Cajun Blackened Salmon Mango

Sizzling Cajun blackened salmon fillets with a crispy crust, topped with vibrant mango salsa on a white plate. Save to Pinterest
Sizzling Cajun blackened salmon fillets with a crispy crust, topped with vibrant mango salsa on a white plate. | hearthlykitchen.com

This dish features salmon fillets coated with a spicy Cajun seasoning and pan-seared to form a crispy crust. A refreshing mango salsa with red onion, bell pepper, jalapeño, cilantro, and lime juice complements the rich, bold flavors of the blackened fish. Quick to prepare and cook, it offers a perfect balance of heat and sweetness, ideal for a flavorful main course with an American Cajun-inspired touch.

The first time I made blackened salmon, my smoke alarm went off twice. My husband opened every window in the apartment while I stood there with a cast-iron skillet, watching the most gorgeous dark crust form on each fillet. That dinner taught me that great cooking sometimes comes with a little drama and a lot of deliciousness.

Last summer, I served this at a small dinner party and watched my normally spice-averse friend go back for seconds. She said something about how the mango cooled everything down just right. Now it is my go-to when I want to impress without spending all day at the stove.

Ingredients

  • 4 salmon fillets: Skin-on helps protect the fish during high-heat cooking, but skinless works too
  • 1 tablespoon olive oil: Helps the seasoning stick and creates that beautiful crust
  • 2 tablespoons Cajun seasoning: This is the flavor engine of the whole dish, do not be shy with it
  • 1/2 teaspoon salt and pepper: Only needed if your Cajun blend is unsalted
  • 1 large ripe mango: Look for one that gives slightly to pressure but is not mushy
  • 1/2 small red onion: Adds sharp bite that cuts through the rich salmon
  • 1 small red bell pepper: Brings crunch and sweetness to balance the heat
  • 1 jalapeño: Keep the seeds if you want extra fire, remove for mild
  • 2 tablespoons fresh cilantro: Brightens everything up with its herbal freshness
  • Juice of 1 lime: The acid that makes the salsa sing and tenderizes the mango

Instructions

Mix up the mango salsa first:
Toss mango, onion, bell pepper, jalapeño, cilantro, and lime juice in a bowl. Season with salt and pepper, then stash it in the fridge to let flavors meld while you cook the fish.
Get your salmon ready:
Pat each fillet completely dry with paper towels. Brush both sides with olive oil so the seasoning has something to grab onto.
Coat with Cajun magic:
Mix your Cajun seasoning with salt and pepper, then press it generously onto both sides of each fillet. Really get it in there for that crust.
Heat things up:
Get your cast-iron skillet screaming hot over medium-high heat. You want it hot enough that a drop of water sizzles away instantly.
Sear to perfection:
Lay in the salmon skin-side down and do not touch it for 3 to 4 minutes. You want that dark crust to form undisturbed.
Flip and finish:
Carefully turn each fillet and cook another 2 to 4 minutes until the salmon reaches your preferred doneness. Let it rest 2 minutes before serving.
Pile it on:
Spoon that chilled mango salsa generously over each hot fillet. Watch the steam rise and dig in.
Cajun blackened salmon hot from the skillet, garnished with fresh mango salsa, red onion, and cilantro. Save to Pinterest
Cajun blackened salmon hot from the skillet, garnished with fresh mango salsa, red onion, and cilantro. | hearthlykitchen.com

This recipe became my anniversary dinner tradition after the first year of marriage. Something about the contrast of fiery hot fish and cool bright salsa felt like a metaphor I could get behind.

Getting That Restaurant Quality Crust

The secret is letting your pan get properly hot before the salmon goes in. I used to rush this step and wonder why my seasoning slid off. Now I heat the skillet for a full 5 minutes and the difference is night and day.

Making It Ahead

The salsa actually tastes better after sitting for an hour or two. I often make it in the afternoon while the kids are at school, giving the lime time to work its magic on all those diced vegetables.

Serving Ideas That Work

Keep it simple with steamed rice and maybe some sautéed greens. The salmon is the star here and everything else should play supporting role.

  • Cauliflower rice works beautifully if you are watching carbs
  • Warm corn tortillas turn this into incredible fish tacos
  • A crisp arugula salad with extra lime dressing rounds out the meal
Close-up of Cajun blackened salmon, its spice-crusted surface contrasted by sweet mango salsa with jalapeños. Save to Pinterest
Close-up of Cajun blackened salmon, its spice-crusted surface contrasted by sweet mango salsa with jalapeños. | hearthlykitchen.com

Hope this brings a little spice to your table and maybe some excitement to your weeknight routine. Enjoy every bite.

Cajun Blackened Salmon Mango

Salmon coated in Cajun spices served with fresh mango salsa for a bold, vibrant flavor combination.

Prep 20m
Cook 10m
Total 30m
Servings 4
Difficulty Medium

Ingredients

For the Salmon

  • 4 salmon fillets (about 6 oz each), skin-on or skinless
  • 1 tablespoon olive oil
  • 2 tablespoons Cajun seasoning
  • 1/2 teaspoon salt (if Cajun seasoning is unsalted)
  • 1/2 teaspoon freshly ground black pepper

For the Mango Salsa

  • 1 large ripe mango, peeled, pitted, and diced
  • 1/2 small red onion, finely diced
  • 1 small red bell pepper, diced
  • 1 jalapeño, seeded and finely chopped
  • 2 tablespoons fresh cilantro, chopped
  • Juice of 1 lime
  • Salt and pepper, to taste

Instructions

1
Prepare the Mango Salsa: In a medium bowl, combine mango, red onion, red bell pepper, jalapeño, cilantro, and lime juice. Season with salt and pepper to taste. Mix gently, cover, and refrigerate until ready to serve.
2
Prepare the Salmon: Pat the salmon fillets dry with paper towels. Brush both sides with olive oil.
3
Season the Salmon: In a small bowl, mix Cajun seasoning, salt, and black pepper. Generously coat both sides of each salmon fillet with the seasoning.
4
Heat the Pan: Heat a large cast-iron skillet or heavy-bottomed pan over medium-high heat until very hot.
5
Sear the Salmon: Place the salmon fillets in the skillet, skin-side down if applicable. Cook for 3–4 minutes without moving, until a dark crust forms.
6
Finish Cooking: Carefully flip the fillets and cook for another 2–4 minutes, until the salmon is cooked to your desired doneness (internal temperature should reach 145°F).
7
Rest and Serve: Remove the salmon from the pan and let rest for 2 minutes. Serve each salmon fillet topped generously with mango salsa.
Additional Information

Equipment Needed

  • Chef's knife
  • Cutting board
  • Mixing bowl
  • Cast-iron skillet or heavy frying pan
  • Spatula
  • Paper towels

Nutrition (Per Serving)

Calories 330
Protein 35g
Carbs 16g
Fat 14g

Allergy Information

  • Contains fish (salmon)
  • Always check Cajun seasoning ingredients for possible allergens
Grace Ellington

Home cook sharing easy recipes, kitchen tips, and meal ideas everyone can enjoy.