Preheat the oven to 350 and line a 9×13 pan with parchment paper.
Sift together the flour, baking powder, and salt in a large bowl and set aside.
Add the butter and sugar to a large mixing bowl and beat on high until the mixture is creamy. Add the eggs and vanilla then continue to beat on high until the mixture is fluffy and is the color of butter. Add chocolate chips and stir by hand until incorporated.
Spread the mixture into the prepared pan and bake for 22-25 minutes. I like mine a little underdone, so I usually aim for the shorter time. Remove from the oven and allow to cool before slicing and serving.