Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 1/2 lb (680 g) baby potatoes, halved (or quartered if large)
- 2 tbsp olive oil
- 1 tsp kosher salt, divided
- 1/2 tsp black pepper, divided
- 4 trout fillets (about 6 oz / 170 g each), skin-on, pin bones removed
- 1 tbsp neutral oil (canola, grapeseed, or avocado)
- 6 tbsp (85 g) unsalted butter
- 1 tbsp capers, drained (optional)
- 1 tbsp fresh lemon juice (plus lemon wedges for serving)
- 2 tbsp chopped fresh parsley (optional)
Do This
- 1) Heat oven to 425°F (220°C). Toss potatoes with olive oil, 1/2 tsp salt, and 1/4 tsp pepper.
- 2) Roast potatoes 30–35 minutes, flipping once, until browned and tender.
- 3) Pat trout very dry; season skin side with 1/4 tsp salt and 1/8 tsp pepper, flesh side with remaining salt/pepper.
- 4) Sear trout skin-side down in a hot skillet with neutral oil, 3–4 minutes until crisp; flip 1–2 minutes to finish.
- 5) Remove trout; in the same pan brown butter 3–5 minutes until nutty and amber. Add capers (optional) for 30 seconds.
- 6) Turn off heat; stir in lemon juice. Spoon brown butter over fish.
- 7) Serve trout with roasted potatoes, parsley, and lemon wedges.
Why You’ll Love This Recipe
- Crisp skin, tender fish: A simple pan-sear gives you restaurant-style texture without fuss.
- Big flavor, small ingredient list: Brown butter and lemon do most of the work.
- One timing-friendly meal: Potatoes roast while you cook the trout in about 10 minutes.
- Flexible: Add capers for a briny punch, or keep it clean and buttery.
Grocery List
- Produce: baby potatoes, lemon, parsley (optional)
- Dairy: unsalted butter
- Seafood: skin-on trout fillets
- Pantry: olive oil, neutral oil (canola/grapeseed/avocado), capers (optional), kosher salt, black pepper
Full Ingredients
Roasted Potatoes
- 1 1/2 lb (680 g) baby potatoes, halved (quarter large ones so pieces are similar size)
- 2 tbsp olive oil
- 1/2 tsp kosher salt
- 1/4 tsp freshly ground black pepper
Pan-Seared Trout
- 4 trout fillets, skin-on (about 6 oz / 170 g each), pin bones removed
- 1 tbsp neutral oil (canola, grapeseed, or avocado)
- 1/2 tsp kosher salt (use a bit less if your fillets are thin), divided
- 1/4 tsp freshly ground black pepper, divided
Brown Butter, Lemon, and Optional Capers
- 6 tbsp (85 g) unsalted butter
- 1 tbsp capers, drained (optional)
- 1 tbsp fresh lemon juice
- Lemon wedges, for serving
- 2 tbsp chopped fresh parsley (optional, for a fresh finish)
Step-by-Step Instructions
Step 1: Preheat the oven and prep your sheet pan
Arrange a rack in the center of the oven and preheat to 425°F (220°C). Line a rimmed baking sheet with parchment paper for easier cleanup (optional but helpful), or leave it bare for maximum browning.
Step 2: Season and roast the potatoes
In a large bowl, toss the potatoes with 2 tbsp olive oil, 1/2 tsp kosher salt, and 1/4 tsp black pepper until evenly coated. Spread them out on the sheet pan in a single layer, cut sides down where possible.
Roast for 30–35 minutes, flipping once halfway through, until deeply golden and tender when pierced with a fork.
Step 3: Dry and season the trout for crisp skin
While the potatoes roast, prep the fish. Use paper towels to pat the trout very dry on both sides, paying special attention to the skin. (Dry skin is the secret to crisp skin.)
Season the flesh side with 1/4 tsp kosher salt and 1/8 tsp black pepper. Season the skin side with the remaining 1/4 tsp kosher salt and 1/8 tsp black pepper.
