Crispy Grilled Rockfish with Lemon Herb Marinade

I worked as a fishing guide at a lodge in Alaska for several years, and one of my favorite fish to catch and cook was rockfish. Its firm white flesh holds up well on the grill and absorbs bold flavors, which makes this lemon-dill grilled rockfish one of my go-to recipes. If you don’t have rockfish available, you can substitute similar firm-fleshed fish such as walleye, catfish, halibut, or striped bass.

How to Prepare for This Grilled Rockfish Recipe

For this recipe plan on about one pound of rockfish fillets (skin removed). If your fillets were frozen, make sure they are completely thawed before you start. The technique is simple: the prep takes roughly 15 minutes and the cook time about 15 minutes, so you can have a flavorful weeknight meal on the table in around 30 minutes.

Preheat your grill or smoker to 425°F. I like using pecan wood pellets for a mild, nutty smoke, but this recipe works great on a charcoal or gas grill as well. Line a baking sheet with parchment paper and arrange the fillets on the sheet. I often cut larger fillets in half so the portions are easier to serve.

Mix the sauce in a small bowl:

• ¼ cup mayonnaise
• ¼ cup sour cream
• Zest of one lemon
• 1 clove garlic, minced
• 1 tbsp fresh dill, chopped
• 2 tbsp paprika-based BBQ rub (a pork & poultry rub works well)
• Juice of one lemon

Spread a thin layer of this sauce over each fillet. The sauce adds flavor and helps keep the fish moist during cooking.

Prepare the breadcrumb topping in another bowl:

• ½ cup breadcrumbs
• 1 tbsp fresh dill, chopped
• Lemon zest
• ½ tbsp BBQ rub

Sprinkle the breadcrumb mixture evenly over the sauced fillets to create a flavorful crust that finishes nicely on the grill.

Grilling Rockfish Fillets

When the grill or smoker reaches 425°F, place the pan with the fillets inside. Cook for about 15 minutes, depending on thickness. The fillets are done when an instant-read thermometer inserted into the thickest part of the fish reads 145°F. Remove from heat and let rest briefly before serving.

This recipe is fast and forgiving. The lemon and dill brighten the fish while the sauce prevents dryness and the breadcrumbs add a satisfying finish. It’s a simple method that yields a complex-tasting result—perfect for weeknight dinners or a relaxed weekend cook. If you try it, leave a note or rating to share how it turned out.