Quick Recipe Version (TL;DR)
Quick Ingredients
- 4 trout fillets (skin-on), 6 oz (170 g) each
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp black pepper
- 1/4 cup (30 g) all-purpose flour (optional, for extra crisp)
- 1/3 cup (40 g) sliced almonds
- 6 tbsp (85 g) unsalted butter, divided
- 2 tbsp neutral oil (avocado, grapeseed, or canola)
- 2 tbsp fresh lemon juice (from 1 lemon), plus wedges for serving
- 3 tbsp finely chopped fresh flat-leaf parsley
Do This
- 1. Pat trout very dry; season with salt and pepper (lightly flour if using).
- 2. Toast sliced almonds in 1 tbsp butter until golden; transfer to a bowl.
- 3. Heat oil + 2 tbsp butter in a skillet over medium-high until shimmering (about 350–375°F / 175–190°C).
- 4. Sear trout skin-side down 3–5 minutes; flip and cook 1–2 minutes more (to 140°F / 60°C, or 145°F / 63°C if you prefer).
- 5. Remove fish; lower heat to medium and add remaining butter; brown until nutty and amber.
- 6. Stir in toasted almonds, lemon juice, and parsley; spoon sauce over trout and serve right away.
Why You’ll Love This Recipe
- Crispy-edged trout with a buttery, lemony, restaurant-style finish.
- The brown butter almond sauce tastes fancy, but it’s quick and totally doable at home.
- One skillet, minimal ingredients, big payoff.
- Flexible: works with fillets or butterflied whole trout.
Grocery List
- Produce: 1 lemon, 1 small bunch flat-leaf parsley
- Dairy: unsalted butter
- Pantry: sliced almonds, neutral oil, all-purpose flour (optional), kosher salt, black pepper
Full Ingredients
Fish
- 4 trout fillets (skin-on), 6 oz (170 g) each (about 1 1/2 lb / 680 g total)
- 1 tsp kosher salt, plus more to taste
- 1/2 tsp black pepper
- 1/4 cup (30 g) all-purpose flour, for light dredging (optional)
Almond Brown-Butter Sauce
- 1/3 cup (40 g) sliced almonds
- 6 tbsp (85 g) unsalted butter, divided (1 tbsp for toasting almonds; 2 tbsp for pan-frying; 3 tbsp for browning into sauce)
- 2 tbsp neutral oil (avocado, grapeseed, or canola)
- 2 tbsp fresh lemon juice (from 1 lemon)
- 3 tbsp finely chopped fresh flat-leaf parsley
For Serving (Optional, but recommended)
- Lemon wedges
- Pinch of flaky salt (to finish)
Step-by-Step Instructions
Step 1: Dry and season the trout
Set a large plate near the stove. Pat the trout fillets very dry on both sides with paper towels (this is the key to crisp edges and a non-steamy sear).
Season the flesh side of each fillet with the kosher salt and black pepper. If you like an extra-crisp finish, lightly dredge the flesh side (and the skin side, too, if you want) in the flour and shake off any excess. You want a thin dusting, not a thick coating.
Step 2: Toast the almonds
Place a large skillet (preferably stainless steel or cast iron) over medium heat. Add 1 tbsp of the butter. Once melted, add the sliced almonds.
Cook, stirring often, until the almonds are fragrant and golden, 2–4 minutes. Transfer almonds (and any buttery bits) to a small bowl right away so they don’t keep browning in the hot pan.
Step 3: Heat the pan for a crisp sear
Carefully wipe out any loose almond crumbs if there are a lot (a few are fine). Return the skillet to medium-high heat. Add the neutral oil and 2 tbsp of the butter.
When the butter is melted and the surface looks shimmering (aim for about 350–375°F / 175–190°C at the pan surface), you’re ready to cook.
Step 4: Pan-fry the trout (skin-side down first)
Lay the trout fillets in the skillet skin-side down, placing them away from you to avoid splatter. They should sizzle immediately.
Cook without moving them until the skin is crisp and releases easily, 3–5 minutes depending on thickness. If the fillets curl, gently press them flat for 10–15 seconds with a fish spatula.
Flip and cook the second side just until the flesh is opaque and flakes easily, 1–2 minutes. For doneness, aim for an internal temperature of 140°F / 60°C for moist fish, or 145°F / 63°C if you prefer it more well done.
Step 5: Rest the fish briefly
Transfer the trout to serving plates (or a warm platter), skin-side up if you want to keep the skin crisp. Let it rest while you finish the sauce, about 2 minutes.
Step 6: Make the brown-butter almond sauce
Turn the heat down to medium. Add the remaining 3 tbsp butter to the skillet.
Swirl and stir as it melts, scraping up any flavorful browned bits from the fish. The butter will foam, then the foam will begin to subside; you’ll see golden-brown milk solids forming on the bottom. Continue cooking until the butter smells nutty and turns a deep golden amber, 1–3 minutes. Watch closely—the line between browned and burnt is quick.
Remove the pan from the heat and immediately stir in the toasted almonds, lemon juice, and chopped parsley. The sauce should smell bright and nutty. Taste and add a small pinch of salt if needed.
Step 7: Sauce and serve
Spoon the warm almond brown-butter sauce over each piece of trout. Finish with a squeeze of lemon and a tiny pinch of flaky salt if you like.
Serve right away while the skin is crisp and the butter sauce is silky. This is excellent with roasted potatoes, green beans, asparagus, or a simple salad.
Pro Tips
- Dry fish = crisp fish: Patting the trout dry is the simplest way to avoid sticking and get better browning.
- Use a thin flour dusting (optional): Flour helps create a delicate, crisp surface and also protects the fish a bit from over-browning.
- Control the heat: Cook trout hot enough to crisp the skin, then lower the heat for brown butter so it turns nutty instead of bitter.
- Pull the butter at amber: The butter continues browning from residual heat. When it’s deep golden and smells like toasted nuts, take it off the heat.
- Keep the skin crisp: Plate fish skin-side up and sauce mostly over the flesh side (or spoon around) if you want maximum crunch.
Variations
- Whole trout almondine: Use 2 butterflied whole trout (12–14 oz / 340–400 g each). Cook skin-side down 4–6 minutes, then flip and cook 2–4 minutes more, depending on thickness.
- Capers + lemon: Add 1 tbsp drained capers to the brown butter right after the lemon juice for a briny pop.
- Different nuts: Swap sliced almonds for 1/3 cup (35 g) chopped toasted hazelnuts or pecans for a deeper, sweeter nuttiness.
Storage & Make-Ahead
Trout almondine is best eaten right away because the skin loses crispness as it sits. If you have leftovers, refrigerate fish and sauce in separate airtight containers for up to 2 days. Reheat the fish in a skillet over medium heat with a small drizzle of oil, 2–4 minutes, to re-crisp the exterior. Warm the sauce gently in a small pan over low heat just until melted (avoid boiling so the butter doesn’t separate). For make-ahead, you can toast the almonds up to 3 days in advance and store at room temperature in a sealed container.
Nutrition (per serving)
Approximate (using 6 oz trout fillet and all sauce): 500 calories, 35 g protein, 39 g fat, 6 g carbs, 2 g fiber, 450 mg sodium.
