Preparation Preheat oven to 400°F. Melt butter with 2 tablespoons oil in large skillet over medium-high heat. Add mushrooms and sauté until beginning to color. Stir in garlic and parsley. Add wine; simmer until almost evaporated, scraping up browned bits in skillet, about 1 minute. Remove from heat. Stir in lemon peel and lemon juice. Season with salt and pepper. Brush 13x9x2-inch glass baking dish with 1 tablespoon oil. Place cod, skin side down, in baking dish. Sprinkle with salt and pepper. Cover with mushroom mixture. Sprinkle with breadcrumbs and Parmesan; drizzle with remaining 1 tablespoon oil. Bake until fish is opaque in center, about 20 minutes.
Preparation Preheat oven to 400°F. Melt butter with 2 tablespoons oil in large skillet over medium-high heat. Add mushrooms and sauté until beginning to color. Stir in garlic and parsley. Add wine; simmer until almost evaporated, scraping up browned bits in skillet, about 1 minute. Remove from heat. Stir in lemon peel and lemon juice. Season with salt and pepper. Brush 13x9x2-inch glass baking dish with 1 tablespoon oil. Place cod, skin side down, in baking dish. Sprinkle with salt and pepper. Cover with mushroom mixture. Sprinkle with breadcrumbs and Parmesan; drizzle with remaining 1 tablespoon oil. Bake until fish is opaque in center, about 20 minutes.