Peanut Butter Cake

133 Comments

This post may contain affiliate links. Please read our disclosure policy.

My homemade Peanut Butter Cake with Peanut Butter Frosting is an old school recipe that will quickly become a family favorite. You will find the moist cake loaded with peanut butter flavor. Then we top it with the best peanut butter frosting.

Peanut butter cake on spatula

Peanut Butter Cake

Peanut butter fans are going to go crazy for this Peanut Butter cake. I am a big fan of everything peanut butter. If you follow along on my blog, you probably have already figured that out. I love my 3 ingredient Peanut Butter Cookies. My No Bake Reese’s Peanut Butter Cheesecake is an over the top  peanut butter lovers dream. So peanut butter recipes are my most favorite desserts and I share them often.

Uncut peanut butter cake

Newsletter Signup
recipes in your inbox

subscribe for all the latest deliciousness

Each year for my birthday, my grandmother would make us each a homemade cake to celebrate our day. My grandmother quickly realized that she never really had to ask me which cake was going to be my choice. Every year, I always requested her homemade peanut butter cake with peanut butter frosting. It really was her best homemade cake. It is perfect for feeding a crowd. We sometimes cut our cakes into smaller finger sized pieces when we are feeding more than just immediate family. You can easily get quite a few smaller pieces from a traditional sized cake pan. I know some make an old fashioned peanut butter sheet cake when serving a crowd. Sheet pan cakes are great but there is something about a thick moist cake topped with a layer of thicker frosting.

Peanut butter cake with fork

This recipe is an old fashioned cake recipe filled with so much flavor.  She has been making this same recipe for years. I thought the recipe was very tedious so I never tried to make it myself. I can’t believe I have waited this long to make her homemade peanut butter cake. I have now made this recipe a few times and each and every time, my family has gobbled it up. They now have deemed it their favorite cake.It was not difficult to make and took very little time. Sure a peanut butter cake mix would be a blessing for a quick dessert but homemade desserts are always the best. The question always lingers in my mind as to why manufacturers have yet to make a good peanut butter cake mix. Maybe someday they will excite all of us peanut butter fans with such a product.

Piece of peanut butter cake

How do you make Peanut Butter Cake?

All that is needed to make this recipe is some creamy peanut butter and some basic ingredients you most likely have on hand. Grab some of the store brand peanut butter, it will work best. It is always creamy and has the most oil content. So it is perfect for this cake. Peter Pan or Skippy will work fine too.

Peanut butter cake ingredients

Ingredients to Make Peanut Butter Cake with Homemade Peanut Butter Frosting

CAKE
2 cup Flour
2 cup Sugar
1 tsp Baking Soda
1/2 cup Milk
2 Eggs
1 tsp Vanilla
1 cup Water
1/2 cup Butter
3/4 cup Peanut Butter
FROSTING
1/2 cup softened Butter
1 cup Peanut Butter
3 tbsp Milk
2 cup Powdered Sugar

Buttering pan for peanut butter cake

How to make Homemade Peanut Butter Cake and Peanut Butter Frosting

Preheat oven to 350.
Grease a 9×13 baking dish with butter. Dust with flour to prevent sticking.
Whisk together flour, sugar, and baking soda in a large bowl.
Add milk, eggs, and vanilla to bowl.
Beat mixture at low speed until blended.
Add water, butter, and peanut butter to a saucepan.
Heat over medium heat stirring frequently until blended (about 5 minutes).
Add peanut butter mixture into flour mixture.
Stir until batter is well mixed and pour into prepared dish.
Bake about 35-40 minutes until a toothpick inserted in the center of the cake comes out clean.
Allow to cool.
Cream together the butter and peanut butter.
Slowly add in the sugar, if it gets too thick then add a little milk to thin.
Continue until all of the sugar is in and the frosting is blended to the right consistency.
Spread frosting over cooled cake.

Whisking peanut butter cake ingredients

Mixing peanut butter cake ingredients

Heating peanut butter cake ingredients

Blending peanut butter cake ingredients

Mixed peanut butter cake ingredients

Making peanut butter frosting

Mixing peanut butter frosting

Peanut butter cake cooling

Homemade peanut butter cake on a plate

Peanut butter cake with fork on a plate

Tips for Making Peanut Cake

I always heavily butter my baking dish. I also add a dusting of flour. This always keeps the cake from sticking.
Bake for long enough for your center to be baked thoroughly. Ovens and baking time can vary from oven to oven. Just use the toothpick trick. If the toothpick comes out clean, your cake is done.
Be sure to use softened butter for your peanut butter frosting. It will blend much better with the peanut butter and make the texture of your frosting creamier. Add a couple more drops of milk if you would like your frosting thinner.
Toss your cake in the refrigerator, it tastes amazing chilled too.
If storing your cake at room temperature, cover it to keep fresh.
Enjoy with a large glass of milk. Milk with this cake is amazing.

