Preheat the Oven:Preheat your oven to 350°F (175°C) and line your baking sheets with parchment paper or silicone baking mats. This ensures the cookies don’t stick and bake evenly.
Cream the Butter and Sugars:In a large mixing bowl, beat the softened butter, brown sugar, and granulated sugar together until creamy. This process takes about 2-3 minutes and helps create a smooth texture for your cookies.
Add Eggs and Vanilla:Crack in the eggs one at a time, beating well after each addition. Stir in the vanilla extract for added flavor.
Combine Dry Ingredients:In a separate bowl, whisk together the all-purpose flour, baking soda, ground cinnamon, and salt. Gradually add this mixture to the wet ingredients and mix until just combined.
Fold in Oats and Raisins:Stir in the rolled oats and raisins using a spatula or wooden spoon. Make sure the ingredients are evenly distributed.
Scoop the Dough:Using a tablespoon or cookie scoop, drop rounded balls of dough onto the prepared baking sheets. Space them about 2 inches apart to allow room for spreading.
Bake:Place the baking sheets in the preheated oven and bake for 10-12 minutes, or until the edges are lightly golden. The centers may look slightly underbaked—this ensures a chewy texture.
Cool:Remove the cookies from the oven and let them cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.