In addition to ordering mock burgers, fries and shakes with food boxes and napkins provided by McDonalds, the youngsters at Croft Park Nursery were also taken on a field trip to a real outlet in Airdrie.
The timing infuriated Member of Parliament Shona Robson, as it came just days before the Scottish Executive launched a healthy eating initiative aimed at children under five.
"At a time when we are trying to work on children's health it seems utterly ridiculous that children would be encouraged to use McDonalds," she said. "We have a real obesity crisis on our hands and we need to try and get them to eat a healthier diet."
But nursery manager Jillian McCullagh said that was the whole idea.
"We wanted to show them that there are now healthier options available, to let the children see that when they go to McDonalds that there is food healthier than burgers and chips," McCullagh said.