Keto Herb Butter Salmon with Roasted Cauliflower

Featured in: Quick Weeknight Meals

This dish features succulent salmon fillets crowned with a fragrant blend of softened butter, fresh parsley, dill, chives, garlic, and lemon zest. While the fish bakes to tender perfection, cauliflower florets roast until golden with olive oil, salt, pepper, and optional smoked paprika. The entire meal comes together in 40 minutes, offering a satisfying low-carb option packed with 35 grams of protein per serving. The herb butter melts beautifully over the salmon, infusing every bite with bright, fresh flavors that complement the earthy sweetness of the roasted cauliflower.

Updated on Wed, 11 Feb 2026 15:37:44 GMT
Golden-brown roasted cauliflower florets surround a platter of Keto Herb Butter Salmon with lemon wedges and fresh herbs. Pin
Golden-brown roasted cauliflower florets surround a platter of Keto Herb Butter Salmon with lemon wedges and fresh herbs. | forkandbloom.com

This Keto Herb Butter Salmon with Roasted Cauliflower is a masterclass in simple, healthy cooking. Combining succulent fish with a vibrant herb-infused butter and perfectly browned vegetables, it delivers a satisfying low-carb dinner that feels truly indulgent.

Golden-brown roasted cauliflower florets surround a platter of Keto Herb Butter Salmon with lemon wedges and fresh herbs. Pin
Golden-brown roasted cauliflower florets surround a platter of Keto Herb Butter Salmon with lemon wedges and fresh herbs. | forkandbloom.com

Roasting the cauliflower at a high temperature brings out its natural sweetness, providing a smoky contrast to the zesty, garlic-infused salmon. It is a balanced meal that simplifies your kitchen routine without sacrificing taste.

Ingredients

  • 4 salmon fillets (about 150 g/5 oz each), skin-on or skinless
  • 60 g (1/4 cup) unsalted butter, softened
  • 1 tbsp fresh parsley, finely chopped
  • 1 tbsp fresh dill, finely chopped
  • 1 tsp fresh chives, finely chopped
  • 1 garlic clove, minced
  • Zest of 1 lemon
  • 1/2 tsp sea salt
  • 1/4 tsp black pepper
  • Lemon wedges, to serve
  • 1 medium head cauliflower, cut into florets
  • 2 tbsp olive oil
  • 1/2 tsp sea salt
  • 1/4 tsp black pepper
  • 1/2 tsp smoked paprika (optional)
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Instructions

Step 1
Preheat the oven to 220°C (425°F). Line a baking sheet with parchment paper.
Step 2
In a small bowl, combine the softened butter, parsley, dill, chives, minced garlic, lemon zest, salt, and pepper. Mix until well blended. Set aside.
Step 3
Place cauliflower florets on the prepared baking sheet. Drizzle with olive oil, sprinkle with salt, pepper, and smoked paprika (if using). Toss to coat evenly and spread in a single layer.
Step 4
Roast cauliflower in the oven for 25 minutes, flipping halfway through, until golden and tender.
Step 5
Meanwhile, pat salmon fillets dry with paper towels. Place them skin-side down in a separate baking dish lined with parchment.
Step 6
Spread about 1 tablespoon of the herb butter over the top of each salmon fillet.
Step 7
During the last 12 minutes of cauliflower roasting, place the salmon in the oven. Bake for 10–12 minutes, or until salmon flakes easily with a fork.
Step 8
Serve the salmon hot, garnished with extra herbs and lemon wedges, alongside the roasted cauliflower.

Zusatztipps für die Zubereitung

For extra flavor, add a pinch of chili flakes to the herb butter. This simple addition brings a subtle warmth that complements the lemon and garlic beautifully.

Varianten und Anpassungen

You can customize the herb blend based on availability; swap dill for tarragon or basil if preferred. Both provide a unique aromatic profile that pairs wonderfully with roasted salmon.

Serviervorschläge

This dish pairs nicely with a crisp Sauvignon Blanc or sparkling water with lemon. The acidity of the drink cuts through the richness of the herb butter perfectly.

Sizzling Keto Herb Butter Salmon fillets bake alongside seasoned cauliflower, releasing aromatic herb and lemon steam in the oven. Pin
Sizzling Keto Herb Butter Salmon fillets bake alongside seasoned cauliflower, releasing aromatic herb and lemon steam in the oven. | forkandbloom.com

With minimal effort and maximum flavor, this salmon and cauliflower duo is sure to become a staple in your low-carb recipe rotation. Enjoy your fresh and fragrant meal!

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Recipe Q&A

What herbs work best in the butter?

Fresh parsley, dill, and chives create a classic combination that pairs beautifully with salmon. You can substitute tarragon or basil for the dill if you prefer different herbs.

Can I use frozen salmon fillets?

Yes, frozen salmon works well for this dish. Thaw completely in the refrigerator overnight and pat dry before applying the herb butter.

How do I know when the salmon is done?

The salmon is ready when it flakes easily with a fork and reaches an internal temperature of 145°F. The flesh should be opaque and slightly pink in the center.

What can I serve with this meal?

A crisp green salad with lemon vinaigrette complements the dish perfectly. You could also add sautéed spinach or serve with a low-carb cauliflower mash.

Can I make the herb butter ahead?

Absolutely! Mix the herb butter up to 3 days in advance and store it refrigerated. Bring to room temperature before spreading on the salmon for even application.

Is this suitable for meal prep?

Yes, both components store well for 3-4 days in the refrigerator. Reheat gently in the oven at 350°F for 10-15 minutes to maintain texture.

Keto Herb Butter Salmon with Roasted Cauliflower

Succulent salmon with herb butter and golden roasted cauliflower for a simple low-carb meal.

Prep duration
15 min
Cooking duration
25 min
Complete duration
40 min


Skill level Easy

Origin International

Yield 4 Portions

Dietary specifications Gluten-free, Low-Carb

Components

Salmon and Herb Butter

01 Salmon fillets, skin-on or skinless, 5 oz each, 4 fillets
02 Unsalted butter, softened, 1/4 cup
03 Fresh parsley, finely chopped, 1 tablespoon
04 Fresh dill, finely chopped, 1 tablespoon
05 Fresh chives, finely chopped, 1 teaspoon
06 Garlic clove, minced, 1 clove
07 Lemon zest, 1 lemon
08 Sea salt, 1/2 teaspoon
09 Black pepper, 1/4 teaspoon
10 Lemon wedges, for serving

Roasted Cauliflower

01 Cauliflower head, medium, cut into florets, 1 head
02 Olive oil, 2 tablespoons
03 Sea salt, 1/2 teaspoon
04 Black pepper, 1/4 teaspoon
05 Smoked paprika, optional, 1/2 teaspoon

Directions

Step 01

Prepare oven and workspace: Preheat oven to 425°F and line a baking sheet with parchment paper.

Step 02

Blend herb butter: In a small bowl, combine softened butter, parsley, dill, chives, minced garlic, lemon zest, sea salt, and black pepper. Mix until well incorporated and set aside.

Step 03

Season cauliflower: Place cauliflower florets on prepared baking sheet. Drizzle with olive oil, sprinkle with sea salt, black pepper, and smoked paprika if using. Toss to coat evenly and arrange in single layer.

Step 04

Roast cauliflower: Roast in preheated oven for 25 minutes, flipping halfway through, until golden and tender.

Step 05

Prepare salmon fillets: Pat salmon fillets dry with paper towels. Place them skin-side down in a separate baking dish lined with parchment paper.

Step 06

Apply herb butter to salmon: Spread approximately 1 tablespoon of herb butter over the top surface of each salmon fillet.

Step 07

Bake salmon: During the final 12 minutes of cauliflower roasting, place salmon in oven alongside cauliflower. Bake for 10 to 12 minutes until salmon flakes easily with a fork.

Step 08

Plate and serve: Transfer salmon and roasted cauliflower to serving plates. Garnish salmon with fresh herbs and lemon wedges. Serve immediately.

Necessary tools

  • Baking sheet
  • Parchment paper
  • Small mixing bowl
  • Chef's knife and cutting board
  • Baking dish
  • Spatula

Allergy details

Review each ingredient for potential allergens and consult healthcare professionals if you're uncertain about anything.
  • Contains fish (salmon) and dairy (butter)
  • Verify butter content for lactose traces if sensitive to dairy products

Nutritional information (per portion)

These values are provided as estimates only and shouldn't replace professional medical guidance.
  • Calories: 430
  • Fat: 29 g
  • Carbs: 7 g
  • Protein: 35 g