If you describe a piece of entertainment such as a book or film as middlebrow, you mean that although it may be interesting and enjoyable, it does not require much thought.
...such middlebrow fare as Poirot, Sherlock Holmes and Jeeves and Wooster.
middlebrow in British English
(ˈmɪdəlˌbraʊ) derogatory
noun
1.
a person with conventional tastes and limited cultural appreciation
adjective also: middlebrowed
2.
of or appealing to middlebrows
middlebrow culture
Derived forms
middlebrowism (ˈmiddleˌbrowism)
noun
middlebrow in American English
(ˈmɪdəlˌbraʊ)
US
noun
1.
a person regarded as having conventional, middle-class tastes or opinions, and as being anti-intellectual or pseudo-intellectual