Preheat oven to 350F.
In a medium bowl, whisk together flour, baking soda, baking powder and salt.
In a large bowl, cream butter and sugars. Beat in eggs one at a time, along with the vanilla extract. Gradually beat in flour mixture at a low speed, stopping when just combined. Stir in chocolate chunks.
Drop by rounded tablespoons onto a parchment lined baking sheet and bake at 350F for 12-15 minutes, until the cookies are lightly browned at the edges.
Allow to cool on the baking sheet for about 5 minutes before transferring to a wire rack to cool completely.
Store in an airtight container.
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