Sheet Pan Harissa-Spiced Salmon with Roasted Cauliflower

By · Reviewed by AislePrompt Editorial · ·

Oven-roasted salmon fillets coated in smoky harissa spice alongside caramelized cauliflower florets for an easy Whole30 seafood dinner. This mediterranean-inspired whole30 (whole30, gluten free) ready in about 40 minutes pairs (6 oz each), skin on salmon fillets, harissa paste, divided olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 400 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: 10 min Cook: 30 min Serves 4 Mediterranean cuisine 400 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F. On a large rimmed baking sheet, toss 5 cups cauliflower florets with 2 tbsp olive oil, 1 tsp sea salt, 1/4 tsp black pepper, and 1 tsp garlic powder. Spread in an even layer.
  2. Step 2: Roast cauliflower for 15 minutes.
  3. Step 3: Meanwhile, in a small bowl combine 2 tbsp harissa paste, 1 tbsp olive oil, 1 tbsp fresh lemon juice, 1/2 tsp sea salt, and 1/4 tsp black pepper.
  4. Step 4: Remove baking sheet from oven after 15 minutes. Push cauliflower to one side. Place 4 salmon fillets skin-side down on the other side.
  5. Step 5: Brush the harissa mixture evenly over the tops of the salmon fillets.
  6. Step 6: Return sheet to oven and roast for 12-15 minutes until salmon is opaque and flakes easily with a fork, and cauliflower is tender and caramelized at edges.
  7. Step 7: Garnish salmon and cauliflower with 1/4 cup chopped fresh parsley before serving.

Equipment for this recipe

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Frequently asked questions

How long does Sheet Pan Harissa-Spiced Salmon with Roasted Cauliflower take to make?

Total time is about 40 minutes (10 min prep + 30 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 Sheet Pan Harissa-Spiced Salmon with Roasted 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 harissa paste from drying out.

Can I substitute ingredients in Sheet Pan Harissa-Spiced Salmon with Roasted 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 Sheet Pan Harissa-Spiced Salmon with Roasted 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 Sheet Pan Harissa-Spiced Salmon with Roasted Cauliflower whole30?

Yes — this recipe is tagged whole30, gluten free, dairy free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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