Place flour, spring onions, potatoes, and baking powder in food processor or large bowl. Knead for 2 minutes. Add a little water if mixture is too dry.
Wrap dough in cling film and allow to rest for 30 minutes. Divide dough into 2 pieces. Roll into rounds of 18-20cm diameter. Combine the 3 oils and brush tops of dough rounds. Spray a non-stick frying pan with oil spray. Cook each dough round for 3 minutes each side, brushing with flavoured oil. When bread is golden remove from pan, cut into slices.
