I believe my below suggestion would at least cut the preparation time by 50%. 1) Load the 2 slices of wholemeal bread into the toaster 2) Using a small plate, place 1 portion of cucumber, tomato and shredded chicken with mayonnaise onto the plate 3) By then the toast would pop up from the toaster. 4) Apply butter to bread 5) Slide 1 portion of cucumber, tomato and shredded chicken with mayonnaise from plate to bread 6) Slice bread in half 7) Pack it.