Perfect for any occasion, this peanut butter and chocolate cake is so moist and delicious you’ll be making it over and over again. Although it looks like you worked all day, this cake is a breeze to make.

Few weeks ago, on a unexpected sunny days after a week of rain I decided to do some spring cleaning. It was time to declutter a little bit, out with the old, make room for the new.
I was doing so well, without a distraction until I found an old recipe binder. You know, the one post blog and pinterest. Old magazine clippings, printed recipes from various websites. That was the end of my spring cleaning. I made myself a big cup of coffee and browsed though all those yellowed pages, some of them with grease and batter stains on them. Others have hand written notes on the side, comments on how the recipe turned out. After a good 30 minutes of reading through the clippings and notes I found a recipe for a peanut butter and chocolate cake torn from an old Gold Medal Flour booklet.
I don’t know how old the recipe may be or how it landed into my binder, but it sure sounded too good not to try it.
Few hours later, after somehow finishing my spring cleaning I found myself in the kitchen whipping up this one super easy peanut butter and chocolate cake. 5 minutes of prep time, top! Just perfect for this busy mama.
You start by dumping all the ingredients in a mixing bowl and mix for few seconds on low speed. With a spatula scrape the sides of the bowl and mix again, this time on high speed for 2-3 minutes.
That’s it! I told you it’s most likely the easiest cake I’ve shared on this blog.
To make the marble design, mix the cocoa powder with a little bit of the peanut butter batter and with a fork or butter knife make few swirls. Place it in the oven and bake for about 40 to 45 minutes.
Once the cake is done it’s very important to let it cool completely before cutting it into squares, and decorate with chocolate ganache and peanut butter frosting. Now, of course I won’t blame you if you don’t want to do that and you dig right in. I’m totally on your side!

As much as I don’t like to admit it, I’ve come to the conclusion that chocolate and peanut butter is one of the most frequent combo on this blog. After months and months of putting it away, I can’t postpone it any longer! May is peanut butter and chocolate month.
And I’m not the only one thinking so. Not at all! My wonderful chocolate lovers party friends are all here with treats for everyone!
Peanut Butter Cup Brownies with a Peanut Butter Swirl from Life on Food
Peanut Butter Cup Pretzel Bonbons from It bakes me happy
Peanut Butter Chocolate Whirligigs from Karen’s Kitchen Stories
Chocolate Peanut Butter Hot Fudge Sauce from Diethood
Peanut butter chocolate chip cookie cheesecake bars from You make that?
Monster Peanut Butter-Cheesecake Sandwich Cookies with Chocolate Drizzle from From Brazil to you
New to the chocolate party? Welcome! Happy to have you here. I hope you’ll join us. Here’s how
Each month I, along with some wonderful and very talented blogger friends, decide upon a secret ingredient to use in our chocolate sweets.
Our recipes will be shared on the first Monday of each month and you can add your own recipes until the end of the month when the party is over and a new one is opened. You can submit up to 3 recipes each month.
To make sure everyone is having fun, there are a few rules you’ll have to follow.
1.) Blog about your chocolate treat. Your recipe must include the two ingredients we choose. It can be a simple no bake treat or a sophisticated layer cake, the complexity level of the recipe is totally up to you.
2.) Include a link back to a monthly round-up or the Chocolate party page. Optional, add the Chocolate Party logo in your blog post or on your sidebar.
3.) Your recipe must be published during the current month. Please do not link old recipes.
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My favorite combo is peanut butter and chocolate! Thanks for this delicious cake recipe.
These are so cute. I love the peanut butter chocolate combo. Having the individual pieces before the ganache means more chocolate goodness.
I’m loving that peanut butter frosting Roxana, great choice for the flavor combo!
5 minute prep time! My fave!! I love finding old recipe clippings!! Such treasures stashed away!
That cake looks so good and easy! And I am joining that chocolate party 😀
I’m literally wiping the drool… that is one beautiful cake!
Love that you serve the cake in squares covered in ganache! Peanut butter and chocolate is the best!
DYING over how pretty the ganache and little dollops of pb are!!!!
Oh my lawwrdy! PB&Chocolate…nothing better!
I have one of those binders, too! I really should go through it and start making some of the recipes. Wow, this cake is stunning. Pinned.
Looks so yum!!!
I love the two tone cake and the delicious peanut butter frosting piped on the top!
Thank you (and Gold Medal). This is OBVIOUSLY delicious, but also looks like it has a really nice texture. Definitely noting this one for future reference. 🙂 [#PinItThurs]
Hi Roxana!
These look AMAZING! I would love to have you link this up with me and the Create & Share DIY and Recipe Party. I hope to see you there!
-Karly
Dear Roxana, These look delightful! Have a wonderful holiday weekend. Blessings, Catherine
Oh my goodness, these little squares look AMAZING!!!!! What a beautiful and delicious looking dessert!!!
This cake is a chocolate-peanut butter lover’s dream! Pinning. 🙂
This recipe looks amazing… but I’m afraid to make it because it looks like an ingredient is missing. Step six says “Stir cocoa into remaining batter. Drop chocolate batter onto peanut butter batter”, yet I do not see cocoa listed in the ingredients for the recipe. Help?
Cocoa is listed in the ingredients list.
3 tablespoons (15 grams) unsweetened baking cocoa
it’s the last one of the list, just above the ingredients for the ganache
I love peanut butter and chocolate together and in these pretty swirled cake squares, they look just perfect.
Thanks for the invitation to join in the party this month. Your cake squares are such a fun idea.
Roxana, thanks for sharing with us at Marvelous Monday this week – it looks so good and I love the flavor combo! Pinning!
Such a yummy cake! My daughter is right there with you—chocolate and pb is one of her favorite combos, too! I need to make this for her.