Grilled Cod With Dill Sauce

This grilled cod with dill sauce features juicy, charred fish paired with blistered, sweet roasted tomatoes and a velvety, herb-packed cream sauce.

Why This Recipe Works:

• High-heat searing quickly coagulates the fish's surface proteins, preventing them from bonding with the grill grates.
• Blistering the cherry tomatoes concentrates their natural sugars, creating a sweet, acidic contrast to the rich dill sauce.
• Cold-whipping the sour cream and heavy cream prevents the dill sauce from breaking when it hits the warm fish.

I still remember the humid July evening when my cheap aluminum spatula snapped in half, sending a gorgeous piece of fresh Pacific cod plunging directly into the glowing coals of my Weber grill. I stood there in my flip-flops, holding a useless plastic handle, watching my expensive dinner turn to ash.

It was a humiliating lesson in physics.

Delicate white fish like cod has a fragile protein matrix that lacks the dense structural collagen of beef, making it incredibly prone to tearing on hot grates. Bear with me here, because when cold fish hits a moderately warm grill, the proteins chemically bond with the metal, essentially gluing your dinner to the grates. I tried wrapping it in foil for years, but that completely robbed me of the smoky char I craved.

The secret to flawless grilled fish is a combination of high thermal mass, a clean grate, and high-smoke-point oil. Cheap plastic spatulas will melt instantly, so invest in a sturdy metal one.

Trust me, this method works every single time.

We are going to pair these smoky, flaky fillets with sweet blistered tomatoes and a velvety, cold-whipped dill sauce that cuts right through the char. If you love quick seafood dinners, you might also enjoy our 30-Minute Italian Baked Cod.

Grilled Cod With Dill Sauce

• Publisher Storied Skillet
• Cuisine American
• Category Dinner, Seafood
• Prep Time 15 minutes
• Cook Time 15 minutes
• Servings 4
• Calories 320 calories
• Rating 4.8 1950
• Tags grilled cod, dill sauce, roasted tomatoes, summer fish recipe, healthy seafood

Ingredients

• 4 cod fillets (about 6 ounces each)
• 1 tbsp olive oil (for brushing)
• 1 tsp Diamond Crystal kosher salt (or 1/2 tsp fine sea salt)
• 1/2 tsp freshly cracked black pepper
• 2 cups cherry tomatoes
• 1 tbsp avocado oil (high smoke point for the grates)
• 1/2 cup sour cream
• 1/4 cup mayonnaise
• 2 tbsp fresh dill, finely chopped
• 1 tbsp fresh lemon juice
• 1 garlic clove, grated

Directions

1. Preheat your grill to high heat (around 450°F/230°C). Clean the grates thoroughly with a wire brush until they are spotless.
2. Pat the cod fillets completely dry with paper towels. Moisture is the enemy of a good sear; any surface water will steam the fish instead of grilling it.
3. Brush the cod fillets lightly with olive oil and season both sides with Diamond Crystal kosher salt and black pepper. Toss the cherry tomatoes with a splash of olive oil and salt in a small bowl.
4. Fold a paper towel into a small pad, dip it in avocado oil using tongs, and rub it vigorously over the hot grill grates to create a non-stick surface.
5. Place the cod fillets and cherry tomatoes directly onto the grates. Grill the cod undisturbed for 4 to 5 minutes, until a golden crust forms and the fish naturally releases from the grates.
6. Carefully flip the fillets using a thin metal spatula and grill for another 3 to 4 minutes, until the internal temperature reaches 145°F (63°C). Remove the fish and blistered tomatoes from the grill.
7. In a medium bowl, whisk together the sour cream, mayonnaise, fresh dill, lemon juice, grated garlic, and salt until smooth and creamy.
8. Plate the grilled cod immediately, top with the blistered roasted tomatoes, and drizzle generously with the creamy dill sauce.

Notes

• Always use Diamond Crystal kosher salt for seasoning; if you are using Morton's kosher salt or fine table salt, cut the volume in half (use 1/2 teaspoon instead of 1 teaspoon) to avoid over-salting.
• Patting the fish dry is crucial because water has a high latent heat of vaporization; any surface moisture will absorb the grill's energy to turn into steam, preventing the Maillard reaction from forming a crust.
• Do not walk away from the grill while blistering the tomatoes; their skins contain natural sugars that can go from beautifully caramelized to bitter, burnt carbon in under thirty seconds.
• The creamy dill sauce will thicken significantly after a day in the fridge as the sour cream proteins stabilize; simply whisk in a teaspoon of cold water or lemon juice to restore its velvety, drizzling consistency.
• If cod isn't available, other sturdy white fish like halibut or mahi-mahi work beautifully, but avoid delicate flatfish like sole or flounder which will disintegrate on the grates.

Serving Suggestions

Complete this light summer meal by pairing the smoky fish with fresh, vibrant sides that complement the rich dill sauce.

• Serve alongside a refreshing Cucumber Dill Salad to double down on the cooling, herbaceous notes.
• Plate the fish over a bed of Umami Zucchini Noodles for a delicious, low-carb summer dinner.
• Pair with colorful grilled vegetable skewers to keep the entire meal cooked outdoors on the grill.
• Add a side of Easy Roasted Baby Carrots for a sweet, earthy contrast to the tangy dill cream.

Storage and Reheating

Leftover fish is always a gamble.

While the dill sauce keeps beautifully in an airtight container for up to four days, the grilled cod is best enjoyed within twenty-four hours. As it sits in the fridge, the delicate fish proteins tighten and lose their moisture, which can make the leftovers a bit dry.

Never use the microwave to reheat this fish. Instead, warm the cod gently in a skillet over low heat with a splash of water.

Serve the reheated fish with cold sauce.

The contrast of the warm, smoky fish and the chilled, herbaceous dill cream is absolutely perfect, even on day two. Just remember to stir the sauce well before spooning it over the fish.

Ingredient Substitutes

If you don't have all the ingredients on hand, these simple swaps will keep your dinner on track without sacrificing flavor.

1. Cod: Halibut, mahi-mahi, or even thick-cut sea bass make excellent sturdy white fish substitutes.
2. Sour Cream: Greek yogurt works as a fantastic high-protein alternative that still provides that signature tang.
3. Fresh Dill: If you must use dried dill, reduce the amount to 2 teaspoons, though fresh is highly recommended for the best flavor.
4. Avocado Oil: Any neutral oil with a high smoke point, like canola or grapeseed oil, will work perfectly for greasing the grates.

I learned the hard way that grilling fish requires patience and a clean grill, but once you hear that sizzle and flip a perfectly intact fillet, you'll feel like an absolute backyard champion. Grab your tongs, heat up those grates, and enjoy every single bite of this bright, smoky summer dinner.