Preheat oven to 350 degrees F. Grease or line a 9x13" baking pan, set aside. In a small mixing bowl combine the flour, baking powder, and salt, stir to combine and set aside.
In a large bowl combine melted butter, sugars, eggs, and vanilla. Whisk well to combine.
Add in the dry ingredients and mix until combined. Fold in the chocolate chips, transfer into the prepared baking pan. If desired, top with extra chocolate chips before baking.
Bake at 350 degrees for 30-35 minutes or until a toothpick inserted comes out clean. Remove from the oven and allow to cool completely before slicing.
Notes
*Set aside a handful of chocolate chips to sprinkle on top*Bars will be fudgy, allow to cool completely before slicing for best results. *A sprinkle of flaky salt on top adds the perfect touch.