peanut butter brownie close up

Peanut butter brownies

  • Author: Science Chef
  • Prep Time: 30 mins
  • Cook Time: 25 mins
  • Total Time: 55 mins
  • Yield: about 16 portions 1x



  • 60g butter
  • 150g sugar
  • 75g brown sugar
  • 100g milk chocolate (or dark if you prefer it less sweet)
  • 80g cocoa powder (add less for a slightly less bitter brownie and for a more liquid batter)
  • 2 eggs
  • 100g flour
  • 2 tsp baking powder
  • 2 big spoonfuls of peanut butter (at least 30g, or more)


  1. Add the butter, sugars, chocolate and cocoa to a small pan and gently heat until all the chocolate and butter have melted.
  2. Leave to cool down slightly until it’s cool enough to add the eggs without cooking them.
  3. Mix in the eggs and then add the flour and baking powder. Fold it in, but don’t mix too much.
  4. Spread the mix in a square tray (max. 20x20cm), it will be quite stiff due to the cocoa powder. If it’s really too thick, add a tablespoon of water or milk at the time to soften it.
  5. Add the peanut butter on top of the brownie and use a fork or toothpick to spread it out.
  6. Bake in a pre-heated oven at 190C for 25 minutes