Cut bread slices into very fine pieces. Chop onions into small pieces and chillies lengthwise. Heat oil in a broad frying pan. Add seasonings, chillies and then onion. Fry till onions change its color. Pour water with turmeric powder, lemon juice and salt. WHen it starts boiling add rawa and mix for a minute or two. Put bread pieces to that and fry in medium flame till upma becomes very hot. Garnish with coconut, coriander leaves and cashewnuts. Serve hot.