Lemon Square Whatta Tops Vanilla Cream Flavor (Cupcakes with Toppings)

Cake: Cake flour, sugar, vegetable oil, fresh eggs, glucose syrup, sorbitol, milk powder, baking powder, iodized salt, emulsifier, preservatives, vanilla flavor Topping/Filling: Vegetable fat, sugar, skimmed milk powder, emulsifier (soya lecithin), artificial flavor, vanillin, white chocolate chips (in some batches) or vanilla crumble