Filet of freshest haddock, skin on. If large, cut into two pieces. Drizzle olive oil on the bottom of an oval pan and place fish on top, skin side down. Top with panko or bread crumbs, drizzle more olive oil, add a few pats of butter. Place thin slices of lemon on top.
Preheat oven to 200 degrees. Cook at 200 degrees for 45 minutes. Turn oven off until ready to serve.
Before serving, remove the lemon slices and set aside. Turn oven to broil. Place fish under the broiler on highest rack until golden brown on top.
Use a spatula to serve, keeping fish together and leaving skin in the pan. Garnish with lemon slices. Great with rice and peas.