Preheat the oven to 350ºF and spray a 9x13-inch baking pan with cooking spray or line the pan with parchment paper. Set aside.
Add the flour, baking powder, and salt to a mixing bowl and whisk the ingredients together.
In a separate large mixing bowl, cream the brown sugar and butter together with an electric mixer or hand mixer on medium speed until light and fluffy.
Drizzle the maple syrup and vanilla into the creamed mixture and mix on low speed until combined.
Add eggs into the mixing bowl until all the eggs are incorporated.
Slowly add the dry ingredients to the wet ingredients until combined.
Fold the chocolate chips into the dough and then transfer the dough to the 9x13-inch pan and spread the dough out with a spatula until evenly distributed.
Bake the bars 350ºF for 20-25 minutes or until slightly golden brown.
Remove from the oven and let the bars cool for 20-30 minutes before cutting into them.