It added that the burgers were not initially withdrawn but the board had "reviewed its position in light of more recent media coverage" and began taking frozen burgers from school meals' menus from Wednesday.
The then-prime minister's drive to contract out public-sector tasks to the private sector laid the foundations for firms taking over such services as school and hospital meals, buildings maintenance and even staff training.
So ConAgra revived its Banquet frozen food brand by reformulating the meals to make them more nutritious while also taking out costs to keep the price affordable.
The committee was taking evidence on the Scottish government's passported benefits consultation , covering benefits such as free school meals and blue badge parking and how they will continue to operate in Scotland after changes are made to the UK benefit system.