Preheat oven to 180 Deg C.Line a baking tray with parchment paper.In a large mixing bowl,add the butter ,white sugar and brown sugar.Cream together butter and sugar using a whisk until light and fluffy.
Add the vanilla extract and eggs,one at a time until well combined.
In a separate bowl,mix together all purpose flour,baking soda,salt and cinnamon powder.Add this flour mix to the egg mixture in 3 batches ,mixing gently just until combined.( do not over mix.)Finally fold in the oats and the raisins.
Roll the dough into 2" sized balls and place them about 2 inches apart on the prepared baking tray and flatten lightly.Bake for about 10 to 12 minutes or until the edges turn golden.Allow it to cool slightly before transferring to a wire rack to cool completely .Store in an airtight container.