Preheat oven (electric cooker: 180 °C/circulating air: 160 °C/gas: see manufacturer). Wash the rosemary and thyme, dab dry. Pat meat dry. Heat 2 tablespoons of oil in a large frying pan and fry the meat thoroughly for approx. 3 minutes.
Season with salt and pepper. Add rosemary, thyme and butter. Melt the butter and pour over the meat several times. Put the meat, herbs and butter in an ovenproof dish and cook in the hot oven for about 15 minutes.
For the pesto, grate the cheese finely. Wash the coriander and parsley and pluck the leaves. Coarsely chop the nuts. Puree finely with cheese, herbs, 75 ml oil, lemon peel and lemon juice in a tall mixing bowl with a hand blender. Season with 1⁄4 TL salt and pepper. Remove meat from the oven, wrap in foil and let rest for about 8 minutes.