
Bold, smoky, and deeply satisfying, this blackened mahi-mahi is the kind of weeknight dinner that feels like it came from a restaurant kitchen. A homemade spice blend of smoked paprika, garlic, onion, thyme, oregano, and cayenne gets pressed into each fillet before hitting a screaming-hot cast-iron skillet, building that signature dark, crackling crust in just minutes. Avocado oil handles the high heat beautifully, keeping everything grain-free and clean without sacrificing any of the sear. The whole approach is naturally free from tree nuts of any kind — no spice packets with mystery additives, no sauces with hidden ingredients, just whole spices you measure yourself. Mahi-mahi is a firm, meaty fish that holds up perfectly to this aggressive cooking method, staying juicy inside while the outside gets gloriously charred. A squeeze of fresh lime over the top at the end cuts right through the heat and ties everything together. It's a fast, flavor-packed meal that proves eating clean never has to mean eating boring.
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In a small bowl, combine the smoked paprika, garlic powder, onion powder, dried thyme, dried oregano, cayenne pepper, ground black pepper, and kosher salt. Stir until evenly mixed.
Pat the mahi-mahi fillets completely dry with paper towels. Brush both sides of each fillet with 1 tablespoon of the avocado oil, then press the spice blend firmly onto both sides of each fillet, coating evenly.
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