Step 1

Preheat the oven to 350 degrees F.

Step 2

Line a 10x15-inch baking sheet with parchment paper.

Step 3

In a large mixing bowl, add the softened butter, the brown sugar, and the granulated sugar and cream together with an electric mixer.

Step 4

Add the eggs, the bananas, and the vanilla extract to the sugar mixture and cream with an electric mixer until it is smooth.

Step 5

Add the flour, the salt, and the baking powder to the banana mixture and mix with an electric mixer until all the ingredients are fully combined.

Step 6

Add 1 1/2 cups of the chocolate chips to the batter and stir until it is gently combined.

Step 7

Evenly spread the batter onto the prepared baking sheet and sprinkle with the remaining chocolate chips.

Step 8

Bake the batter until the edges start to brown and a toothpick inserted in the center comes out clean, about 25-28 minutes.

Step 9

Transfer the baking sheet from the oven and allow the bars to cool.

Step 10

Slice and serve.