Line a 9 x 13 inch baking dish with parchment paper or lightly coat with cooking spray.
Cream sugars, butter and peanut butter together in a large mixing bowl.
Beat in the eggs and vanilla just until combined.
In a small bowl, combine the flour, baking powder and salt.
Stir the flour mixture into the creamed mixture just until combined. Do not over mix.
Stir in the peanut butter and chocolate chips.
Spread dough into the prepared baking dish and bake for 28-33 minutes or until an inserted toothpick comes out with a few moist crumbs. Let cool before cutting into squares.