Blackened Tilapia Fish Tacos

Blackened Tilapia Tacos and Radish Slaw

These Blackened Tilapia Tacos are topped with a spicy avocado sour cream sauce and a quick pickled radish slaw! A great fish taco, healthy and flavorful!

The taco game in the Macheesmo home is strong to quite strong. This is known. The truth is that in my house we love damn near any taco. It can be a simple beef and cheese situation or something more complicated. If it’s in a tortilla, there probably won’t be leftovers. These Blackened Tilapia Tacos with Slaw and Avocado Cream Sauce are one of my favorite light tacos. 

I made other fish tacos on Macheesmo before like these grilled white fish tacos which were really good. The difference between those tacos and these blackened tilapia tacos though is, well, black and white. (See what I did there?)

While those tacos are smooth and buttery, these guys will punch you in the face. They are coated in a nice layer of a homemade blackened spice that almost crunches when you bite into it. It’s a new fish taco game, for sure.

What is Blackening Seasoning

I know… it looks like a long list of ingredients for this spice mix, but most of them are pretty basic. If you wanted to you could sub out the spice mix for your favorite Cajun or blackening spice, but it’s not too hard to stir together on your own.

The one tricky spice is smoked salt. This stuff is ridiculously strong and I use it very sparingly. It has a really deep flavor though and a small pinch goes well in a spice mix like this. You can leave it out if you can’t easily find it though. No big deal.

Stir all the ingredients together and add a big pinch of brown sugar. That will sort of caramelize on the fish and give it some good color.

Blackened Tilapia Taco spice mix.
The mix

Lay out your fish and sprinkle them liberally with the spice mix. They should be pretty heavily dusted. Don’t worry about over-seasoning them. Some of the spice mix will fall off as they cook.

Tilapia Seasoned for tacos
A liberal coating.

What fish works best for fish tacos?

Tilapia really is a great choice for these tacos so it’s what I recommend. It flakes really nicely and cooks quickly. That said, any white fish works well for tacos. Something like grouper, cod, or mahi mahi is also a great option. 

If you want a fish taco recipe that has a little more of a meaty texture, salmon is also an option.

Tilapia Tacos Toppings

There are two side dish components to these tacos: a slaw and a sauce. The slaw adds some fantastic crunch to the tacos.

I just used a bunch of radishes, carrots, and some red onions. If you wanted to bulk up this slaw a bit more, you could add some very finely chopped red cabbage.

Radish and carrot slaw for tilapia tacos
Slaw Veg.

I thought it was good like this though. Just run the carrots and radishes through a box grater and slice the onion very thin. Then toss it together with the lime juice and a pinch of salt.

Shredded slaw for fish tacos

It’s best if you can let this sit for a few minutes before serving. The salt will pull out some liquid for the veggies so drain it off before serving. You don’t want a lot of water in your fish tacos.

The avocado cream is the perfect balance to the slaw. It’s smooth and buttery but has a Serrano pepper in it also for a little spicy punch.

If you have a mini food processor, just pulse it up until it’s smooth. You could also just mash up the avocado and stir everything together though.

Avocado cream for fish tacos
Love that color.

Cooking the Tilapia

You can cook this fish is almost any skillet but a cast iron skillet or nonstick skillet would probably be the best. Cook them over medium-high heat with some neutral oil. The fish will cook really quickly once it hits a hot pan. 3-4 minutes per side and you should be in business.

The fish is done when the spice mix is blackened and the fish flakes apart easily.

If you are going to grill the fish, that’s okay. I would recommend using a grill pan or using some foil under the fish to prevent it from falling through the grates.

Cooked blackened tilapia for fish tacos.
Nice color.

You know the rest. Pile this stuff on warm tortillas and garnish with some cilantro and cotija cheese.

A really nice taco twist and seriously can be on the table in under 30 minutes. It’s fast and delicious.

Add these blackened tilapia tacos to your taco menu, people!

