Pan-Seared Trout with Idaho Potato and Sage Butter

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

A fresh trout fillet pan-seared to golden perfection, served with creamy Idaho potatoes and fragrant sage butter inspired by the Magic Valley region. This american-inspired seafood ready in about 40 minutes pairs fillets (6 oz each) trout fillets, large, peeled and cubed Idaho potatoes, unsalted butter for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 420 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: 20 min Cook: 20 min Serves 4 American cuisine 420 cal/serving
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Ingredients

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Instructions

  1. Step 1: Place 2 large peeled and cubed Idaho potatoes in a pot of salted water (1 tsp salt). Bring to a boil over high heat and cook for 15 minutes until tender when pierced with a fork, then drain.
  2. Step 2: While potatoes cook, heat 3 tbsp olive oil in a large skillet over medium-high heat. Season 4 trout fillets with 1 tsp salt and 1/2 tsp black pepper on both sides. Add fillets skin-side down and cook for 4 minutes until the skin is crisp and golden, then carefully flip and cook for 2 more minutes until fish flakes easily.
  3. Step 3: Melt 6 tbsp unsalted butter in a small saucepan over medium heat. Add 12 fresh sage leaves and 2 minced garlic cloves, cooking for 3 minutes until butter turns golden and fragrant, then remove from heat.
  4. Step 4: Mash the drained potatoes with 2 tbsp chopped parsley, 1/2 tsp salt, 1/2 tsp black pepper, and 1 tbsp lemon juice until creamy but still slightly textured.
  5. Step 5: Plate the trout fillets over a bed of mashed Idaho potatoes and drizzle the warm sage butter over the fish and potatoes. Garnish with additional fresh sage or parsley if desired.

Frequently asked questions

How long does Pan-Seared Trout with Idaho Potato and Sage Butter take to make?

Total time is about 40 minutes (20 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 Pan-Seared Trout with Idaho Potato and Sage Butter?

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 unsalted butter from drying out.

Can I substitute ingredients in Pan-Seared Trout with Idaho Potato and Sage Butter?

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 Trout with Idaho Potato and Sage Butter 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 Trout with Idaho Potato and Sage Butter?

American 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.

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