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Peanut Butter Bomb Cake (+Video)

This Peanut Butter Bomb Cake is a peanut butter (and chocolate!) lovers dream! It all starts with a boxed cake mix! So good and so moist!

A PEANUT BUTTER LOVER’S CAKE!

I love peanut butter. Ok wait, I should clarify that. I love peanut butter in sweets. Peanut butter cookies, peanut butter frosting, peanut butter bars, and of course, peanut butter cake. Funny thing is, I don’t really eat much peanut butter outside of that except for the occasional peanut butter and celery.

slice, Peanut Butter Bomb Cake on a white plate served with Nutter Butter cookies.

CAN I USE A PEANUT BUTTER FROSTING INSTEAD?

Absolutely! I have a delicious homemade peanut butter frosting that I use for my Reese’s Peanut Butter Cake that would work great on this cake! I love peanut butter in sweets. And in this cake, it makes the cake so moist and delicious. Honestly, the cake is so good all by itself. The frosting is just a bonus! 

closeup side photo of a slice of peanut butter bomb cake on a small round white plate.

INGREDIENTS NEEDED: (SEE RECIPE CARD BELOW FOR THE FULL RECIPE)

  • yellow cake mix
  • water
  • vegetable oil
  • eggs
  • creamy peanut butter
  • chocolate frosting
  • Nutter Butter cookies
yellow cake mix, water, vegetable oil, eggs, peanut butter, chocolate frosting, Nutter Butter cookies.

HOW TO MAKE PEANUT BUTTER BOMB CAKE:

Preheat oven to 350F degrees. Spray a 9×13 baking pan with nonstick cooking spray. In a bowl, combine cake with with water, oil, eggs and 1 cup of peanut butter. Stir until combined well (it’s okay if it’s a little lumpy.)

cake mix, oil, eggs, water and peanut butter in a large mixing bowl.

Pour batter into prepared baking dish and bake for about 23-28 minutes.

peanut butter cake batter in a greased baking dish.

A toothpick inserted into the middle of the cake should come out clean when cake is done.

fully baked peanut butter cake in a baking dish (shown without frosting.)

Allow cake to cool completely. Then in a medium bowl, combine chocolate frosting with leftover (1/4 cup) peanut butter. Stir until combined.

store-bought chocolate frosting stirred together with peanut butter in a glass bowl.

Spread frosting onto cooled cake. For the topping you can use Nutter Butter Cookies. Place 4 or 5 cookies (more if you like lots of cookies) into a ziploc bag. And crush the cookies using a rolling pin or other heavy object. Sprinkle crushed cookies onto cake. 

Peanut Butter Cake with Chocolate Peanut Butter frosting topped with crushed Nutter Butter cookies.

Then slice and serve.

slice, Chocolate and Peanut Butter Cake on a small plate.

CRAVING MORE EASY DESSERT RECIPES?

slice, Peanut Butter Bomb Cake on a white plate served with Nutter Butter cookies

Peanut Butter Bomb Cake (+Video)

This Peanut Butter Bomb Cake is a peanut butter (and chocolate!) lovers dream! It all starts with a boxed cake mix! So good and so moist!
4.93 from 26 votes
Print Pin Rate
Prep Time: 10 minutes
Cook Time: 28 minutes
Total Time: 38 minutes
Servings: 12

Ingredients

Instructions

  • Preheat oven to 350F degrees. Spray a 9×13-inch baking pan with nonstick cooking spray.
  • In a bowl, combine 15.25 ounce box yellow cake mix, 1 1/4 cups water, 1/4 cup vegetable oil, 3 large eggs and 1 cup creamy peanut butter. Stir until combined well.
  • Pour batter into prepared baking dish and bake for about 23-28 minutes.
  • A toothpick inserted into the middle of the cake should come out clean when cake is done. Allow cake to cool completely before frosting.
  • In a medium bowl, combine 1 tub chocolate frosting with 1/4 cup creamy peanut butter. Stir until combined.
  • Spread frosting onto cooled cake.
  • Place 5-6 Nutter Butter cookies (more if you like lots of cookies) into a ziploc bag. And crush the cookies using a heavy object like a rolling pin. Sprinkle crushed cookies onto cake.
  • Slice and serve.

Video

Course: Dessert
Cuisine: American

Nutrition

Calories: 395kcal | Carbohydrates: 44g | Protein: 9g | Fat: 21g | Sodium: 471mg | Fiber: 2g | Sugar: 23g

Nutritional Disclaimer

“The Country Cook” is not a dietician or nutritionist, and any nutritional information shared is an estimate. If calorie count and other nutritional values are important to you, we recommend running the ingredients through whichever online nutritional calculator you prefer. Calories and other nutritional values can vary quite a bit depending on which brands were used.

Did you make this recipe?Share it on Instagram @thecountrycook and mention us #thecountrycook!

