Grilled Swordfish with Vibrant Pesto

The first time I tasted swordfish prepared this way was at a tiny trattoria overlooking the Mediterranean in Cinque Terre. The air was thick with the scent of sea salt and basil, and the swordfish, fresh off the grill and slathered in vibrant pesto, was simply divine. It was a culinary experience so sublime that I’ve been chasing that flavor ever since, trying to recreate that magic in my own kitchen. This recipe gets incredibly close, bringing the taste of the Italian coast to your own backyard.

Recipe Overview

• Prep Time: 15 minutes
• Cook Time: 10 minutes
• Total Time: 25 minutes
• Servings: 4
• Dietary Type: Gluten-Free (naturally)

Ingredients

• 1 lb swordfish (or other medium dense to dense fish)

For the Pesto Sauce (makes 1 cup):

• 1/4 cup olive oil
• 1 cup nuts (such as piñon, almonds, pecans, or walnuts)
• 1 bunch cilantro or 1 bunch Italian parsley
• 1/4 cup parmesan cheese or 1/4 cup romano cheese, grated
• 1 head garlic (about 6-8 cloves)
• 1/2 teaspoon pepper
• Zest of 1 lemon

For Garnish:

• Lemon wedges
• Fresh herbs (sprigs)

Equipment Needed

• Food processor or blender
• Grill or broiler
• Small bowl for basting

Instructions

1. Prepare the Pesto: In a food processor or blender, combine the olive oil, nuts, cilantro or Italian parsley, parmesan cheese or romano cheese, garlic cloves, pepper, and lemon zest.
2. Process the Pesto: Pulse the ingredients until smooth, scraping down the sides of the bowl as needed to ensure everything is fully incorporated. The pesto should be a vibrant green color with a slightly coarse texture.
3. Prepare the Grill: Preheat your grill to medium-high heat. If using a broiler, position the rack about 4-6 inches from the heating element and preheat the broiler.
4. Baste the Swordfish: Lightly brush the swordfish with some of the prepared pesto. Reserve the remaining pesto for serving.
5. Grill or Broil: Place the swordfish on the preheated grill or under the broiler.
6. Cook the Swordfish: Cook for a total of 10 minutes per inch of thickness, flipping halfway through. This typically translates to about 5 minutes per side for a 1-inch thick steak.
7. Baste Again: While cooking, baste the swordfish with more pesto each time you turn it. This will help to keep the fish moist and infuse it with the fresh pesto flavor.
8. Check for Doneness: The swordfish is done when it flakes easily with a fork and is opaque throughout. The internal temperature should reach 145°F (63°C). Use a meat thermometer to ensure accuracy.
9. Serve: Remove the swordfish from the grill or broiler and place it on a serving platter. Top with the remaining pesto.
10. Garnish: Garnish with lemon wedges and sprigs of fresh herbs for a pop of color and aroma. Serve immediately.

Expert Tips & Tricks

• Don’t Overcook: Swordfish can become dry and tough if overcooked. Use a meat thermometer and cook until just done to maintain its succulent texture.
• Nut Variety: Experiment with different nuts in your pesto. Each type will lend a unique flavor profile. Toasted pine nuts offer a classic Italian taste, while walnuts provide a more earthy note.
• Herb Choice: If you find cilantro too overpowering, use Italian parsley or a combination of both for a milder pesto flavor.
• Make Ahead: The pesto can be made a day or two in advance. Store it in an airtight container in the refrigerator. The flavor will actually deepen overnight. You can also freeze pesto for longer storage.
• Prevent Sticking: To prevent the swordfish from sticking to the grill, make sure the grates are clean and well-oiled. You can also use a grill mat.
• Garlic Intensity: If you prefer a less intense garlic flavor, you can roast the garlic cloves before adding them to the pesto. Roasting mellows out the garlic’s pungency.

Serving & Storage Suggestions

Serve the grilled swordfish hot off the grill or broiler. The vibrant pesto adds a beautiful visual appeal and enhances the fresh, clean flavor of the fish. Pair it with grilled vegetables like asparagus, zucchini, or bell peppers for a complete and balanced meal. A simple green salad with a lemon vinaigrette also complements the dish perfectly.

Storage: Leftover cooked swordfish can be stored in an airtight container in the refrigerator for up to 3 days. Reheat gently in a skillet over low heat or in the microwave. Freezing cooked swordfish is not recommended as it can alter the texture. Pesto can be stored in the refrigerator for up to 2 weeks or frozen for several months. Thaw frozen pesto in the refrigerator overnight before using.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	536 kcal	N/A
Total Fat	40.5 g	62%
Saturated Fat	7.1 g	35%
Cholesterol	80.3 mg	26%
Sodium	419.4 mg	17%
Total Carbohydrate	14.1 g	4%
Dietary Fiber	3.5 g	13%
Sugars	1.8 g	7%
Protein	31.6 g	63%

Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

• Different Fish: If swordfish is not available, you can substitute it with other firm, white-fleshed fish such as tuna, mahi-mahi, or halibut. Adjust cooking times accordingly based on the thickness of the fish.
• Dairy-Free Pesto: To make a dairy-free pesto, simply omit the Parmesan or Romano cheese. You can add a tablespoon of nutritional yeast for a cheesy flavor, or simply enjoy the pesto without it.
• Spicy Pesto: Add a pinch of red pepper flakes to the pesto for a touch of heat.
• Lemon-Herb Pesto: In addition to lemon zest, add a tablespoon of chopped fresh oregano or thyme to the pesto for a more complex flavor profile.
• Sun-Dried Tomato Pesto: Incorporate 1/4 cup of sun-dried tomatoes (oil-packed, drained) into the pesto for a tangy and flavorful twist.

FAQs (Frequently Asked Questions)

Q: Can I use store-bought pesto for this recipe?
A: While homemade pesto is always best, you can certainly use store-bought pesto in a pinch. Choose a high-quality pesto and adjust the seasoning to your liking.

Q: How do I prevent the garlic from burning when grilling?
A: Grilling the fish over medium heat will help prevent the garlic in the pesto from burning. You can also slightly reduce the amount of garlic in the pesto if you’re concerned about it.

Q: Can I bake the swordfish instead of grilling it?
A: Yes, you can bake the swordfish in a preheated oven at 400°F (200°C) for about 12-15 minutes, or until it flakes easily with a fork. Baste with pesto before and during baking.

Q: What wine pairs well with grilled swordfish with pesto?
A: A crisp, dry white wine such as Sauvignon Blanc, Pinot Grigio, or Vermentino pairs beautifully with the flavors of swordfish and pesto.

Q: How can I tell if the swordfish is fresh?
A: Fresh swordfish should have a firm texture, a bright color, and a mild, sea-like smell. Avoid swordfish that looks dull, feels slimy, or has a strong, fishy odor.

Final Thoughts

This grilled swordfish with pesto recipe is a testament to the simple yet profound power of fresh ingredients and thoughtful preparation. The vibrant pesto, bursting with herbaceous notes and the bright tang of lemon, elevates the firm, meaty swordfish to a new level of deliciousness. I urge you to try this recipe and experience the taste of the Mediterranean in your own home. Don’t be afraid to experiment with different nuts and herbs in your pesto to create your own signature flavor. And most importantly, share your culinary creation with friends and family – because good food is always best enjoyed in good company. Buon appetito!