Ingredients

  • 1 (18 ounce) box dark chocolate cake mix
  • 1 egg
  • 1 (12 ounce) can diet cola
  • 12 cup reduced-fat peanut butter
  • 14 cup sugar
  • 14 cup sugar substitute (like slenda)
  • 14 cup baking cocoa
  • 1 12 tablespoons cornstarch
  • 12 cup cold water
  • 1 tablespoon light butter
  • 12 teaspoon vanilla extract

Method

  • Mix cake mix with egg and diet cola.
  • Mix well.
  • Put into a 9/13 pan and bake a 350 for 30 minutes.
  • Cool slightly.
  • Warm the peanut butter up slightly in the microwave (for like 20-30 sec).
  • Spread warm peanut butter over warm cake.
  • In a saucepan, combine the sugar,slenda,cocoa,and cornstarch.
  • Add water and stir until smooth.
  • Bring to a boil; cook and stir for 1 minute or until thickend.
  • Remove from heat;stir in butter and vanilla until smooth.
  • Spread onto cake right away while frosting is still warm.