Preparation Combine first 4 ingredients in shallow dish. Moisten trout with cold water and dip in cornmeal mixture, turning to coat. Melt butter with 1 tablespoon oil in large skillet over medium-high heat. Add trout, skin side down, and pan-fry until coating is brown, about 3 minutes. Turn trout over; pan-fry until opaque in center, about 2 minutes. Transfer trout to platter. Add 1 tablespoon oil and lemon juice to skillet, stirring to scrape up browned bits. Add watercress and cook until barely wilted, tossing with pan drippings, about 30 seconds. Season with salt and pepper. Top trout with watercress, garnish with lemon wedges, and serve.
Preparation Combine first 4 ingredients in shallow dish. Moisten trout with cold water and dip in cornmeal mixture, turning to coat. Melt butter with 1 tablespoon oil in large skillet over medium-high heat. Add trout, skin side down, and pan-fry until coating is brown, about 3 minutes. Turn trout over; pan-fry until opaque in center, about 2 minutes. Transfer trout to platter. Add 1 tablespoon oil and lemon juice to skillet, stirring to scrape up browned bits. Add watercress and cook until barely wilted, tossing with pan drippings, about 30 seconds. Season with salt and pepper. Top trout with watercress, garnish with lemon wedges, and serve.