Kraft is cutting fat content by one third and salt by 9%. The brand will now contain no artificial colours, flavours or trans-fats and will have 113% more fibre than before.
In a statement, Kraft said: "New recipe Dairylea Lunchables is one example of how Kraft foods is working with consumers to help them make healthy choices more easily." It is still unclear what other products Kraft will extend its healthy changes to.
Dairylea products had been criticised by health food campaigners for the amount of salt in the Lunchables range.
Kraft, along with Kellogg and Pepsi, was rapped last year in consumer research commissioned by Ofcom for its levels of advertising of unhealthy food and drink to children.
Opinion Leader Research from the media regulator investigated views on TV advertising of food and drink high in fat, salt and sugar to children ahead of planned regulation in 2007.