This weeks recipe was based on one from the Hairy Bikers European Baking book and was a savoury onion muffin. The originals were topped with poppy seeds but I didn't have any of those so I made a few variations, topping some with onion seeds, some with grated cheese, and others weren't topped but had some chilli cheese mixed into the muffin batter before cooking.

I used red onions and one thing I noticed was that they turned green after cooking. The recipe contained baking soda, which is alkaline, so it is likely that this reacted with the anthocyanins in the onion to turn them green.