What British biscuit has a heart-shaped jam window?

What British biscuit has a heart-shaped jam window? Jammie Dodgers do. These sandwich biscuits pair two shortcake biscuits with a raspberry- or strawberry-flavoured jam filling, traditionally visible through a cut-out in the top biscuit.

The biscuit was introduced in the United Kingdom in 1960. Production began at the Co-operative Society’s Crumpsall Biscuit Works before moving to Burton’s factory at Llantarnam. The brand name comes from Roger the Dodger, a character in the British comic The Beano.

A useful comparison is the Linzer biscuit: Jammie Dodgers are a commercial British example of that broader jam-sandwich style, which descends from the Linzer torte tradition. They are not the same as Custard Creams, Rich Teas or Digestives, which do not have the characteristic jam-filled window. Similar biscuits exist elsewhere, including New Zealand Shrewsbury biscuits and India’s Jim Jam biscuits.

The heart shape is familiar, but the exact cut-out can vary by product or regional imitation. Jammie Dodgers have also appeared in Doctor Who, helping make the biscuit recognizable beyond the tea table.