Shoppers have been advised by the Food Standard Agency not to eat Cadbury Dairy Milk Cheesecake and Dairy Milk Caramel Cheesecake puddings, and to instead return them.
The recall is because of the 'possible presence of listeria monocytogenes' - which can cause listeriosis and lead to sepsis, meningitis and encephalitis - inflammation of the brain.
Normally, symptoms of listeriosis include a high temperature, muscle ache, chills, nausea and diarrhoea. In rarer cases, it can lead to complications such as meningitis and other serious infections.
When listeriosis occurs in those at higher-risk, such as the elderly, frail and pregnant women - it can be fatal.
A spokesperson for Müller, which produces the desserts under license from Cadbury, said: 'Müller UK is recalling Cadbury Dairy Milk Cheesecake and Cadbury Dairy Milk Caramel Cheesecake dessert products as a precaution due to the possible presence of Listeria monocytogenes in the products.
'Müller produces these products under license from Cadbury and has stressed that this does not impact any other products it produces for Cadbury; or Cadbury Cheesecake variants in the UK or other markets.'
In a recall notice issued to supermarkets, they advise, We would stress that this is an isolated incident and an extensive investigation is being carried out.
'We apologise for any inconvenience this has caused and thank you for your cooperation in this matter.'
One listener told us she had one yesterday and wondered why she was feeling poorly.