Loaded Peanut Butter Layer Cake

This Peanut Butter Layer Cake is loaded with peanut butter in the cake, frosting and decorations. It’s a dream cake for any peanut butter lover!

Loaded Peanut Butter Layer Cake

Loaded Peanut Butter Layer Cake recipe

I think the biggest peanut butter lover in our house is probably Jessie, our black lab. There are few things that get her attention quite like the smell of peanut butter. She can be up in our bedroom fast asleep and I’ll open a jar and all of sudden she appears right beside me.

Her favorite days are ones where I’m baking with peanut butter. I let her lick the spoons and measuring cups and when I get to the bottom of a jar, she gets to finish that off too. Such a spoiled pup!

Of course she couldn’t understand why I wouldn’t feed her this entire cake. She followed me everywhere as I carried it between rooms so that I could take photos of it. The drool was out of control.

We definitely loved this cake too, but we’ve got nothing on her level of peanut butter obsession.

Best Peanut Butter Layer CakePeanut Butter Layer Cake recipe

This cake is truly meant for those who love peanut butter just as much as Jessie. It’s full of it! There’s peanut butter in the cake and frosting and then it’s decorated with peanut butter chips and drizzled with more peanut butter ganache. The final cake just screams peanut butter and is so good!

The cake itself is fairly straight forward. It starts by creaming the butter, sugars and peanut butter. To enhance the peanut butter flavor a bit, this cake uses both regular white sugar and brown sugar.

Then you’ve got vanilla extract and some sour cream for adding additional moisture. I’m a big fan of using sour cream. It adds moisture like nothing else and I love the additional flavor it adds.

Next up are the eggs, dry ingredients and some additional milk and water for more moisture. Why water? It adds some additional moisture without adding heaviness. You’ll find I usually have a bit of water in my cakes for that reason.

The frosting is a typical peanut butter american buttercream and it’s delicious! The peanut butter chips and ganache just add to the loaded peanut butter flavor. The final cake is pure heaven and so good! Time to grab your jar of peanut butter and indulge a bit! 🙂

Loaded Peanut Butter Layer Cake sliceDecorated Loaded Peanut Butter Layer Cake

Read transcript


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Loaded Peanut Butter Layer Cake

  • Author: Life, Love and Sugar
  • Prep Time: 30 minutes
  • Cook Time: 23 minutes
  • Total Time: 53 minutes
  • Yield: 12-14 Slices
  • Category: Dessert
  • Method: Oven
  • Cuisine: American


This Peanut Butter Layer Cake is loaded with peanut butter in the cake, frosting and decorations. It’s a dream cake for any peanut butter lover!



  • 1/2 cup (112g) unsalted butter, room temperature
  • 3/4 cups (155g) sugar
  • 3/4 cup (108g) brown sugar, loosely packed
  • 3/4 cup (210g) peanut butter
  • 1/2 cup (115g) sour cream
  • 2 tsp vanilla extract
  • 3 large eggs
  • 2 1/2 cups (325g) all purpose flour
  • 2 3/4 tsp baking powder
  • 1/2 tsp salt
  • 1/2 cup (120ml) milk
  • 1/4 cup (60ml) water


  • 2 cups (448g) salted butter, room temperature
  • 1 1/4 cups (350g) peanut butter
  • 9 cups (1035g) powdered sugar
  • 67 tbsp (90-105ml) water or milk
  • 10 oz peanut butter chips


  • 6 oz peanut butter chips
  • 1/2 cup (120ml) heavy whipping cream



1. Prepare three 8 inch cake pans with parchment paper circles in the bottom and grease the sides. Preheat oven to 350°F (176°C).
2. In a large mixing bowl, cream the butter, sugars and peanut butter together until light in color and fluffy, about 3-4 minutes. Do not skimp on the creaming time.
3. Add sour cream and vanilla extract and mix until well combined.
4. Add the eggs one at a time, mixing until just combined after each. Scrape down the sides of the bowl as needed to be sure all ingredients are well incorporated.
5. Combine dry ingredients in a separate bowl, then combine the milk and water in a small measuring cup.
6. Add half of the dry ingredients to the batter and mix until well combined. Add the milk mixture and mix until well combined. Add remaining dry ingredients and mix until well combined. Scrape down the sides of the bowl as needed to be sure all ingredients are well incorporated.
7. Divide the batter evenly between the cakes pans and bake for about 21-23 minutes, or until a toothpick comes out with a few crumbs.
8. Remove the cakes from the oven and allow to cool for about 2-3 minutes, then remove to cooling racks to cool completely.


