Mate brought round five eggs for dessert (7)
I believe the answer is:
pavlova
'dessert' is the definition.
(I know that Pavlova is a dessert)
'mate brought round five eggs' is the wordplay.
'mate' becomes 'pal' (I've seen this before).
'brought round' means one lot of letters goes inside another.
'five' becomes 'V' (Roman numeral).
'eggs' becomes 'ova' (term for egg cells).
'pal' placed around 'v' is 'pavl'.
'pavl'+'ova'='PAVLOVA'
'for' acts as a link.
(Other definitions for pavlova that I've seen before include "Surname of ballerina" , "Sweet - dancer" , "Meringue dish" , "Meringue dessert" , "Sweet dish named after a ballerina" .)