Peel and finely dice the onions and garlic. Cut dried tomatoes into smaller pieces. Halve chillies lengthwise, remove seeds and cut into small pieces. Heat 1 tablespoon of oil in a pan. Fry the onions, garlic and chilli in it.
Sprinkle with sugar and let it caramelize for about 5 minutes at medium heat. Chop the tomatoes in the tin with a long knife. Deglaze onions with tomatoes, stir in dried tomatoes.
Season with salt. Bring to the boil and cook over medium heat for about 15 minutes. Meanwhile cook the noodles in plenty of boiling salted water for about 8 minutes. Heat 1 tablespoon of oil in a frying pan and fry the prawns for about 4 minutes on both sides.
Deglaze with lime juice and remove. Wash the coriander, dab dry and chop finely, except for a little to garnish. Stir the coriander into the sauce and season with salt, pepper and sugar.
Drain the pasta and let it drain. Arrange noodles, sauce and prawns on plates. Serve garnished with coriander.