For the Easy Sticky Toffee Pudding, whole milk is required. I generally have skimmed milk at home, can the whole milk be substituted with skim milk along with some extra butter?
Nigella's Easy Sticky Toffee Pudding (from NIGELLA BITES) is a self-saucing pudding where the liquid sauce is poured over the top of the sponge batter before baking and comes out on the bottom of the sponge as a thickened sauce after baking. It is a quick and easy version of the traditional Sticky Toffee Pudding.
The sponge batter needs to have a soft consistency, so it uses quite a high proportion of milk. Whole milk is preferred as it has a slightly higher fat content. However, as the milk and melted butter are whisked with an egg before being added to the dry ingredients, we suspect that you could use skimmed milk and add some extra butter. To replace the fat of whole milk you would need to add an extra 5g (1 teaspoon) of butter. We would also mention that as we have not tried the pudding with this combination, we are unable to guarantee the results.