Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Delicate sea bass fillets pan-seared to golden perfection and served with a smoky, nutty Romesco sauce enriched with roasted red peppers and toasted almonds. This spanish-inspired seafood ready in about 25 minutes blends olive oil, drained roasted red peppers, toasted almonds into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 320 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. 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: 10 min Serves 4 Spanish cuisine 320 cal/serving
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Ingredients

Instructions

  1. Step 1: To prepare the Romesco sauce, combine 1 cup roasted red peppers, 1/3 cup toasted almonds, 2 minced garlic cloves, 1 tbsp tomato paste, 2 tbsp sherry vinegar, 1 tsp smoked paprika, 1 tsp salt, 1/2 tsp black pepper, and 1/4 cup water in a blender. Puree until smooth and set aside.
  2. Step 2: Heat 3 tbsp olive oil in a large nonstick skillet over medium-high heat. Pat dry 4 skin-on sea bass fillets and season both sides with 1/2 tsp salt and 1/4 tsp black pepper.
  3. Step 3: Place fillets skin-side down in the hot oil and cook undisturbed for 4-5 minutes until the skin is crisp and golden. Flip and cook for another 2-3 minutes until the fish is opaque and flakes easily.
  4. Step 4: Plate each fillet and spoon a generous 3-4 tbsp of the Romesco sauce over the top. Garnish with 2 tbsp chopped fresh parsley and serve immediately.

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Frequently asked questions

How long does Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds take to make?

Total time is about 25 minutes (15 min prep + 10 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds?

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 Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds 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.

What goes well with Pan-Seared Sea Bass with Romesco Sauce and Toasted Almonds?

Spanish seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.