Blackened Cod with Avocado and Corn Salsa Recipe

When the weather warms up I try to avoid heating the oven, so I rely on fast, stovetop dinners that come together in 20 minutes or less. This blackened cod with avocado corn salsa fits that goal perfectly: it cooks quickly, offers bold flavors from a smoky spice blend, and is brightened by a fresh, citrusy salsa. It’s naturally gluten-free and dairy-free, making it a great option for many dietary needs.

Why You’ll Love This Recipe

• Fast and simple: Ready in under 20 minutes from start to finish.
• Stovetop cooking: No oven or grill required—just a skillet and a little time.
• Diet-friendly: Naturally gluten-free and dairy-free without special substitutions.

An Avocado Corn Salsa You’ll Want to Put on Everything

I’m a big fan of avocado—soaking it into a simple corn salsa is one of my favorite quick toppings. This salsa combines sweet corn with creamy avocado, bright lime juice, crunchy red onion, juicy tomato, and fresh cilantro. It takes about five minutes to assemble and adds a lively contrast to the warm, spiced fish.

The corn can be fresh, frozen, or canned (drained and rinsed). Dice the avocado last and gently fold it into the mix so it keeps its texture. Use this salsa to top fish, chicken, tacos, grain bowls, or even roasted vegetables.

How to Make the Blackening Seasoning

Blackening seasoning is a blend of pantry spices: paprika, chili powder, garlic and onion powders, dried oregano, black pepper, kosher salt, and a pinch of cayenne for heat. Combine the dry spices and stir in a little oil to make a paste that will cling to the cod and help form a crisp, flavorful crust when seared.

Make a larger batch of the dry spice mixture and store it in an airtight jar for quick weeknight meals. If you prefer a milder flavor, leave out the cayenne or add a touch of brown sugar to balance the heat.

Ingredient Notes

• Cod filets: Choose 6-ounce filets that are similar in thickness so they cook evenly. Fresh or previously frozen cod both work well.
• Blackening spices: Make a larger batch and store it in an airtight container for up to six months.
• Avocado oil: Neutral oils like avocado or olive oil help the spices coat the fish and encourage browning in the skillet.
• Corn: Fresh or frozen corn is ideal; canned corn is fine if drained and rinsed.
• Avocado: Use ripe but firm avocados that yield slightly to gentle pressure—too soft will become mushy, too firm will be difficult to dice.
• Lime juice: Fresh-squeezed lime adds brightness; one lime yields roughly one tablespoon of juice.

Make Extra Blackening Spice

Quadruple the spice mix when you make it and keep it in a sealed jar. It’s great on other seafood, chicken, or vegetables and saves time for future meals.

How to Tell When Cod Is Cooked on the Stovetop

Seafood cooks quickly and is easy to overcook, so watch it closely. You can verify doneness in several reliable ways:

• Use a thermometer: Cook cod to an internal temperature of 145°F (63°C) at the thickest part.
• Visual cue: Cooked fish turns opaque rather than translucent.
• Fork test: The flesh should flake easily when prodded gently at a 45-degree angle with a fork.

Frequently Asked Questions

Is blackened cod spicy?

There’s a mild kick from the cayenne, but the avocado corn salsa cools and balances the heat. Omit the cayenne for a milder dish.

Can I use a different fish?

Yes. This blackening blend works well on mahi mahi, tilapia, salmon, or halibut. Adjust cooking time for thicker or thinner fillets.

Can I make the salsa ahead of time?

The salsa is best fresh. You can prep the vegetables a few hours ahead and add the avocado just before serving to avoid browning.

Expert Tips

• Pat the cod dry before seasoning so the spice paste adheres and the fish sears properly.
• Don’t overcrowd the skillet—cook in batches if needed to ensure good browning.
• Let the fish cook undisturbed for 3–4 minutes per side to develop a crust, then flip once to finish.

Storage

Keep leftover cooked cod in an airtight container in the refrigerator for 1–2 days and reheat gently in a skillet over low heat to avoid drying. Store the avocado corn salsa separately for up to one day; the avocado may darken slightly but will still be fine to eat.

Serving Suggestions

Serve the blackened cod over white rice, quinoa, or a simple salad. The avocado corn salsa also pairs well with grilled chicken, tacos, or as a bright topping for roasted vegetables. For a different flavor profile, swap the salsa for a mango salsa or a simple pico de gallo.

Recipe: Blackened Cod with Avocado Corn Salsa

Ingredients

For the Cod:

• 1 teaspoon paprika
• 1 teaspoon chili powder
• 1 teaspoon garlic powder
• 1/2 teaspoon kosher salt
• 1/2 teaspoon ground black pepper
• 1/2 teaspoon dried oregano
• 1/2 teaspoon onion powder
• 1/4 teaspoon ground cayenne pepper (optional)
• 1 tablespoon avocado or olive oil
• 4 (6-ounce) cod filets

For the Avocado Corn Salsa:

• 1 cup corn (fresh, frozen, or drained canned)
• 1 avocado, diced
• 1 tomato, diced
• 1/4 cup red onion, diced
• 2 tablespoons chopped cilantro
• 1 tablespoon fresh lime juice (about 1 lime)
• 1/4 teaspoon kosher salt, or to taste

Instructions

1. Preheat a large skillet over medium heat.
2. In a small bowl, combine the paprika, chili powder, garlic powder, kosher salt, black pepper, oregano, onion powder, and cayenne. Stir in the oil to form a thin paste.
3. Pat the cod filets dry with paper towels. Brush both sides of each filet generously with the spice and oil mixture.
4. Add the filets to the preheated skillet. Cook undisturbed for 3–4 minutes on the first side, then flip and cook another 3–4 minutes until the fish reaches 145°F (if using a thermometer), the flesh is opaque, and it flakes easily with a fork.
5. While the fish cooks, combine the corn, diced avocado, tomato, red onion, cilantro, lime juice, and salt in a bowl. Gently toss and taste, adjusting lime or salt as needed.
6. Transfer the cooked cod to plates and spoon the avocado corn salsa over each filet. Serve immediately.

Notes

• Gluten-free: This recipe is naturally gluten-free.
• Milder version: Omit cayenne or add 1/2 teaspoon brown sugar to the spice blend to mellow the heat.
• Other fish: The seasoning adapts well to other firm white fish; adjust cook time based on thickness.
• Storage: Refrigerate leftover cod for 1–2 days; reheat gently. Keep salsa separate for up to one day.

Nutrition (approximate per serving)

Calories: 306 kcal | Carbohydrates: 16 g | Protein: 33 g | Fat: 12 g | Fiber: 5 g