These biscuits are now customarily made in simple shapes, but what appears to be the original receipt and picture suggest a pastiche of a church window.
Original Receipt in 'Enterprising Ideas' by Penny Coltman and Jayne Greenwood (1999)Make stained glass window biscuits using pastry strips and boiled sweets. The shape of a window is made on a lined baking tin by criss-crossing strips of pastry. Wet the pastry wherever strips cross or join to hold it. Place a piece of broken sweet in each of the spaces in the 'window*. Bake at 180C until just cooked.

Original illustration from
Enterprising Ideas
by Penny Coltman and Jayne Greenwood (1999)