Butter roughly dice, with flour, sugar, egg and orange baking to a smooth dough knead. Knead crunchy muesli into it. Cover and chill for about 30 minutes. Then roll out to a rectangle (approx. 18 x 26 cm) on a floured work surface, approx. 1 cm thick. Cut approx. 8 cm long and 1.2 cm wide sticks. Place on a baking tray covered with baking paper.
Bake in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 18-20 minutes. Remove and let cool down. In the meantime, roughly chop the chocolate coating and melt approx. 2/3 of the chocolate coating in a hot water bath. Remove and stir in the remaining chocolate coating until it has melted completely. Dip the crunchy sticks halfway into the couverture and let them drip off. Place on baking paper, sprinkle with pistachios and leave to dry
Waiting time approx. 30 minutes