Blackened Tilapia with Onion Relish

Prep Time
Cook Time
Ready In

Recipe: #33892

December 09, 2019

"Seasoned with Cajun spices and paired with a luscious mound of caramelized onion relish will delight those that eat it with each marvelous mouthful."

Original is 4 servings


  • Serving Size: 1 (347.1 g)
  • Calories 526.9
  • Total Fat - 33.3 g
  • Saturated Fat - 10.5 g
  • Cholesterol - 98.5 mg
  • Sodium - 237.8 mg
  • Total Carbohydrate - 22.9 g
  • Dietary Fiber - 2.5 g
  • Sugars - 14.3 g
  • Protein - 34.1 g
  • Calcium - 136.2 mg
  • Iron - 3.2 mg
  • Vitamin C - 9.9 mg
  • Thiamin - 0.3 mg

Step by Step Method

Step 1

Rinse the fillets of fish and pat dry. Set aside.

Step 2

Combine the basil, lemon pepper, and Cajun seasoning in a bowl/plate large enough to dredge the fillets.

Step 3

Brush each fillet with melted butter and dredge in the Cajun seasoning mixture.

Step 4

Heat a large skillet over medium-high to high heat (the level of heat all depends on the thickness of your fish, as you don't want to "blacken" too soon while your fish might still be raw in the middle). Add the oil and wait until hot. Cook the fillets for 2 minutes or so on each side, seasoning lightly with salt. You will probably have to cook the fish in at least 2 batches, so keep the first batch warm as you cook the second.

Step 5

Top each fillet with equal portions of onion relish. Serve and enjoy!

Red Onion Relish

Step 6

Cut the onions in half, vertically, removing the papery outer layers. With the cut sides down, slice the onions as thinly as possible.

Step 7

Place the oil in a medium skillet over medium heat and add the onions; season with salt and pepper Add the brown sugar and 1 tablespoon of the balsamic vinegar, stirring every few minutes.

Step 8

As the mixture begins to turn a light golden brown, the moisture will begin to evaporate. Add the remaining vinegar 1 tablespoon at a time, as needed.

Step 9

After 15 minutes, lower the heat to medium-low ad continue cooking for about 35 minutes. The longer the onions cook, the more you will need to stir them. The onions should be a deep, rich brown. Taste and adjust the seasoning of necessary.

Step 10

This onion relish can be made ahead, up to a week and then reheated.


No special items needed.

1 Reviews


Great fish which we enjoyed! And so easy too! We served the fish with baked sweet potatoes and tossed salad -- easy meal! Thanks for sharing!


review by:
(29 Feb 2020)

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