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10-Minute Blackened Tilapia with Avocado Cucumber Salsa

Name: 10-Minute Blackened Tilapia with Avocado Cucumber Salsa
Prep time: 5 min
Cook time: 5 min
Total time: 10 min
Ingredients: 4 tilapia filets; 1/4 cup blackening seasoning; 4 tablespoons butter; 1 large avocado (diced); 1 cucumber (seeded and diced); 1 tablespoon fresh parsley (finely chopped); juice of 1 lemon (plus more lemon wedges for serving); kosher salt (to taste)

Published July 19, 2018. Last updated August 5, 2020 By Elizabeth Lindemann / This post may contain affiliate links.

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5 from 30 votes

This Blackened Tilapia is packed full of spicy Cajun flavor and comes together in LESS THAN 10 MINUTES! Topped with a cool and refreshing avocado cucumber salsa, this is the perfect quick and easy low-carb recipe.

It’s ridiculously fast and easy to make this blackened tilapia. With the help of some very high heat and pre-mixed blackening seasoning, this is a no-fuss recipe that’s perfect for busy weeknights.

Blackening is a Cajun cooking technique that involves coating fish, shrimp, or other protein in a spice mixture, usually consisting of thyme, oregano, chili powder, salt, pepper, garlic, and onion, and cooked over very high heat in butter. The spices become burned (yes, it’s OK to burn your food in this situation), hence the term “blackened.”

For a 100% paleo/whole30 compliant or dairy-free recipe, you can use ghee or olive oil instead of butter. I like using butter because it’s more authentic- the milk solids in the butter also become a bit burnt, enhancing the blackened flavor.

I used a store-bought blackening seasoning for this, but you can easily mix up a homemade version. I was just feeling a bit lazy. There’s just something about having two kids under two makes me want to simplify my cooking even more than usual.

You can also use another seasoning mix with similar flavors in a pinch, such as taco seasoning. Blackening is more about the technique than the specific blend of spices.

The avocado cucumber salsa is a deliciously refreshing accompaniment to the spicy blackened fish. It’s so easy to throw together in a few minutes- just mix some diced avocado, diced cucumber (seeds removed, so it doesn’t get too watered down), parsley, lemon juice, and salt together in a bowl. Done.

The salsa is delicious on it’s own, and it would be great on avocado toast or served with steaks or on chicken tacos.

And the fish could not be easier to make. Here’s how.

First, I recommend using a cast iron skillet for this. You can use another heavy skillet, but cast iron will get intensely hot and, if it’s well-seasoned, provide the perfect non-stick surface for cooking this delicate fish.

(Here’s some info on how to use, season, and care for cast iron skillets– my favorite cookware!)

You’re going to want to get the skillet insanely hot. Like smoking, turn on your oven fan and open a window hot. This will enable the fish to cook extremely fast and develop the burnt, blackened crust without overcooking the inside.

Pat the tilapia filets dry with a paper towel, then coat each in the blackening seasoning, pressing the spices into the fish and covering every speck of surface area.

Then, melt the butter in the hot skillet. Cook the fish for two minutes on each side (yes, only two minutes!), or until fully cooked (you can tell if it’s cooked if it flakes apart easily with a fork). If you have extra thick filets, it may take 2 1/2-3 minutes per side.

I had to cook my tilapia in two batches, so I divided the butter in half for each batch.

You can use this blackened tilapia in tacos, or use the same blackening technique for shrimp, salmon, chicken, catfish, or other proteins.

We had this with Mango Quinoa Salad– a cool, refreshing, sweet salad that pairs perfectly with the blackened fish. It would also be great with this Thai Sesame Red Cabbage and Carrot Salad or this Mediterranean Chickpea Salad.

If you’re looking for other easy fish recipes, you’ll love this Six-Minute Seared Ahi Tuna Steak recipe and this Four-Ingredient Oven-Fried Catfish recipe!

Here’s the recipe!