Preheat the oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a mixing bowl, cream butter, brown sugar, and granulated sugar until light and fluffy.
Add eggs, vanilla extract, and maple syrup. Mix until combined.
In a separate bowl, whisk together flour, baking soda, cinnamon, and salt.
Add dry ingredients to the wet mixture and mix until just combined.
Fold in oats, chocolate chips, and pecans using a spatula.
Scoop 2 tablespoons of dough per cookie onto the prepared baking sheet, spacing evenly.
Bake for 10–12 minutes, until edges are golden and centers are soft.
Cool on the baking sheet for 5 minutes, then move to a cooling rack to finish cooling.