Halibut: Season the halibut with salt and pepper. In a medium saute pan over high heat add the oil. Once heated, add the fish and sear until golden brown. Add butter, thyme, and garlic and baste. Set aside.
Ragout: In a small saucepot combine the butter, fish fume, diced potatoes and simmer over medium heat. Add fennel, tomatoes, olives and basil. Season with salt and pepper, to taste, and add a dash of sherry vinegar. Add the roasted peppers and gently warm. Adjust seasoning, if necessary.
To Plate: In a large bowl place the olive ragout and garnish with the roasted peppers and parsley oil. Place the halibut on top and finish with the scallion.
Recipe courtesy of El Dorado Kitchen