Combine peanut butter, oil, eggs, sugars, and vanilla and mix well. This recipe is so easy you can do that by hand if you’d like to keep your mixer clean 😉

Add the flour, baking powder, and salt and mix to form a thick batter.

Spread mixture into a parchment paper-lined 9 x 13 pan and evenly pour the bag of chocolate chips over the top.

Bake on 350 for five minutes and marbleize with a knife. Return to oven and bake until a toothpick inserted returns clean; about 20-25 minutes.

Slice into squares and enjoy.