Nineteenth-Century Religion and Literature: an introduction (2007) by Mark Knight and Emma Mason is a recommendable read if you are interested in 19th century British literature and its contexts... with caveats.
The first half (chapters on Dissent, Unitarianism, and the Oxford movement are a very competent summary of trends and phenomenons that aren't easy to describe, and in that way I wholeheartedly recommend to anyone interested in understanding the religious and socio-religious controversies that underlie so much of Victorian Literature. It covers the different eras of dissent, the relationships between Enthusiasm, Presbiterianism, Methodism, Unitarianism, Christian Socialism, the high church/low church/broad church distinctions, the role of industrialization, colonialism and development of the natural sciences in theological debates... it is very complete.
The second half (chapters on Evangelicalism, Secularization, and Catholicism) is... not nearly as good. It is ironic/interesting that what would or should be the easiest part to write is the one the authors seem to have the most difficulty with.
Most of the chapter on Evangelicalism is dedicated To Dickens and Collins' portrayal of it in Bleak House and The Moonstone. I can understand including some perspective of how broad church people regarded Evangelicals, but making it the bulk of the chapter (and then ending with Eliot as a rejection of an Evangelical upbringing) is too biased and not particularly useful if you want to understand Evangelicalism itself and it's authors. I myself am not a sympathizer of Victorian British Evangelicalism by any means, and yet... the missed opportunity to talk about Jane Eyre and The Tenant of Wildfell Hall in depth is felt.
It's not that the chapters are devoid of interest; the discussion around secularization touching on A Christmas Carol is very interesting, and so is the discussion of the influence of Catholicism and sacramentality in decadent authors such as Oscar Wilde. But they do feel more like poorly stringed article topics than the sort of systematic explanation one expects from an Introduction.