Originally published: April 2013
Updated & republished: August 2019

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Recipe Rating




35 Comments

  1. 5 stars
    This looks like a cake for me. I love peanut butter and yes straight out of the jar. When I ever get a decent place to live, this cake will be made.
    Thanks for the recipe.

  2. 5 stars
    Quick question in reference to the cake ingredients, are the water, eggs and oil measurements for a specific brand or are they altered for any yellow cake mix? T.I.A!

  3. 5 stars
    I LOVE this cake! My Mom made it all the time while I was growing up! It is one of my favorites! I will say, it is important to use a plain yellow cake mix, not moist or super moist. I usually put 1 1/4 cups of PB in the mix and 1/2 a cup in the frosting because we love pB!

  4. 5 stars
    We are making this today! My mother made it for years and I lost her recipe! Thanks to you I FINALLY found it again! I will say we never added Nutter Buttle ters on top and I like to add a little more PB to the frosting but I am so thrilled to finally be able to share this recipe with my teenage daughters to make! it’s been several years……I can’t WAIT for dessert tonight!

    1. Oh my goodness – this makes me cry! To me, there is nothing better than when someone finds a recipe on here that their mother or grandmother made. It just makes me so happy because food is such a special memory that we share with people we love. Thank you for taking the time to leave such a special comment!! 🙂

  5. 5 stars
    You saved my life with this recipe that turned out perfect for a birthday during a full blown kitchen remodel. I mixed it by hand, baked it in a nonstick foil pan in a toaster oven in my basement kitchenette.

    This is why I subscribe to this site. You are in tune with people.

    THANK YOU BRANDIE!

  6. 5 stars
    I absolutely LOVE your recipes!! I'm wondering if you could do this Peanut Butter Bomb cake as one of your poke cakes? Maybe use chocolate pudding to drizzle in the holes?

  7. 5 stars
    Just made the batter for cupcakes. This is a winner and must try for everyone. Cupcakes rose and stayed perfect when they baked and cooled. Probably the most moist cake I’ve ever made. Would rate it higher than a 5.

  8. This looks perfect ! I’m supposed to make a cake for my friends 30th Birthday and she is not a fan of chocolate but loves peanut butter.

    I was hoping to make it in a round cake though and not the 9×13 pan, can I do that with the same recipe measurements?

    1. I would love to try this cake! Looks and sounds amazing!! The cake mix I have just calls for oil and water. Do you think I can use it, and if so, should I still add the egg? I’m assuming no? (It’s a professional-grade cake mix that has all the eggs and everything in it already). Keep up the fabulous work!!!

  9. 5 stars
    First I want to say 'Thank You'!! Thank you for having this PB Bomb Cake where I could find it!! lol!! I actually just pulled the cake out of my oven – just waiting for it to cool so I can frost it!! It sure smells yummy and I can't wait to have dinner this evening JUST so I can try this! lol!! I am enjoying your page & all the great recipes you share – I hope you don't mind, but I have been 'sharing' them on the Facebook page I recently created!! Thanks so much for sharing so much on your blog – it's one of my new favorites!!

  10. 5 stars
    Love your recipes, they are delicious and easy, and this recipe site is the first I go to now, just to see what's new. Thank you so much.

  11. 5 stars
    This was perfection! Followed your recipe exactly. I think topped with miniature Reeses peanut butter cups would be delish also!

  12. Cant wait to try this. My husband loves pb cake & i can nvr make it like his momma does but this sounds ez enuf for me to make!!!!!!

  13. 5 stars
    my marriage probably would have lasted longer had i discovered your site earlier. i think he left me cuz i was the worst cook, ever. LOL

  14. 5 stars
    this cake is so moist and tasty peanut butter and I are having relationship lol it was sooo good sure worth a try and big hit in my house thank you

  15. 5 stars
    Oh heavens! My son-in-law, grandson and I are the peanut butter and chocolate in our family and I will be making this – today if I have any frosting because I have the rest! I may even try it with that new chocolate peanut butter…………mmmmmmmm………..

  16. 5 stars
    OMGOSH!! What a super easy and yummy recipe for peanut butter lovers! You just can't mess this recipe up and believe me, I'm pretty good at messing up recipes. LOL!
    Will be a keeper at my house.
    Have a nice weekend!

  17. 5 stars
    I made this recipe this morning and chose cupcakes. My husband absolutely loves this and I consider this a definite "keeper" for my recipe box.

  18. 5 stars
    I also love peanut butter in sweets but mostly, I'd rather just eat it with a spoon. 🙂 Seriously, I can't be trusted around a jar of it. 😉

  19. 5 stars
    Holey Peanut Butter! You're killing me with these recipes & photos. WOWZERS! I would go wild over this…and the nutter butters are the perfect touch. You are the Bomb yourself. =)

  20. 5 stars
    I love your recipes because they always leave me feeling like I can do it, really can do it! They seem simple, quick and the ultimate.. delicious! Thank you!