Mustard-Glazed Fish Fillets with Spinach

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Pan-seared fish fillets coated in a pungent mustard glaze, served with wilted fresh spinach. This indian-inspired seafood (high protein) ready in about 22 minutes pairs (6 oz each) salmon fillets, mustard, coconut oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 320 calories and feeds 2, 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: 12 min Serves 2 Indian cuisine 320 cal/serving
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Ingredients

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Instructions

  1. Step 1: Pat 2 salmon fillets dry with paper towels, then season both sides with 1/4 tsp salt and 1/2 tsp garlic powder.
  2. Step 2: Heat 1 tbsp coconut oil in a skillet over medium-high heat until shimmering, about 1 minute.
  3. Step 3: Place salmon fillets skin-side down (if skin-on) and cook for 4 minutes until golden, then flip and cook another 3 minutes until fish flakes easily.
  4. Step 4: In a small bowl, mix 2 tbsp mustard with 1 tbsp lemon juice. Brush glaze over fish and cook for 1 minute more until glossy.
  5. Step 5: Add 2 cups fresh spinach to the skillet, stirring until wilted and tender, about 2 minutes.

Frequently asked questions

How long does Mustard-Glazed Fish Fillets with Spinach take to make?

Total time is about 22 minutes (10 min prep + 12 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 Mustard-Glazed Fish Fillets with Spinach?

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 Mustard-Glazed Fish Fillets with Spinach?

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 Mustard-Glazed Fish Fillets with Spinach for a different number of people?

The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). 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 Mustard-Glazed Fish Fillets with Spinach high protein?

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

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