I wanted to bake some simple cinnamon cookies and having followed this recipe a couple of times before I thought I might be able to adapt it. So I added a quarter of a teaspoon of vanilla extract and half a teaspoon of cinnamon to it. They are a darker colour than my previous bakes using this recipe and look and taste ok. They’re a little bit chewy which is fun. They could definitely take more cinnamon flavouring.