I went to the lake cabin for the weekend for a few days of playing on the lake, hanging out with family and friends, dining and cocktailing.  I had good intentions of sharing this unbelievable Chocolate Fudge Peanut Butter Crunch Cake before I left, but instead, let it be a welcome back and way to get you through your Monday after vacation.

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

I made this cake for a friend’s birthday party and I loved having an excuse to make a cake that is so indulgent.  I chose to place the filling inside and on top of the cake, but not to coat the sides of the cake so that the fudge sauce running down this Chocolate Fudge Peanut Butter Crunch Cake is extra dramatic.

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

If you know me at all, you know that I have a major thing for texture and particularly that I want some crunch in whatever I am eating.  To achieve the necessary crunch factor in this cake, I incorporated crispy rice cereal into the peanut butter filling.  The subtle crunch with the thick, smooth peanut butter filling was perfection.  The chocolate cake for this recipe is based off a recipe from Martha Stewart and it is such a lovely and rich chocolate cake.  I think it will be my new go-to chocolate cake recipe for future cakes and cupcakes.

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

We went all out at the birthday party and served this Chocolate Fudge Peanut Butter Cake with vanilla ice cream, but it is perfectly delectable all on it’s own.

*Recipe note:  Plan to serve this cake soon after it is assembled so that the crispy rice cereal stays nice and crunchy.  

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Prep Time: 1 hour

Cook Time: 30 minutes

Total Time: 1 hour

Dense chocolate cake filled and topped with fluffy, crunchy peanut butter frosting and drizzled with thick fudge sauce

Ingredients

    For the cake:
  • 2 cups flour
  • 2 cups sugar
  • 1 cup unsweetened cocoa powder
  • 2 tsp baking soda
  • 1 tsp baking powder
  • 1 tsp salt
  • 1 cup buttermilk
  • 1 cup warm water
  • 1/2 cup canola oil
  • 2 eggs
  • 1 1/2 tsp vanilla
  • For the peanut butter crunch filling
  • 10 Tbsp unsalted butter, room temperature
  • 3/4 cup creamy peanut butter
  • 2 cups powdered sugar
  • 1/4 cup milk
  • 1 Tbsp vanilla
  • 3/4 cup crispy rice cereal
  • For the chocolate fudge topping
  • 3/4 cup milk chocolate chips
  • 3/4 cup semi sweet chocolate chips
  • 1 Tbsp light corn syrup
  • 1/2 cup half and half, room temperature

Instructions

    For the cake:
  1. Preheat oven to 350 degrees.
  2. Grease two 9-inch round cake pans and line the bottoms with parchment paper.
  3. In a large bowl, combine flour, sugar, baking soda, baking powder and salt and mix.
  4. Add buttermilk, water, oil, eggs and vanilla and mix until well incorporated.
  5. Pour batter evenly into two prepared pans and bake for ~30 minutes or until a toothpick inserted into the center of the cakes comes out clean.
  6. Cool completely before assembling.
  7. For the peanut butter crunch filling:
  8. In a medium bowl, use an electric mixer to beat butter and peanut butter together until smooth.
  9. Add powdered sugar and half of milk and mix.
  10. Add remaining powdered sugar, milk and vanilla and mix until smooth.
  11. Mix in cereal.
  12. For the chocolate fudge topping
  13. Put chocolate chips into a small, microwave-safe bowl. Heat in 30 second increments until chocolate is melted.
  14. Add corn syrup and whisk to combine.
  15. Whisk in half and half until smooth.
  16. Place into refrigerator to thicken.
  17. To assemble
  18. Place one of cooled cakes onto serving platter.
  19. Top with half of peanut butter crunch mixture and spread evenly over cake.
  20. Top with other cake. Spread remaining peanut butter crunch onto top of second cake.
  21. Once chocolate topping has thickened by cooling to a hot fudge consistency, pour over top of cake allowing it to drip down the sides.
  22. Serve immediately.
  23. Chocolate cake recipe adapted from Martha Stewart

bake cakes and allow to cool completely, then top one cake with 1/2 of peanut butter crunch filling

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

spread evenly, then top with other cake and remaining peanut butter crunch

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

pour chocolate fudge topping over the top of the cake and garnish with chopped peanut butter cups

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

Chocolate Fudge Peanut Butter Crunch Cake {Satisfy My Sweet Tooth}

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11 Comments ( Reply )

  1. emily (a nutritionist eats)
    Jul 08, 2013 @ 2:06 pm

    Stunning! OMG!

    Reply

  2. Luv What You Do
    Jul 08, 2013 @ 5:46 pm

    That cake is stunning! i love that you dripped the chocolate all over the top of it!

    Reply

    • Mercedes
      Jul 09, 2013 @ 8:55 am

      Thanks Jennifer! It was really fun to make and it’s always nice when something turns out the way you envision!

      Reply

  3. Laura (Tutti Dolci)
    Jul 08, 2013 @ 6:37 pm

    What an incredible cake! I don’t know what I like more, the peanut butter crunch or fudge topping. Either way, I’m drooling!

    Reply

    • Mercedes
      Jul 09, 2013 @ 8:56 am

      Thanks Laura! It’s hard to choose a favorite between crunchy peanut butter filling and ooey gooey fudge topping! Good thing with this cake, we don’t have to choose!

      Reply

  4. Cassie | Bake Your Day
    Jul 08, 2013 @ 7:30 pm

    OH my goodness, that drippy chocolate. Totally drooling!

    Reply

    • Mercedes
      Jul 09, 2013 @ 8:56 am

      Thanks Cassie! I hope you had a good 4th weekend!

      Reply

  5. Alyssa
    Jul 09, 2013 @ 7:54 am

    This. Looks. Incredible. And chocolate and peanut butter is a favorite combination of mine. Dying to make this!

    Reply

    • Mercedes
      Jul 09, 2013 @ 8:57 am

      Thanks Alyssa! The best part is how easy it was to make! I hope you had a great 4th weekend!

      Reply

  6. Jessica@AKitchenAddiction
    Jul 09, 2013 @ 8:13 am

    Amazing! Love that you added rice krispies to give it a crunch!

    Reply

  7. Averie @ Averie Cooks
    Jul 09, 2013 @ 4:27 pm

    Wow..that drippy ganache, and the PB cups diced, that just takes a great recipe over the edge! Gorgeous!

    Reply

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