Grilled blackened fish sandwiches are a delightful way to enjoy a flavorful and satisfying meal. The combination of perfectly seasoned fish fillets with fresh lettuce and tomato on a toasted bun makes for a delicious and easy-to-make dish that is perfect for any occasion.
Some ingredients in this recipe, such as tilapia or cod fish fillets, might not be commonly found in every household. When heading to the supermarket, ensure you pick fresh fish fillets from the seafood section. Additionally, cayenne pepper might not be a staple in every pantry, so be sure to grab a small jar if you don't already have it.
Ingredients For Grilled Blackened Fish Sandwiches
Fish fillets: These can be tilapia or cod, providing a mild flavor that pairs well with the spices.
Olive oil: Used to brush the fish fillets, helping the spices adhere and adding a rich flavor.
Paprika: Adds a smoky, sweet flavor and vibrant color to the seasoning mix.
Garlic powder: Provides a savory, aromatic element to the spice blend.
Onion powder: Adds a subtle sweetness and depth to the seasoning.
Dried thyme: Contributes an earthy, slightly minty flavor to the spice mix.
Dried oregano: Offers a robust, slightly bitter taste that complements the other spices.
Cayenne pepper: Adds a spicy kick to the seasoning; adjust to taste.
Sandwich buns: These will hold the fish fillets and toppings, providing a soft and slightly sweet base.
Lettuce: Adds a fresh, crisp texture to the sandwich.
Tomato: Provides juiciness and a slight acidity, balancing the flavors of the sandwich.
Technique Tip for This Recipe
When preparing the fish fillets for grilling, make sure to pat them dry with a paper towel before brushing them with olive oil. This helps the spice mixture adhere better to the surface of the fish, ensuring a more even and flavorful coating. Additionally, to prevent the fish from sticking to the grill, you can lightly oil the grill grates or use a grill basket. This will make it easier to flip the fillets without breaking them apart.
Suggested Side Dishes
Alternative Ingredients
tilapia or cod fish fillets - Substitute with salmon fillets: Salmon provides a rich, flavorful alternative that holds up well to grilling and blackening.
olive oil - Substitute with grapeseed oil: Grapeseed oil has a high smoke point, making it ideal for high-heat cooking like grilling.
paprika - Substitute with smoked paprika: Smoked paprika adds a deeper, smoky flavor that complements the blackening spices.
garlic powder - Substitute with fresh minced garlic: Fresh garlic offers a more intense and aromatic flavor.
onion powder - Substitute with shallot powder: Shallot powder provides a milder, sweeter onion flavor.
dried thyme - Substitute with fresh thyme: Fresh thyme has a more vibrant and aromatic flavor.
dried oregano - Substitute with fresh oregano: Fresh oregano offers a more robust and aromatic flavor.
cayenne pepper - Substitute with chipotle powder: Chipotle powder adds a smoky heat that enhances the blackened seasoning.
sandwich buns - Substitute with ciabatta rolls: Ciabatta rolls provide a sturdier, more textured bread that holds up well to the juicy fish and toppings.
shredded lettuce - Substitute with arugula: Arugula adds a peppery bite that contrasts nicely with the rich, blackened fish.
sliced tomato - Substitute with roasted red peppers: Roasted red peppers add a sweet, smoky flavor that complements the blackened fish.
Other Alternative Recipes Similar to This Dish
How to Store or Freeze This Dish
- Allow the fish fillets to cool completely before storing. This prevents condensation, which can make the fish soggy.
- Wrap each fish fillet individually in plastic wrap or aluminum foil to maintain freshness and prevent them from sticking together.
- Place the wrapped fillets in an airtight container or a resealable plastic bag. Label the container with the date to keep track of freshness.
- Store the fish fillets in the refrigerator if you plan to consume them within 2-3 days. For longer storage, place them in the freezer.
- To freeze, ensure the wrapped fillets are placed in a single layer in the freezer. This helps them freeze quickly and evenly.
- When ready to use, thaw the fish fillets in the refrigerator overnight. Avoid thawing at room temperature to prevent bacterial growth.
