and well blended, creating a spicy and flavorful mayo sauce.
- Add Tuna to Sauce: Stir the drained tuna into the spicy mayo mixture, ensuring each piece of tuna is evenly coated with the sauce for maximum flavor.
- Assemble Bowls with Tuna: Divide the spicy tuna mixture evenly between the three containers on top of the cauliflower rice.
- Add Fresh Cucumber: Add the thinly sliced cucumber alongside the tuna and cauliflower rice in each container for a refreshing crunch and contrast in texture.
- sprinkle Sesame Seeds: Sprinkle both toasted black and white sesame seeds evenly over the rice and cucumber to add a nutty flavor and crunchy texture.
- Garnish with Scallions: Top each tuna bowl with the thinly sliced green scallions to add a mild oniony aroma and brightness to the dish.
- Store the Bowls: Seal the containers and store them in the refrigerator for up to 3 days. Serve chilled or allow to come to room temperature before eating for best flavor.
Notes
- Cauliflower rice can be steamed using a steamer basket on the stovetop or microwaved for convenience.
- Adjust the amount of sriracha to make the dish milder or spicier to suit your taste.
- Use canned tuna packed in water or oil depending on preference; drain well to avoid soggy bowls.
- This dish is excellent for meal prep and stays fresh in the fridge for 3 days.
- Feel free to add avocado slices or a soft-boiled egg for extra protein and creaminess.

