01 - Preheat the oven to 350°F (175°C). Line two baking sheets with parchment paper.
02 - In a medium bowl, whisk together the rolled oats, all-purpose flour, ground cinnamon, baking soda, and salt until evenly distributed.
03 - In a large bowl, beat the softened butter and packed brown sugar together using an electric mixer until creamy and light in color, about 2 minutes.
04 - Add the honey, egg, and vanilla extract to the butter-sugar mixture. Beat until fully combined and smooth.
05 - Gradually add the dry ingredient mixture into the wet mixture, stirring gently until just combined. Avoid overmixing.
06 - Gently fold the finely diced apple and raisins into the dough until evenly distributed throughout.
07 - Drop heaping tablespoons of dough onto the prepared baking sheets, spacing them about 2 inches apart to allow for spreading.
08 - Bake for 11–13 minutes, or until the edges are golden brown and the centers are just set. Do not overbake for a chewier texture.
09 - Let the cookies rest on the baking sheets for 5 minutes, then transfer to a wire cooling rack to cool completely before serving or storing.