Muffin (7)
'muffin' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for crumpet that I've seen before include "Breakfast" , "Thick flat cake, eaten toasted" , "teatime treat!" , "Tea cake" , "Thick soft cake eaten toasted and buttered" .)
(Other definitions for cupcake that I've seen before include "Iced bun" , "Small baked item" , "Small iced delicacy" , "Iced fancy" .)