Ingredients

The following ingredients have 4 Servings
  • 1 cup creamy peanut butter
  • 4 Tablespoons salted butter
  • 3 Tablespoons half and half
  • 1½ cups powdered sugar (sifted)
  • 15.25 ounce box brownie mix (prepared according to the box instructions)
  • 1 cup semi-sweet chocolate chips

Instruction

  • Preheat the oven to 350 degrees Fahrenheit and prepare a 9x13 inch baking pan by lining it with parchment paper and lightly spraying the paper with cooking spray.
  • Place the creamy peanut butter and salted butter in a medium sized microwavable bowl and microwave for 30-45 seconds or until the butter has melted.
  • Stir the two ingredients together until completely combined.
  • Pour in the half and half and stir.
  • Gradually stir in the powdered sugar until completely incorporated. The mixture should end up with a consistency similar to a soft cookie dough.
  • Once the peanut butter mixture is finished, set the bowl aside while you make the brownie batter.
  • In a large bowl, prepare the brownie batter according to the box instructions.
  • Fold in the semi-sweet chocolate chips and stir to combine.
  • Evenly drop spoonfuls of brownie batter and the peanut butter mixture into the pan, making sure to alternate until you have covered the bottom of the pan.
  • Use a spoon or knife to gently combine the mixtures together to form a marbled pattern. Do not overmix or you will lose the marbling effect.
  • Bake in the oven for 35-40 minutes or until the brownie edges are baked and the center has set.
  • Allow to cool completely, or for about 30 minutes to 1 hour, before cutting and serving.