Beat the softened butter with both sugars until light and fluffy.
Add the egg and vanilla extract, mixing until fully combined.
In a separate bowl, whisk together the flour, baking soda, and salt.
Gradually add the dry mix to the wet ingredients, stirring just until combined.
Fold in the chocolate chips.
Scoop about 1½ tablespoons of dough per cookie onto an ungreased baking sheet.
Bake in a preheated oven at 350°F (175°C) for 8–10 minutes.
Let the cookies rest for 5 minutes on the baking sheet before transferring to a cooling rack.