Effortless Salmon Pesto Butter

Featured in: Hearty Meals for Every Table

Dinner plans just got an upgrade! Crispy salmon fillets turn buttery soft under homemade pesto butter. It melts down into the fish, boosting the flavors with herby basil and zesty lemon. With only seven ingredients, it comes together so quick—perfect for casual dinners, but special enough to impress.

A woman in a kitchen taking a selfie.
By Rosa Rosa
Updated on Tue, 13 May 2025 17:46:26 GMT
Salmon fillet with rich pesto and pasta. Pin it
Salmon fillet with rich pesto and pasta. | letscookiteasy.com

In just 20 minutes, you can turn basic salmon into something you'd swear came from a fancy restaurant. Throw some herby, garlicky pesto butter on top after quickly pan-searing your fish and you've got a dinner that tastes way more complicated than it is. I first came up with this on a crazy busy night when friends dropped by, and it totally saved me.

This dish is my go-to when guests come over. The very first time I served it up, my partner was sure I’d picked it up straight from our local seafood spot. Now, we make it all the time—especially when we’re not in the mood to spend hours at the stove.

Mouthwatering Key Ingredients

  • Fresh lemon juice: brings brightness that wakes up the whole dish
  • Black pepper: grind it fresh for best flavor
  • Center-cut salmon fillets: even thickness means everything cooks at the same pace
  • Kosher salt: the bigger flakes spread out for perfect seasoning
  • Classic basil pesto: store-bought is fine, but homemade adds extra oomph
  • Unsalted butter: lets you pick how salty you want things
  • Light olive oil: perfect for high-heat searing, keeps things from sticking

Detailed Step Guide

Finishing Touches:
Move the salmon to plates and pour any leftover pan butter on top. Right before eating, squeeze a little lemon over everything to add brightness and cut the richness. That tartness brings it all together.
Flip and Top with Butter:
Use a thin spatula to flip your salmon pieces. Add a spoonful of your pesto butter right away so it starts melting over each fillet. Turn the heat down and let it cook on the second side for a few minutes. It’s done when you can flake it with a fork, but there’s still some slightly see-through pink inside.
Sear the First Side:
Put your salmon into the pan with what’ll be the top side down. Don’t touch it for about 4 or 5 minutes—a juicy crust will form. Only flip when it lets go easily. If it sticks, add a splash of water and it’ll loosen up.
Heat It Up and Season Well:
Add olive oil to your skillet and heat it on medium until it looks shimmery. Sprinkle your salmon with salt and pepper on both sides, gently pressing the seasoning in. This is what builds all that awesome flavor.
Mix Up Pesto Butter:
In a small bowl, smash together your room-temp butter and pesto using a fork. Don’t melt the butter—just make sure it’s soft so it blends and turns a nice green color. You shouldn’t see any plain butter left. Leave the mixture out so it spreads easily later.
A plate of food with fish and pasta. Pin it
A plate of food with fish and pasta. | letscookiteasy.com

Pesto butter really is the hero here. I stumbled onto it by tossing in some extra basil pesto I had around, melting it into a bit of butter. That combo is way more flavorful than it sounds—my family wants it on everything now, from chicken breasts to roasted veggies.

Perfect Pairings

Salmon tastes best with sides that keep it the star. I usually make roasted asparagus and some fluffy couscous—they both mop up the extra butter. Or if you want something lighter, do a simple arugula salad with lemony dressing that matches the citrusy notes on the fish.

Finding Top-Notch Salmon

Great salmon makes all the difference. Grab fillets that feel firm, smell ocean-fresh, and look bright. Wild salmon packs the best taste but needs gentle cooking since it’s leaner. Farm-raised is okay too—just check it’s been raised sustainably. Center-cut pieces cook evenly and won’t leave you with dry ends.

Handy Make Ahead Ideas

The salmon itself is awesome fresh, but you can get ahead with the pesto butter. Make it up to a month early, roll in plastic, and stash it in the fridge or freezer. Whenever you need it, just slice off a piece and pop it on hot salmon. That way a fancy dinner's always doable, even when you’re slammed.

A plate of food with a salmon fillet and pasta. Pin it
A plate of food with a salmon fillet and pasta. | letscookiteasy.com

Frequently Asked Questions

→ How do I check if the salmon’s done?

Poke the fillet gently—it should separate into big flakes. Or use a thermometer: once it passes 145°F inside, it’s good to go.

→ Is store pesto okay in the butter?

Totally! Grab a good-quality store pesto and mix it in. No need to make it from scratch if you’re in a rush.

→ What about using frozen salmon?

Frozen works fine! Thaw all the way in the fridge before cooking so your fish cooks evenly.

→ Which pan should I use for the salmon?

Cast-iron or stainless steel both brown nicely. Just preheat and oil the pan so the fish doesn’t stick.

→ Can I prep pesto butter ahead?

You bet. Make it up to four weeks beforehand and keep it chilled until you’re ready.

Effortless Salmon Pesto Butter

Quick pan-fried salmon with herby pesto butter. It’s a speedy, fancy-feeling meal you can whip up in 20 minutes.

Prep Time
10 Minutes
Cook Time
10 Minutes
Total Time
20 Minutes
By Rosa: Rosa

Category: Main Courses

Difficulty: Easy

Cuisine: Italian

Yield: 4 Servings (4 portions of salmon)

Dietary: Low-Carb, Gluten-Free

Ingredients

→ Pesto Butter

01 2 tablespoons basil pesto
02 4 tablespoons softened unsalted butter

→ Salmon

03 Juice from half a lemon
04 ½ teaspoon ground black pepper
05 1 teaspoon kosher salt
06 4 skinless salmon portions, each about 4 ounces
07 2 tablespoons mild olive oil

Instructions

Step 01

Use a fork to blend the basil pesto with the butter in a small bowl. Once it’s fully mixed, leave it aside.

Step 02

Warm the olive oil over medium heat in a skillet. Season both sides of the salmon with salt and pepper. Cook the salmon on one side for about 4–5 minutes or until it has a nice golden layer. If it sticks to the pan, give it a little more time to loosen up. To make flipping easier, you can splash a bit of water into the skillet if needed.

Step 03

Turn the salmon over and spread about 1 tablespoon of pesto butter across the top of each piece. Lower the heat to medium-low and cook for another 3–5 minutes, until fully cooked and tender. Cooking time will vary based on thickness.

Step 04

Move the salmon onto a plate or platter for serving. Pour any leftover butter from the pan over the fish. Squeeze a little lemon juice on top and enjoy right away.

Notes

  1. When salmon is ready, it reaches 145°F inside. You can also check by pressing gently—it’ll flake easily when done.
  2. Keep leftovers sealed in the fridge for up to 4 days, or freeze for 3 months.
  3. The pesto butter can be whipped up in advance and stored in the fridge for up to a month.

Tools You'll Need

  • Cast iron or stainless steel skillet, about 12 inches wide

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Includes dairy due to butter
  • Includes fish due to salmon

Nutrition Facts (Per Serving)

It is important to consider this information as approximate and not to use it as definitive health advice.
  • Calories: 429
  • Total Fat: 36 g
  • Total Carbohydrate: 1 g
  • Protein: 24 g