Preheat your oven to 300 degrees. Add parchment paper to a sheet pan.
Add the oats to a medium-sized bowl. If you are adding nuts, add them to the oats. Set aside.
Measure and add sunflower oil, honey, brown sugar, vanilla, kosher salt, and cinnamon to a small saucepan. Heat at medium-low until the sugar is dissolved. Let cool for a couple of minutes.
Add the "sauce" to the oats and fold with a spatula to combine.
Transfer the oat mixture to the sheet pan and spread it out in one level layer.
Bake at 300 degrees for 20 minutes. Check the progress. It will not be toasty looking but will look like it has baked. If it looks toasty, it may have baked too long. Leave in the oven 10 more minutes if needed. I bake mine for 30 minutes.
Once out of the oven, transfer to a bowl. Add the raisins or other dried fruit and gently combine. Let cool in the bowl for about 2 hours. Transfer to a container or plastic bag and store in the pantry for up to 2 weeks. Enjoy!