Clean the pepperoni, cut lengthwise, remove seeds, wash and finely dice. Clean and wash spring onions and cut into thin rings. Wash the coriander, shake dry and chop coarsely
Fry the meat in 2 portions in a large hot pan without fat while turning until crumbly. Add coconut milk. Stir in 2 tsp. curry, pepperoni, spring onions and coriander. Season to taste with salt, pepper and sugar. Divide into an oven dish (approx. 15 x 25 cm).
Preheat oven (electric cooker: 200 °C/circulating air: 180 °C/gas: see manufacturer). Peel and wash potatoes and cut or slice them into thin slices. Place them in the curry chopper vertically, close together. Brush the potatoes with oil. Season with salt and pepper and bake in the hot oven on the second rack from below for about 50 minutes, covering with foil after about 40 minutes if necessary.
Cut sweet potatoes with a super sharp chef's knife. Alternatively use a V-slicer or a mandolin