Sheet Pan Harissa-Spiced Salmon with Roasted Cauliflower

By AislePrompt Editorial · Published 2026-06-02 · Updated 2026-06-02

How this recipe was made — this recipe was drafted by AislePrompt's AI-assisted pipeline from technique templates and USDA-sourced nutrition data, and published by AislePrompt Editorial — see how AislePrompt recipes are drafted and published.

Oven-roasted salmon fillets coated in smoky harissa spice alongside caramelized cauliflower florets for an easy Whole30 seafood dinner. This Mediterranean-inspired Whole30 recipe (gluten free), ready in about 40 minutes, pairs salmon fillets, cauliflower florets, harissa paste 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 Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. 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

4 pieces (6 oz each), skin on salmon fillets
1 head (about 5 cups), cut into bite-sized pieces cauliflower florets
2 tbsp harissa paste
3 tbsp, divided olive oil
1 tbsp, freshly squeezed lemon juice
1 tsp garlic powder
1 1/2 tsp, divided sea salt
1/2 tsp, divided black pepper
1/4 cup, chopped (for garnish) fresh parsley

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Instructions

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.
Step 2: Roast cauliflower for 15 minutes.
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.
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.
Step 5: Brush the harissa mixture evenly over the tops of the salmon fillets.
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.
Step 7: Garnish salmon and cauliflower with 1/4 cup chopped fresh parsley before serving.