Prep Your Ingredients. Start by preheating your oven to 350°F and lining a baking sheet with parchment paper.
Mix the Dry Ingredients. Whisk together flour, baking soda, cinnamon, and a pinch of salt.
Cream the Butter and Sugars. In a separate bowl, cream together the butter, brown sugar, and white sugar until fluffy. Beat in the eggs and vanilla.
Combine with Dry Ingredients. Gradually mix the dry ingredients into the wet ingredients, then fold in the oats and raisins.
Scoop and Bake. Drop tablespoon-sized scoops of the cookie dough onto the prepared baking sheet. Bake for 10-12 minutes or until the edges are golden brown.
Cool and Enjoy. Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack.