1. Place all caramel ingredients in a saucepan.
  2. Stir and bring to boil, simmer over medium heat for 5 minutes.
  3. Leave aside and allow to cool.
  4. Preheat oven to 180C.
  5. Combine all dry ingredients in a separate bowl.
  6. Add wet ingredients to dry ingredients and mix well.
  7. Pour into lined brownie pan, smooth mixture with spoon, drizzle over as little or as much of the peanut caramel as desired(saving some for serving), using a fork swirl and marble the caramel through the brownie mixture.
  8. Allow to cool before slicing, serve with any leftover peanut butter caramel!