Instructions

  1. Set oven to 350° (set oven rack to second-lowest position).
  2. Grease an 11 x 7-inch baking pan.
  3. In a large microwave-safe bowl melt the butter.
  4. Whisk in both sugars, vanilla and peanut butter until well combined.
  5. Add in eggs; whisk/mix until completely combined.
  6. In a small bowl mix together the flour, baking powder and salt; add to the butter mixture and mix with a wooden spoon until combined.
  7. Add in chocolate chips or nuts (or use 3/4 cup of both!).
  8. Transfer to the baking pan and spread out with a spoon.
  9. Bake for about 35 minutes, or until the bars test done.