Reheating Taco Leftovers

If you have leftovers, these fish tacos store well for a few days. Keep the toppings and ingredients separate and don’t microwave the fish. Reheat it gently in a low-heat skillet with a drizzle of oil for best results.

My Blackened Tilapia Tacos Recipe

Blackened Tilapia Fish Tacos

Blackened Tilapia Tacos

Blackened Tilapia Tacos topped with a spicy avocado sour cream sauce and a quick pickled radish slaw! A great light taco with lots of flavor!
3.29 from 7 votes
Prep Time 15 mins
Cook Time 15 mins
Total Time 30 mins
Course Main Dishes
Cuisine American, Tex-Mex
Servings 4 Servings
Yield 8 tacos


  • 1 ½ pounds tilapia
  • 1 teaspoon paprika
  • 1 teaspoon garlic powder
  • 1 teaspoon dried oregano
  • 1 teaspoon onion powder
  • ½ teaspoon chili powder
  • ½ teaspoon ground cumin
  • ½ teaspoon salt
  • Pinch cayenne pepper
  • Pinch brown sugar
  • Pinch smoked salt optional
  • 2 tablespoons neutral oil
  • 8 small flour tortillas
  • Fresh cilantro garnish
  • Cotija cheese garnish

Radish Slaw:

  • 1 bunch radishes
  • ½ red onion sliced thin
  • 1 large carrot
  • 1 lime
  • 1 teaspoon kosher salt

Avocado Cream:

  • ½ cup sour cream
  • 1 avocado
  • 1 Serrano pepper seeds removed
  • 1 lime


  • Combine paprika, garlic powder, oregano, onion powder, chili powder, cumin, salt, cayenne, and brown sugar in a small bowl. If you happen to have some smoked salt, add a pinch but I don’t think I would buy it JUST for this recipe.
  • Once combined, sprinkle spice mix on both sides of tilapia filets. Use a liberal hand. It should cover most of the fish.
  • Heat a large skillet (cast iron or nonstick) over medium-high heat and add a drizzle of oil. Once the oil is hot, add fish filets and cook for 3-4 minutes per side until the fish is blackened around the edges and flakes apart easily.
  • Keep fish warm until serving.
  • For slaw: Grate radishes and carrots and toss together with sliced onion and lime juice. Season with salt and pepper. It’s best to let the slaw sit for 10-15 minutes if possible. Drain off any liquid before making tacos.
  • For avocado cream: Combine ingredients in a small food processor and pulse until smooth. You can also mash up avocado and stir in ingredients for a slightly chunkier version.
  • Warm tortilla in a 250 degree oven and serve fish in tacos with slaw and cream sauce. Garnish the tacos with fresh cilantro and crumbled cotija cheese.


Serving: 2tacosCalories: 575kcalCarbohydrates: 43gProtein: 42gFat: 28gSaturated Fat: 8gPolyunsaturated Fat: 7gMonounsaturated Fat: 10gTrans Fat: 0.04gCholesterol: 102mgSodium: 1432mgPotassium: 1017mgFiber: 8gSugar: 6gVitamin A: 3163IUVitamin C: 18mgCalcium: 174mgIron: 4mg
Keyword Blackened Recipes, Fish Tacos, Tilapia Recipes

Did you make this?

Instagram logo

Snap a photo and tag @macheesmo so I can see your work.

Here are a few other great taco recipes!

6 Responses to “Blackened Tilapia Tacos and Radish Slaw” Leave a comment

  1. These are the best fish tacos I’ve ever had. I have multiple happy people to back that up. The only thing I changed was omitting avocado from the cream and I added cilantro.

  2. 10 STARS. These were absolutely delicious. I’m sure they would be a million times better with the blackening spices, but I wasn’t able to source them (I live abroad) so I poached the fish. Even so, the slaw and avocado cream knocked these tacos out. of. the. park. Thank you so much for sharing this recipe, Nick. Great job!

Join the Conversation

Your email address will not be published. Required fields are marked *

Recipe Rating