Sheet Pan Roasted Rocky Mountain Trout with Lemon and Dill

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Whole Rocky Mountain trout roasted on a sheet pan with fresh lemon slices, dill, and garlic for a bright and aromatic fish dish. This american-inspired seafood ready in about 30 minutes pairs large, thinly sliced lemon, chopped fresh dill, thinly sliced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 280 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: 20 min Serves 2 American cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Line a sheet pan with parchment paper and brush with 1 tbsp olive oil.
  2. Step 2: Pat 2 whole Rocky Mountain trout dry with paper towels. Season inside and out with 1 1/2 tsp salt and 1 tsp freshly ground black pepper.
  3. Step 3: Stuff each trout cavity with half of 1 large lemon sliced thinly, 1 1/2 tbsp chopped fresh dill, and 1 1/2 sliced garlic cloves.
  4. Step 4: Place trout on the prepared sheet pan and drizzle with remaining 2 tbsp olive oil. Arrange remaining lemon slices and dill on top.
  5. Step 5: Roast in oven for 18-20 minutes until the fish flakes easily with a fork and skin is slightly crisp.
  6. Step 6: Remove from oven and let rest for 5 minutes before serving with pan juices spooned over.

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Frequently asked questions

How long does Sheet Pan Roasted Rocky Mountain Trout with Lemon and Dill take to make?

Total time is about 30 minutes (10 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 Sheet Pan Roasted Rocky Mountain Trout with Lemon and Dill?

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 large, thinly sliced lemon from drying out.

Can I substitute ingredients in Sheet Pan Roasted Rocky Mountain Trout with Lemon and Dill?

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 Roasted Rocky Mountain Trout with Lemon and Dill 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.

What goes well with Sheet Pan Roasted Rocky Mountain Trout with Lemon and Dill?

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.