Step 1: Cream Butter and Sugars: In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy. This step is crucial for achieving the right texture, ensuring a light and airy base for the cookies.
Step 2: Beat in Eggs and Vanilla: Beat in the eggs one at a time, then stir in the vanilla extract. Ensure each egg is fully incorporated before adding the next. The vanilla extract enhances the overall flavor profile of the cookies.
Step 3: Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, cinnamon, nutmeg, and salt. This ensures that the spices and baking soda are evenly distributed throughout the dry ingredients.
Step 4: Gradually Add Dry Ingredients to Wet Ingredients: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix, as this can result in tough cookies.
Step 5: Stir in Oats and Raisins: Stir in the rolled oats and raisins until evenly distributed throughout the dough. The oats provide the signature texture of oatmeal cookies, while the raisins add a burst of sweetness.
Step 6: Chill the Dough: Cover the dough and chill in the refrigerator for at least 30 minutes. Chilling the dough prevents the cookies from spreading too thin during baking and enhances their chewiness. For best results, chill for up to 2 hours.
Step 7: Preheat Oven and Prepare Baking Sheets: Preheat oven to 375F (190C). Line baking sheets with parchment paper. Parchment paper prevents the cookies from sticking and makes cleanup easier.
Step 8: Drop Dough onto Baking Sheets: Drop rounded tablespoons of dough onto the prepared baking sheets, leaving about 2 inches between each cookie.
Step 9: Bake: Bake for 12-15 minutes, or until the edges are golden brown and the centers are still slightly soft. The baking time may vary depending on the oven, so keep a close watch on the cookies.
Step 10: Cool: Let the cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely. Cooling on the baking sheet allows the cookies to set properly.
Optional Tip: For extra flavor, toast the oats lightly in a dry skillet before adding them to the dough. Alternatively, soak the raisins in warm water for 10 minutes to plump them up before use.