01 - Preheat oven to 350°F. Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the flour, baking soda, salt, cinnamon, nutmeg, and allspice until evenly blended.
03 - In a large bowl, beat the softened butter with the brown sugar and granulated sugar using an electric mixer until light and creamy, about 2 to 3 minutes.
04 - Beat in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until just combined. Avoid overmixing.
06 - Gently fold in the rolled oats, diced apple, and raisins using a spatula until evenly distributed throughout the dough.
07 - Drop tablespoon-sized mounds of dough onto the prepared baking sheets, spacing them about 2 inches apart to allow for spreading.
08 - Bake for 10 to 12 minutes, or until the edges are golden brown and the centers appear set.
09 - Allow cookies to cool on the baking sheets for 5 minutes, then transfer to a wire rack to cool completely before serving or storing.