Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.

Cream together softened butter, brown sugar, and granulated sugar until smooth and creamy.

Incorporate the eggs one at a time, then add the vanilla extract and mix until combined.

In a separate bowl, whisk together flour, baking powder, baking soda, and salt. Slowly combine with wet ingredients.

Fold in the chocolate chips until evenly distributed throughout the dough.

Spread the dough into the prepared baking pan, smoothing the top evenly.

Bake for 25-30 minutes until edges are golden-brown and center is set but slightly soft.

Allow to cool in the pan for 10-15 minutes before cutting into squares.