How many movies have Bart van Leemputten and Hans Bourlon collaborated on?

They have worked on 11 movies together! Their first movie together was Plop and the Gnome Treasure (1999) while their highest rated movie together was Plop en de Kabouter Paashaas (2010). They have not worked together since K3: Animal Hotel (2014). They are most known for their family films together.