This bold and flavorful blackened fish sandwich features perfectly seasoned, pan-seared white fish tucked into a sesame seed bun, topped with a cool and creamy cabbage slaw. It’s fresh, zesty, and perfect for a light but satisfying lunch or dinner.

Why You’ll Love This Recipe

This sandwich delivers a beautiful balance of spicy, crispy, creamy, and refreshing elements in every bite. The blackened seasoning gives the fish a smoky, slightly charred crust, while the creamy slaw adds crunch and coolness. It’s easy to make, customizable, and a great alternative to fried fish sandwiches. Whether you’re serving it for a quick weeknight meal or a casual weekend lunch, it’s sure to please.

ingredients

(Tip: You can find the complete list of ingredients and their measurements in the recipe card below.)

2 fillets white fish (cod, tilapia, or haddock)
1 tablespoon olive oil
1 teaspoon paprika
1/2 teaspoon garlic powder
1/2 teaspoon onion powder
1/2 teaspoon dried thyme
1/4 teaspoon cayenne pepper
Salt and pepper to taste
2 sesame seed burger buns
Fresh cilantro (optional)

For the Slaw:

1 cup shredded cabbage
1/4 cup shredded carrots
2 tablespoons mayonnaise
1 teaspoon apple cider vinegar
Salt and pepper to taste

directions

In a small bowl, mix together paprika, garlic powder, onion powder, thyme, cayenne pepper, salt, and pepper.
Rub the spice mixture evenly over both sides of the fish fillets.
Heat olive oil in a skillet over medium-high heat. Add the fish fillets and cook for 3–4 minutes per side, or until the fish is opaque and has a dark, blackened crust.
In a separate bowl, combine the shredded cabbage, shredded carrots, mayonnaise, apple cider vinegar, salt, and pepper. Mix well and chill until ready to use.
Lightly toast the burger buns, if desired.
Place each cooked fish fillet on the bottom half of a bun.
Top with a generous portion of the creamy slaw and fresh cilantro, if using.
Cover with the top bun and serve immediately.

Servings and timing

This recipe makes 2 servings. Preparation and cooking time is approximately 20–25 minutes.

Variations

Different fish: Try mahi-mahi, catfish, or salmon for a richer flavor.
Make it spicy: Add extra cayenne or hot sauce to the slaw for added heat.
Slaw alternatives: Use Greek yogurt in place of mayonnaise or add thinly sliced jalapeños for a kick.
Low-carb option: Serve the blackened fish and slaw in lettuce wraps instead of buns.
Topping ideas: Add pickles, avocado slices, or a squeeze of lime juice for extra flavor.

storage/reheating

The components are best stored separately. Keep leftover fish in an airtight container in the refrigerator for up to 2 days. Reheat gently in a skillet over low heat or in the oven at 300°F (150°C) until warmed through. The slaw should be stored in the refrigerator and used within 1–2 days for optimal freshness. Assembled sandwiches are best enjoyed fresh.

FAQs

Can I grill the fish instead of pan-searing?

Yes, grilling works well. Use a grill-safe fish basket or foil to prevent sticking.

Is this recipe gluten-free?

Use gluten-free buns or serve in lettuce wraps to make it gluten-free. Always check seasoning labels.

Can I use frozen fish?

Yes, just ensure it’s fully thawed and patted dry before seasoning and cooking.

What type of cabbage is best for the slaw?

Green or purple cabbage both work. You can also use a pre-shredded coleslaw mix for convenience.

How do I keep the fish from falling apart?

Handle it gently while cooking and flipping. A fish spatula or wide turner helps maintain its shape.

Can I bake the fish instead?

Yes, bake at 400°F (200°C) for about 10–12 minutes or until cooked through, though it may lack the blackened crust.

What can I use instead of mayonnaise?

Try Greek yogurt, vegan mayo, or a tahini-based dressing for a different flavor and lighter texture.

Can I make the slaw ahead of time?

Yes, but it’s best consumed within 24 hours to maintain its crispness.

Are there other bun options?

Use brioche, whole wheat, or ciabatta rolls based on preference. For a lighter option, go bun-less or use lettuce wraps.

What sides go well with this sandwich?

Try sweet potato fries, a cucumber salad, or roasted vegetables for a complete meal.

Conclusion

The blackened fish sandwich with creamy slaw is a flavorful and satisfying meal that comes together quickly with bold spices and fresh ingredients. Whether you’re craving something hearty yet light or need an easy dinner option, this recipe delivers every time. Serve it with your favorite sides, and enjoy a delicious, restaurant-quality sandwich from your own kitchen.