- Reheat the fillets by placing them in a preheated oven at 350°F (175°C) for about 10-15 minutes, or until heated through. Alternatively, you can reheat them on a grill or in a skillet over medium heat.
- For the sandwich buns, store them in a bread box or a resealable plastic bag at room temperature for up to 3 days. To freeze, wrap each bun in plastic wrap and place them in a resealable plastic bag. Thaw at room temperature before toasting.
- Keep the shredded lettuce and sliced tomato in separate airtight containers in the refrigerator. Use within 2-3 days for optimal freshness.
- Assemble the sandwiches just before serving to maintain the texture and flavor of each component.
How to Reheat Leftovers
- Preheat your oven to 350°F (175°C). Wrap the fish fillets in aluminum foil to keep them moist and place them on a baking sheet. Heat for about 10-15 minutes or until warmed through.
- For a quicker method, use a microwave. Place the fish fillets on a microwave-safe plate and cover with a damp paper towel. Microwave on medium power for 1-2 minutes, checking frequently to avoid overcooking.
- To reheat the sandwich buns, wrap them in aluminum foil and place them in the oven for the last 5 minutes of reheating the fish fillets. Alternatively, you can toast them in a toaster oven for 2-3 minutes.
- If you prefer a stovetop method, heat a non-stick skillet over medium heat. Add a small amount of olive oil and reheat the fish fillets for about 2-3 minutes on each side.
- For the lettuce and tomato, it’s best to use fresh ingredients. However, if you must reheat them, do so separately in the microwave for about 10-15 seconds to avoid wilting.
Best Tools for This Recipe
Grill: Used to cook the fish fillets, providing a smoky flavor and beautiful grill marks.
Small bowl: Used to mix together the spices for the blackening seasoning.
Brush: Used to apply olive oil to the fish fillets, ensuring they don't stick to the grill and helping the seasoning adhere.
Tongs: Used to flip the fish fillets on the grill, ensuring even cooking on both sides.
Spatula: Helpful for removing the fish fillets from the grill without breaking them apart.
Knife: Used to slice the tomatoes for the sandwich topping.
Cutting board: Provides a safe surface for slicing the tomatoes and preparing other ingredients.
Measuring spoons: Used to measure out the spices and olive oil accurately.
Grill brush: Used to clean the grill grates before and after cooking to ensure a clean cooking surface.
Plate: Used to hold the grilled fish fillets and assembled sandwiches.
Towel: Useful for handling hot tools and cleaning up any spills.
How to Save Time on Making This Recipe
Prepare the spice mix in advance: Mix the paprika, garlic powder, onion powder, thyme, oregano, and cayenne pepper ahead of time and store in an airtight container.
Pre-cut the vegetables: Slice the tomatoes and shred the lettuce in advance to save time during assembly.
Use a grill pan: If you don't have access to an outdoor grill, a grill pan can be used indoors to achieve similar results.
Toast buns together: Toast all sandwich buns simultaneously on the grill to save time.
Batch cook the fish: Grill all fish fillets at once to streamline the cooking process.

Grilled Blackened Fish Sandwiches
Ingredients
Main Ingredients
- 4 fillets Fish fillets such as tilapia or cod
- 2 tablespoon Olive oil
- 1 tablespoon Paprika
- 1 teaspoon Garlic powder
- 1 teaspoon Onion powder
- 1 teaspoon Dried thyme
- 1 teaspoon Dried oregano
- 1 teaspoon Cayenne pepper adjust to taste
- 4 buns Sandwich buns
- 1 cup Lettuce shredded
- 1 cup Tomato sliced
Instructions
- Preheat your grill to medium-high heat.
- In a small bowl, mix together the paprika, garlic powder, onion powder, thyme, oregano, and cayenne pepper.
- Brush the fish fillets with olive oil and coat them with the spice mixture.
- Grill the fish fillets for about 3-4 minutes on each side, or until the fish is cooked through and flakes easily with a fork.
- Toast the sandwich buns on the grill for a minute or two until they are lightly browned.
- Assemble the sandwiches by placing a grilled fish fillet on each bun and topping with shredded lettuce and sliced tomato.
Nutritional Value
Keywords
Suggested Appetizers and Desserts
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