Resurection Pie = any old leftover meat, topped with mash in the manner of shepherds pie.

Fly cemetery = currants&sugar turned into a fruit slice with pastry top&bottom.

Squashed fly biscuit = Garibaldi

Dog in a blanket = sultanas/raisins given the fly cemetery treatment.

Bangers & train smash = sausage & tinned (canned) tomato or spaghetti in tomato sauce.

All these were common names in my upbringing, they tasted none the worse for the strange names.