Step 4: Heat the pan until properly hot
About 10 minutes before the potatoes are done, place a large skillet (cast iron or stainless steel works best) over medium-high heat. Add 1 tbsp neutral oil and heat until the oil shimmers.
If you have one, an instant-read thermometer can help: the pan surface is typically ready around 375–400°F (190–205°C). If you don’t, look for shimmering oil and a quick sizzle when you tap the pan with a tiny droplet of water (be careful).
Step 5: Pan-sear the trout until the skin is crisp
Place the trout in the skillet skin-side down, laying it down away from you to avoid splatter. Immediately press each fillet gently with a spatula for 10–15 seconds so the skin makes full contact and doesn’t curl.
Cook skin-side down for 3–4 minutes, undisturbed, until the skin is crisp and the fish looks mostly opaque up the sides. Flip and cook the flesh side for 1–2 minutes, just until the center is barely opaque and flakes easily. (If you like to temp fish, aim for about 125–130°F (52–54°C) in the thickest part for moist trout.)
Transfer the trout to plates, skin-side up to keep it crisp.
Step 6: Make brown butter (and add capers if using)
Carefully pour off any excess oil, leaving behind any browned bits in the pan (those add flavor). Reduce heat to medium and add 6 tbsp unsalted butter.
Cook, stirring and swirling often, for 3–5 minutes until the butter foams, then the foam subsides and you see golden-brown milk solids on the bottom. The aroma should smell nutty and toasted. Watch closely in the final minute so it doesn’t burn.
If using capers, add 1 tbsp drained capers and cook for 30 seconds, just until they sizzle and bloom in the butter.
Step 7: Finish with lemon and serve with roasted potatoes
Turn off the heat and stir in 1 tbsp fresh lemon juice (it will sizzle). Taste and add a tiny pinch of salt if needed.
Spoon the brown butter (and capers, if using) over the trout. Add roasted potatoes to the plate, sprinkle with 2 tbsp chopped parsley if using, and serve right away with lemon wedges.
Pro Tips
- Dry the skin thoroughly: Moisture is the enemy of crispness. Pat dry, then let the fillets sit skin-side up for 5 minutes while the pan heats.
- Press at the start: A gentle 10–15 second press prevents curling and ensures full contact for even crisping.
- Don’t overcook trout: It goes from tender to dry quickly. Pull it when it’s just opaque and still looks a touch glossy in the very center.
- Brown butter timing: The color changes fast at the end. When it’s light amber and smells nutty, it’s ready; it will keep browning from residual heat.
- Keep the skin crisp: Plate skin-side up and spoon sauce mostly on the flesh, letting a little run around the fish rather than soaking the skin.
Variations
- Garlic-herb brown butter: Add 1 small minced garlic clove to the butter in the last 30 seconds (off heat if your pan is very hot), plus extra parsley.
- Almond brown butter: Add 2 tbsp sliced almonds to the butter as it browns; toast until golden, then finish with lemon.
- Swap the fish: This method works well with Arctic char or salmon fillets; adjust cook time based on thickness.
Storage & Make-Ahead
Trout is best the day it’s cooked, especially for crisp skin. If you have leftovers, cool and refrigerate in an airtight container for up to 2 days. Reheat gently in a skillet over medium-low heat until just warmed through; add a small pat of butter or a spoonful of water to keep it from drying out. Potatoes can be reheated on a sheet pan at 400°F (205°C) for 8–12 minutes to re-crisp. To prep ahead, you can halve the potatoes up to 24 hours in advance and store submerged in cold water in the fridge; drain and dry thoroughly before roasting.
Nutrition (per serving)
Approximate, based on 4 servings (including potatoes and brown butter): 620 calories, 38 g protein, 38 g fat, 33 g carbohydrates, 4 g fiber, 650 mg sodium.
