Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Oven-baked salmon fillets infused with fresh lemon and rosemary, served alongside creamy garlic mashed cauliflower for a low-carb feast. This mediterranean-inspired seafood (gluten free, low carb) ready in about 35 minutes pairs (6 oz each) salmon fillets, sliced into thin rounds lemon, chopped fresh rosemary for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 15 min Cook: 20 min Serves 4 Mediterranean cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Line a baking sheet with parchment paper. Place 4 salmon fillets (6 oz each) skin-side down on the sheet. Drizzle 2 tbsp olive oil over the salmon, sprinkle with 2 tbsp chopped fresh rosemary, 1 tsp salt, and 1/2 tsp black pepper. Lay thin lemon slices (from 1 lemon) evenly over the fillets.
  2. Step 2: Bake salmon for 12-15 minutes until just cooked through and flaky.
  3. Step 3: Meanwhile, bring a large pot of salted water to a boil. Add 1 large head cauliflower florets (about 2 lbs) and cook for 10-12 minutes until very tender.
  4. Step 4: Drain cauliflower and transfer to a food processor. Add 4 minced garlic cloves, 1/4 cup unsweetened almond milk, remaining 1/2 tsp salt, and 1/2 tsp black pepper. Pulse until smooth and creamy, scraping down sides as needed.
  5. Step 5: Stir in 1 tbsp olive oil and 2 tbsp chopped fresh parsley for brightness.
  6. Step 6: Serve baked salmon fillets over a scoop of garlic mashed cauliflower, spooning any pan juices over the fish.

Equipment for this recipe

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Frequently asked questions

How long does Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower take to make?

Total time is about 35 minutes (15 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep (6 oz each) salmon fillets from drying out.

Can I substitute ingredients in Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

Is Baked Lemon-Rosemary Salmon with Garlic Mashed Cauliflower gluten free?

Yes — this recipe is tagged gluten free, low carb based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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