Melt butter, honey and salt in a pot at low heat. In the meantime, finely chop the apricots, figs, cherries and hazelnuts and add to the butter-honey mixture. Add lemon juice, oat and spelt flakes and cook over low heat stirring for about 5 minutes, then cook over high heat for another 2 minutes.
Place on a baking tray lined with baking paper and press down evenly with your hands to form a rectangle (20 x 30 cm). Fold the aluminium foil several times and place it firmly around the baking tray. In a preheated oven (electric cooker: 175 °C/ circulating air: 150 °C/ gas: see
manufacturer) bake for about 25 minutes. Cover with aluminium foil after 15 minutes.
Remove from the oven, place on a cake rack and allow to cool. Cut the rectangle in half lengthwise once. Cut strips into 10 bars (approx. 3 cm x 10 cm).
Coarsely chop the chocolate coating and melt it over a warm water bath. Leave to cool a little. Carefully remove the bar from the baking paper, brush the underside with a thin layer of couverture. Allow to drip off a little. Place on baking paper and let dry.