
This sheet pan dinner is the kind of weeknight meal that looks like you spent hours in the kitchen but comes together with surprisingly little fuss. Tender trout fillets get blanketed in a vibrant, homemade walnut-basil pesto that roasts right onto the fish, while golden fingerling potatoes and crisp-tender green beans cook alongside on the same pan. Everything here is built from whole, recognizable ingredients — fresh basil, raw walnuts, garlic, lemon juice, and good olive oil — so you know exactly what's going into your food without having to decode a label. That matters a lot when you're avoiding synthetic preservatives and additives that sneak into store-bought sauces and seasoning blends. Making the pesto from scratch in a food processor takes only a couple of minutes and gives you full control over every ingredient that hits the pan. The bright hit of lemon juice in the pesto keeps the flavors lively and balances the richness of the trout beautifully. Cleanup is minimal, the flavors are bold, and this one is absolutely going into the regular rotation.
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Position a rack in the center of the oven and preheat to 425°F (220°C). Line an 18×13-inch rimmed sheet pan with parchment paper or foil.
Toss the halved fingerling potatoes with 2 tablespoons of the olive oil, 1/2 teaspoon of the salt, and 1/4 teaspoon of the pepper directly on the prepared sheet pan. Arrange cut-side down in a single layer. Roast for 15 minutes, until the cut sides begin to turn golden.
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