Add the butter and sugars to a bowl and beat until creamy
Add in the egg, and beat again. If using the vanilla and cinnamon, add it in now
Add in the plain flour, oats, baking powder, bicarbonate of soda, and salt and beat until a cookie dough is formed
Add in the raisins and beat until they're distributed well
Weigh the cookies out into ten cookie dough balls - they're about 85g each! (Or you can do them smaller at about 60g, or even bigger at 120g)
Roll your cookie dough into balls (don't roll it too tightly as this can cause problems with the cookie spreading) and put your cookie dough in the freezer for at least 30 minutes, or in the fridge for an hour or so
Whilst the cookie dough is chilling, preheat your oven to 200ºc/180ºc fan. If your oven runs hot, go for 160C-170c.
Take the cookies out of the freezer/fridge and put onto a lined baking tray. I put five cookies per tray
Bake the cookies in the oven for 10-12 minutes.
Once baked, leave them to cool on the tray for at least 30 minutes, as they will continue to bake whilst cooling!
ENJOY!
Notes
These are best eaten on the day of baking, but can be revived by microwaving for 15-30 seconds, or putting into a hot oven for 2-3 minutes!
You can squish the cookie down to about 2-3cm so that the cookie is flatter!
If your cookie stays as a ball, you have either rolled the cookie ball too tightly or over mixed the mixture! Flatten as it's cooling on the tray and it should be okay!
You can freeze the raw cookie dough easily for up to three months, and bake from frozen if you don't want to bake the entire batch!
If you are baking straight from frozen after some time, I usually bake them for 12-14 minutes, at the same temp, but an extra couple minutes won't hurt!
Once baked, these will last for 4-5+ days!
If you can't access one of the sugars, use all of the other one - i.e. all granulated, or all light brown sugar. Using other sugars can change the texture.