Thin biscuit (5)
(Other definitions for brown that I've seen before include "cook to a rich colour?" , "Rugby hero" , "It is used for wrapping" , "Chocolate, perhaps" , "Colour (of the PM?)" .)
(Other definitions for beige that I've seen before include "Light brown" , "Fawn or buff" , "Shade of brown" , "Pale sandy fawn colour" , "Pale brown" .)
(Other definitions for brain that I've seen before include "Seat of the intellect" , "to get hit over the head" , "It's in the skull" , "Intellectual ability" , "Organ of the intellect" .)
'thin biscuit' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for wafer that I've seen before include "Ice-cream biscuit" , "A very thin plain biscuit" , "Host's" , "Disc of bread" , "Ice cream's biscuit" .)
(Other definitions for flour that I've seen before include "Ground and sifted cereal grain meal" , "Powder for cooking" , "White powder" , "It;s made from grinding cereal grain" , "Cake ingredient" .)
(Other definitions for scone that I've seen before include "Small plain cake and Scottish town" , "Perth's settlement" , "Scottish location" , "Unsweetened cake" , "Savoury cake" .)