Preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper.
In a mixing bowl, combine the oats, flour, baking soda, salt, and cinnamon. Whisk until well blended.
In a separate bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.
Beat in the egg and vanilla extract to the butter mixture until fully combined.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Fold in the chopped figs and nuts (if using) until evenly distributed throughout the dough.
Using a spoon or spatula, drop rounded tablespoons of dough onto the prepared baking sheet, ensuring there is enough space between each cookie.
Bake in the preheated oven for 10-12 minutes, or until the edges are golden brown.
Allow the cookies to cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely.