The paper explores the ways in which university-based Teacher Education Departments in Greece have operated to promote changes to their undergraduate curricula. Our research approach views these changes as responses to the policies of the European Union and the Bologna Process for the 'modernisation' of higher education systems across Europe. Data are drawn from qualitative analyses of 18 curricula in two periods of their development, the middle of the 1990s and the late 2000s. The analysis of the study is based on Bernstein's theoretical concepts of classification, framing and meaning orientations, and describes basic types of university curricula regarding content organisation, pedagogical practices of teaching and learning, and knowledge evaluation. The findings reveal that, along with the disciplinary and professional criteria for knowledge recontextualisation, which have traditionally been legitimate in the field of Teacher Education, forms of weakly classified knowledge systematically oriented to problem-solving professional practices and school effectiveness are gradually crystallising and tending to become dominant. We argue that the marked shifts in the pedagogical means of teacher education may run the risk of thinning out teachers' knowledge base and de-professionalising their practices and identities.