Preheat the oven to 375°F.
In a mixing bowl, cream together the butter, granulated sugar, and brown sugar until smooth and well combined.
Add the egg and vanilla extract, and continue mixing until the mixture is light in color and creamy.
In a separate bowl, combine the dry ingredients: flour, baking soda, baking powder, and salt. Gradually add these dry ingredients to the wet ingredients, mixing until fully incorporated.
Gently fold in the chocolate chips.
Portion the dough into 1/2 cup portions. Roll each portion into a ball, then break the ball in half and press the two halves together, leaving the rough edges exposed. Place 6 cookie dough balls onto each cookie sheet. If desired, add extra chocolate chips on top for decoration.
Bake the cookies for 12-15 minutes, or until they are golden brown around the edges.
Allow the cookies to cool on the baking sheet for 20 minutes before either serving or transferring them to a wire rack to cool completely.