For the onion scapes pesto: Blend together the oil, walnuts and onions scapes in a blender. Add salt and pepper to taste.
For the sauteed greens: Pour the oil into a pot and sweat the onions over medium-low heat. Wilt in the greens, stir well, and then season with salt and pepper.
For the fish: Heat a stainless steel pan over medium-high heat. Add the butter and oil, and then place the fish upside-down into the hot pan. Roast over medium-low heat until the fish has a nice golden brown color on the bottom side. Add the beets and roast alongside the fish, turning, until colored on all sides. Season with salt and pepper.
Plate the sauteed greens and the roasted beets. Flip the fish fillet over and place on top, garnished with fresh herbs. Pour over the leftover fat from the pan. Finish with a nice spoon of the pesto on top of the fish. Enjoy the meal with a nice glass of beer or a nice cold rose, such as Weingut Michlits or Riesling.
Cook's Note: Save the remaining pesto for other recipes, or to top pizza.
This recipe was provided by a chef, restaurant or culinary professional and may have been scaled down from a bulk recipe. The Food Network Kitchens chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.