Chocolate sponge squares with chocolate

Milk Chocolate 40% (Sugar, Cocoa Butter, Cocoa mass, dried skimmed milk, _milk_ fat, Lactose (_Milk_), Emulsifier: _Soya_ Lecithin), Sugar, Pasteurised Free Range Egg, wheatflour (_Gluten_) (with _wheatflour_, Calcium Carbonate, Iron, Niacin, Thiamin), Butter (_Milk_), Dark Chocolate 3% (Cocoa Mass, Sugar, Cocoa Butter, fat reduced cocoa powder, Soya Lecithin), invert Sugar Syrup, Fat Reduced Cocoa powder, Rapeseed Oil, Humectant: Glycerol, Palm oil, Dried Skimmed Milk, dried glucose syrup, White Chocolate (Sugar, Dried Whole Milk, Cocoa Butter, dried Skimmed milk, Emulsifier: Soya Lecithin, Vanilla Flavouring), Salt, Raising Agent: E450, E500; Emulsifier: E471, soya lecithin; Glucose Syrup, Cornflour, Xanthan Gum, Dried Free Range _egg_ White, Colour: Curcumin.