Preheat oven to 350°F (175°C).
In a mixing bowl, cream together the butter, brown sugar, and granulated sugar until smooth.
Beat in the vanilla extract.
In another bowl, whisk together the gluten-free flour, baking soda, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Stir in the oats and chocolate chips.
Drop by rounded tablespoon onto a baking sheet.
Bake for 10-12 minutes or until golden brown.
Let cool on the baking sheet for a few minutes before transferring to a wire rack to cool completely.