Keto Salmon in Garlic Butter Lemon Sauce

Quick and easy keto salmon that’s perfect for a weeknight dinner. This low-carb recipe delivers perfectly seared salmon every time, finished with a simple garlic butter and lemon sauce. The exterior becomes crisp while the interior remains moist and flaky, making a rich, satisfying dish that fits well into a keto lifestyle.

This salmon recipe is one I make on repeat when I want something fast but truly satisfying. The combo of olive oil, butter, and salmon provides healthy fats and almost no carbs, so it keeps you full without feeling heavy. The garlic butter and fresh lemon form a bright, savory sauce that tastes like more effort than it takes. It’s ideal for an easy weeknight meal or for meal prep because it comes together quickly and reliably.

What I Learned While Testing

• Start with dry salmon. Pat the fillets completely dry so they sear instead of steam; moisture prevents a crisp skin.
• Cook skin-side down first. This crisps the skin, protects the flesh from overcooking, and helps the fillet release from the pan naturally.
• Let it sear undisturbed. Leave the fish in the pan for the full 4–5 minutes to build a golden crust—moving it too soon can tear the skin.
• Don’t overcook it. Slightly undercook and let the salmon rest off the heat; it will finish cooking gently and stay moist and flaky.
• Control the heat for the sauce. Sear on medium-high, then reduce heat before adding butter and garlic so the butter doesn’t burn and the garlic remains fragrant.

Keto Salmon Recipe

By: Sabine Venier

Servings: 4 servings

Prep: 10 mins

Cook: 15 mins

Total: 25 mins

Quick and easy keto salmon with a crisp outside and moist, flaky center, finished with a garlic butter and lemon sauce.

Equipment

• Cast iron skillet, non-stick pan, or griddle

Ingredients

• 4 salmon fillets, about 4–6 oz. each
• ½ tsp salt
• ¼ tsp black pepper
• 2 tbsp lemon juice
• 4 cloves garlic, minced
• 2 tbsp fresh parsley, chopped
• 2 tbsp olive oil
• 2 tbsp melted butter
• Lemon slices, for garnish (optional)

US Customary – Metric

Instructions

1. Pat salmon fillets dry with paper towels. Season both sides with salt and pepper.
2. Heat olive oil in a large skillet over medium-high heat until shimmering. Place salmon fillets skin-side down and press gently so the skin makes full contact. Cook 4–5 minutes without moving, until the skin is crisp and the fish is almost cooked through.
3. Flip salmon carefully and cook 1 minute more, just until the top is lightly golden and the center remains slightly translucent.
4. Reduce heat to medium-low. Add melted butter and minced garlic; cook 30–60 seconds, stirring, until garlic is fragrant but not browned.
5. Stir in lemon juice and cook another 30–60 seconds. Remove from heat, spoon the sauce over the fillets, sprinkle with parsley, and serve immediately.

Notes

• Swap lemon juice for fresh lime juice for a brighter, tangier finish.
• This works with frozen salmon if fully thawed and patted dry before cooking to ensure a proper sear.
• You can remove the skin after cooking if preferred; keeping it on while searing protects the flesh and creates the best texture.

Nutrition

Serving: 1 serving

Calories: 361 kcal

Carbohydrates: 2 g

Protein: 34 g

Fat: 24 g

Nutrition information is automatically calculated and should be used as an approximation.

Additional Info

Course: Dinner, Lunch

Cuisine: American

How to Make Keto Salmon Step by Step

Gather the ingredients, measure the lemon juice, mince the garlic, and chop the parsley so everything is ready before you start cooking.

Prep the salmon: Pat 4 salmon fillets (4–6 oz. each) completely dry with paper towels. Season both sides evenly with ½ tsp salt and ¼ tsp black pepper to help the skin crisp.

Sear the salmon: Heat 2 tbsp olive oil in a large skillet over medium-high until the oil shimmers. Place fillets skin-side down and press gently so the skin contacts the pan. Cook 4–5 minutes without moving until the skin is golden and releases easily. Flip and cook 1 minute more so the top is lightly golden but the center stays slightly translucent.

Make the garlic butter sauce: Reduce heat to medium-low. Add 2 tbsp melted butter and 4 cloves minced garlic, cooking 30–60 seconds while stirring until fragrant and lightly sizzling but not browned.

Finish with lemon and parsley: Pour in 2 tbsp lemon juice, simmer 30–60 seconds, then spoon the sauce over each fillet and sprinkle with 2 tbsp chopped parsley.

Serve and enjoy: Remove from heat and serve immediately with lemon slices if desired. The salmon should flake easily with a fork and remain moist and tender.

Serving Suggestions

This salmon pairs well with a cool, creamy dairy-free tzatziki for contrast, or served over a crisp Caesar salad with dairy-free dressing for a fresh, low-carb meal. For a warm side, serve with zucchini noodles to soak up the lemon butter sauce.

Storage Instructions

Store leftovers in an airtight container in the refrigerator for up to 3 days, keeping the sauce with the fish to prevent drying. Freezing is not recommended because the texture can suffer after thawing. To reheat, warm gently in a skillet over low heat with a little butter, or use short 30-second microwave bursts until just heated through to preserve moisture.

More Easy Keto Dinner Recipes

• Keto Chili: Rich, hearty chili with ground beef, tomatoes, and bold spices—an easy one-pot, low-carb meal ideal for meal prep.
• Keto Swedish Meatballs: Juicy meatballs in a creamy sauce made without breadcrumbs, quick to prepare and satisfying as the classic version.