Ingredients
3/4 cup dry Italian-style breadcrumbs
1/2 cup plus 3 tablespoons crushed toasted hazelnuts
8 tablespoons chopped fresh Italian parsley
4 whole boneless trout
4 tablespoons olive oil
1/2 cup (1 stick) butter
1/4 cup fresh lemon juice
2 teaspoons grated lemon peel

Directions
To crush the toasted nuts, seal them in a plastic bag, and pound with a rolling pin.
Preheat oven to 350*F. Oil large rimmed baking sheet. Combine breadcrumbs, 1/2cup hazelnuts and 2 tablespoons parsley in medium bowl. Open trout and sprinkle flesh side with salt and pepper. Press hazelnut mixture into flesh side of butterflied fish.

 Heat 1 tablespoon oil in heavy large nonstick skillet over high heat. Add 1 whole trout, hazelnut side down. Saute until golden, about 2 minutes. Transfer trout, hazelnut side up, to prepared baking sheet. Repeat with remaining olive oil and trout. Transfer trout to oven and roast until opaque in center, about 5 minutes.

Meanwhile, melt butter in same skillet over medium heat and allow to brown. Add 3 tablespoons crushed hazelnuts, 6 tablespoons parsley, lemon juice and 1 teaspoon lemon peel; stir to combine. Season sauce with salt and pepper; pour over fish. Sprinkle with remaining 1 teaspoon lemon peel and serve immediately.  Makes 4 servings.

Source:  Bon Appétit