Preheat oven to 350℉. Line a baking sheet (also known as cookie sheets) with parchment paper.
In a large bowl, combine melted butter, granulated sugar and brown sugar.
Add egg and vanilla extract. Whisk until smooth.
Add flour, cinnamon, nutmeg, espresso, baking soda and salt. Fold with a spatula until just combined.
Fold in oats, chocolate chips and raisins until just combined.
Scoop with a 1/4 cup cookie scoop and place on the baking sheet 2 inches apart.
Bake for 10-12 minutes or until the center looks dry.
Let the cookies cool on a baking sheet or wire rack before storing in a container.