9. In a large mixer bowl, beat the butter and peanut butter together until smooth.
10. Slowly add half of the powdered sugar and mix until smooth.
11. Add 5-6 tablespoons of water or milk and mix until smooth.
12. Slowly add the remaining powdered sugar and mix until smooth. Add additional water or milk, as needed to get the right frosting consistency.


13. To put the cake together, use a large serrated knife to remove the domes from the top of the cakes so that they’re flat. Place the first cake on a serving plate or a cardboard cake round.
14. Spread about 1 cup of frosting into an even layer on top of the cake.
15. Add the second layer of cake on top of the frosting.
16. Add another cup of frosting on top of the cake and spread into an even layer.
17. Top the cake with the remaining layer and frost the outside of the cake. Refer to my tutorial for frosting a smooth cake, if needed.
18. Press peanut butter chips into the sides of the cake.
19. To make the peanut butter ganache, add the peanut butter chips to a medium sized bowl.
20. Heat the heavy whipping cream until it begins to boil.
21. Pour the hot cream over the peanut butter chips and allow to sit for 3-5 minutes, then whisk until smooth.
22. Drizzle the ganache around the edge of the cake.
23. Use the remaining frosting to pipe swirls around the top of the cake (I used Ateco tip 844), then fill in the center with the remaining ganache.


  • Serving Size: 1 Slice
  • Calories: 1148
  • Sugar: 104.4 g
  • Sodium: 482.1 mg
  • Fat: 67 g
  • Carbohydrates: 130.9 g
  • Protein: 16.2 g
  • Cholesterol: 140.8 mg

Keywords: peanut butter dessert recipe, peanut butter cake recipe, peanut butter lovers dessert


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Favorite Peanut Butter Layer Cake

Loaded Peanut Butter Layer Cake! Peanut butter in the cake, frosting and decor!

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Recipe rating

    1. Devon

      I made this cake and the taste was great! However, the batter was very thick and sticky which I found strange and the cake itself came out a bit dense. Wondering what I did wrong :/ either way it was very good and a success for my boyfriend and brothers birthdays 🙂 

      1. Lindsay

        I’m not sure why a thick batter necessarily seems strange. It really depends on the cake. As for being dense, I think some people find things more dense than others. It’s kind of subjective. It sounds like you liked it though – I’m glad to hear that!

  1. Joy Magbanua

    Hi, your cake looks so inviting. I love baking ang cakes but I was diagnosed with diabetes 2 years ago. That is why I don’t bake that much any more like I use to.  Cake you help me with a recipe for a peanut butter cake with reduced sugar content?  I don’t mind giving myself a small bite sometimes. 

    Kind regards,

  2. Yvonne Loong Brandt

    Thank you so much for the new recipe :0) I googled for peanut butter chips and those are not available here in Denmark. After reading this recipe, it seems that the chips will melt in the hot cream. Is there any other things I can substitute the peanut butter chips with (e.g. chocolate chips….)?


      1. Pauline Mount

        What are the quantities of peanut butter, confectioners sugar and heavy cream plz as do not sell the chips by me thank you. 

    1. Lindsay

      You could definitely leave that part of. Another option would be to try and thin out some actual peanut butter a bit.

      1. Wendy Bell

        Lindsay! love your receipes but am a bit confused on the frosting for the loaded pnut butter cake. Receipe calls for 10 oz of pnut butter chips but video doesn”t seem to show them in the finished frosting and there is nothing added to melt them! Am I just not seeing them? Wendy

      2. Lindsay

        The peanut butter chips are pressed into the sides of the cake. They aren’t actually in the frosting itself.

  3. OJ

    Wow! This cake looks amazing!!!! Peanut butter is my favorite flavor EVER!! I can’t wait to give this a try! Thank you so much Lindsay! 

  4. Brittany

    Yay!!! I am SO excited you made this cake!! I just told my husband last night I wanted to make my dad a peanut butter cake for his birthday in 2 weeks!! Thank you so much!!! Definitely cannot wait to make this, I know it will be delicious since every single thing I make of yours is!

  5. Katrina

    My husband loves peanut butter as much as your Jessie does. I will have to make this cake for him! Looks delicious!

  6. Liz S.

    OOH, definitely a fabulous peanut butter addict delight cake! Love that Jessie is the biggest peanut butter fan in your household, haha 🙂

About Lindsay

I'm a wife and mom to twin boys, a baby girl and a sweet black lab with a serious sweets addiction! Bring on the sugar!

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“Be joyful in hope, patient in affliction, faithful in prayer.” Romans 12:12