Start by setting your air fryer to 400°F and let it preheat for about 3-5 minutes. This is crucial—a properly preheated air fryer ensures even cooking and that desirable golden crust from the moment the fish touches the basket. While the air fryer heats, pat your haddock fillets dry with paper towels. This is non-negotiable. Moisture is the enemy of crispiness. Take your time here—the drier your fish, the better the crust will adhere and brown. If your fillets are particularly thick (over 1 inch), lay them on a clean kitchen towel for a minute to let any excess moisture absorb.

In a medium bowl, combine the panko breadcrumbs, grated Parmesan, dried dill, dried parsley, garlic powder, smoked paprika, salt, and freshly ground black pepper. Stir everything together with a fork or small whisk until the seasonings are evenly distributed throughout the breadcrumbs. You want no clumps of cheese, no concentrated pockets of herbs—uniformity is your goal here. This is where you can customize. If you love lemon, add a teaspoon of lemon zest. If you prefer heat, add a pinch of cayenne pepper. The beauty of this mixture is its flexibility, but start with my proportions if you're new to seasoning fish.

Lightly brush each haddock fillet on both sides with mayonnaise—about 1 to 1.5 teaspoons per side, depending on the fillet's size. Mayonnaise might seem like an odd choice, but it serves a critical purpose: it acts as an adhesive that helps the breadcrumb mixture stick to the fish during cooking. It also contributes to browning through its oil and egg content. Use a pastry brush or even your fingers (clean hands work beautifully here). Spread the mayonnaise in a thin, even layer. You're not trying to coat it thickly—just enough to bind the crumbs. This step is where many home cooks stumble. Don't skip it, and don't overdo it.

Now for the satisfying part: dip each mayonnaise-coated fillet into your seasoning mixture, pressing gently with your fingers or the back of a spoon to ensure the breadcrumbs adhere. You're essentially pressing the mixture into the fish rather than just patting it on. Rotate the fillet as you work, making sure all sides—including the edges—are well-coated. If you have any remaining breadcrumb mixture, sprinkle it directly onto the fillets. You want a visible, even coating that's about the thickness of a pencil eraser. This is what will become your crispy, golden exterior.

Place your coated fillets on a plate or small tray, and use a pastry brush or the back of a spoon to lightly drizzle or brush a tiny amount of extra-virgin olive oil over each one (about ¼ to ½ teaspoon per fillet). This oil is essential for achieving that deep golden-brown crust. It helps the breadcrumbs crisp and brown beautifully in the air fryer's dry heat environment. Don't skip this step thinking you'll save calories—the amount is minimal, and it transforms the texture of the crust. Trust me on this one.

Carefully arrange the haddock fillets in your air fryer basket in a single layer. They should not touch or overlap—air circulation is what makes air frying work. If your fillets are large or your air fryer is small, you may need to cook them in two batches. Never crowd the basket, or you'll end up with uneven cooking and soggy bottoms. Cook at 400°F for 10 to 12 minutes, depending on the thickness of your fillets. At the 10-minute mark, carefully open the basket and check the fish. The coating should be golden brown, and the fish should flake easily when tested with a fork. If your fillets are particularly thin (under ½ inch), start checking at 8 minutes. If they're thicker, they may need the full 12 minutes. You'll know it's done when the flesh is opaque throughout, and a fork easily separates the delicate flakes. The exterior should have that satisfying crunch you're after.

Transfer your air-fried haddock to serving plates immediately—don't let it sit in the warm basket, or it will continue to cook and may dry out slightly. Serve hot alongside fresh lemon wedges so each person can add brightness to their fish. A squeeze of fresh lemon not only enhances the delicate flavor of the haddock but also aids in digestion and adds that coastal freshness I grew up with.