Preheat oven to 350 degrees F (180 degrees C). Line an 8x8 inch baking pan with parchment paper.
In a bowl, cream together the butter, granulated sugar and brown sugar until smooth. Beat in the egg and vanilla extract.
Sift together the flour, baking powder, baking soda and salt. Stir into the creamed mixture by hand using a spatula until well blended. Mix in the molasses and chocolate chips until thoroughly combined
Transfer to prepared pan and press down evenly to make a smooth, even layer. Bake for 20 to 25 minutes in the preheated oven, or until golden and top is firm.
Remove from oven and let cool completely before cutting into squares and serving with a tall glass of milk! YUMMY!!!