Peel the sweet potatoes, grate them coarsely and put them in a bowl. Whisk the eggs and mix into the sweet potatoes. Quickly mix in the starch. Season with salt, pepper, nutmeg and sugar
Heat 3 tablespoons of oil in a large frying pan. Using a tablespoon, add 2 large, thin Rösti (approx. 14 cm Ø) to each pan. Fry on both sides over medium heat for 6-8 minutes each. Remove the Rösti and keep warm. Do the same with the rest of the sweet potato mixture (or work in a second pan in parallel!)
In the meantime wash the peppers and grate them dry. Wash thyme and rosemary, shake dry. Place the peppers side by side on a baking tray lined with baking paper. Spread the herbs on top. Sprinkle with 1-2 tbsp. olive oil. Grill under the preheated oven grill on the top shelf for about 10 minutes. After 3-4 minutes, remove the tray carefully. Sprinkle the peppers with cheese, put them back into the oven and grill them ready
Arrange 1 Rösti and 3 peppers on plates. Garnish with roasted herbs