Method
Preheat oven to 350°
Trim the ends from the onion and remove peel. Cut into thick slices
Heat the pan on high heat. Add 2 tbsp butter and lay onions in a single layer
If desired, rinse the fish. Pat dry. Season generously with fresh cracked pepper. If desired, add a little kosher salt
Lay fish steaks on top of onion slices. Add wine and rosemary sprigs. Lower heat slightly. Top with the last of the butter.
Baste the fish with the melted butter and add lemon juice
Carefully put pan in the oven and bake for 10-15 minutes or until a sharp knife easily goes through filet
Carefully remove from oven and baste with juices again. Drizzle with a little bit of Meyer Lemon Olive Oil to tastes.