Long image of peanut butter cake

Peanut butter cake collage.

4.91 from 71 votes

Peanut Butter Cake

By: Jen CIncyshopper
My homemade Peanut Butter Cake with Peanut Butter Frosting is an old school recipe that will quickly become a family favorite. You will find the moist cake loaded with peanut butter flavor. Then we top it with the best peanut butter frosting.
Prep: 45 minutes
Cook: 35 minutes
Total: 1 hour 20 minutes
Servings: 12 pieces

Ingredients 

CAKE

  • 2 cup Flour
  • 2 cup Sugar
  • 1 tsp Baking Soda
  • 1/2 cup Milk
  • 2 Eggs
  • 1 tsp Vanilla
  • 1 cup Water
  • 1/2 cup Butter
  • 3/4 cup Peanut Butter

FROSTING

  • 1/2 cup softened Butter
  • 1 cup Peanut Butter
  • 3 tbsp Milk
  • 2 cup Powdered Sugar

Instructions 

  • Preheat oven to 350.
  • Grease a 9x13 baking dish with butter. Dust with flour to prevent sticking.
  • Whisk together flour, sugar, and baking soda in a large bowl.
  • Add milk, eggs, and vanilla to bowl.
  • Beat mixture at low speed until blended.
  • Add water butter and peanut butter to a saucepan.
  • Heat over medium heat stirring frequently until blended (about 5 minutes).
  • Add peanut butter mixture into flour mixture.
  • Stir until batter is well mixed and pour into prepared dish.
  • Bake about 35-40 minutes until a toothpick inserted in the center of the cake comes out clean.
  • Allow to cool.
  • Cream together the butter and peanut butter.
  • Slowly add in the sugar, if it gets too thick then add a little milk to thin.
  • Continue until all of the sugar is in and the frosting is blended to the right consistency.
  • Spread frosting over cooled cake.

Nutrition

Calories: 659kcal, Carbohydrates: 77g, Protein: 13g, Fat: 36g, Saturated Fat: 14g, Cholesterol: 69mg, Sodium: 431mg, Potassium: 295mg, Fiber: 3g, Sugar: 57g, Vitamin A: 535IU, Calcium: 44mg, Iron: 2mg
Like this recipe? Rate and comment below!

About Jen Cincyshopper

A lover of food and frugal living. A wife to a wonderful hubby, momma to 5 fun kiddos. Welcome to my blog. You will find REAL TASTY RECIPES. Be sure to subscribe to my email list and follow me on social media, to never miss a recipe.

You May Also Like:

Leave a comment

Your email address will not be published. Required fields are marked *

Recipe Rating




This site uses Akismet to reduce spam. Learn how your comment data is processed.

133 Comments

  1. 5 stars
    I am not a fan of peanut butter but I tasted one my sister in law made. It was great! She made me a whole cake. I searched for a recipe that I wanted to remind me of the middle school cafeteria! This peanut butter recipe is awesome! I remember baking with my granny when I was younger. Last Friday night me and my granny got in the kitchen and used your recipe!! Let’s just say it was all gone Minday morning! Kudos!! Now people want men to make.them one!

  2. 4 stars
    The cake was very moist.. The next time I make it I will use less peanut butter in icing and do more of a buttercream icing. Seemed to have a strong peanut butter favor. My son enjoyed it for his birthday dessert!

    1. When you say flour, do you mean All purpose or self rising? And with butter.. salted or unsalted? Just making sure I do this correctly. Thanks y’all!

  3. 3 stars
    The frosting tasted good enough, however, it was extremely oily and looked nothing like the picture. I followed the recipe, but it turned out oily and gloppy. I actually kept placing paper towels on the frosted cake to remove the oil. Please help. I’d like to make this cake again. The cake was very good. I just need to get the frosting right.
    Thank you, Markie

    1. You can’t use natural peanut butter in the frosting. Any peanut butter you have to stir will result in the same oily frosting.

    2. For the frosting greasiness, the oils in peanut butter fluctuate between brands, so you may need to add 1/4 cup more powdered sugar. Mix well. If still oily and still soft to spread, add another 1/4 cup powdered sugar. Continue adding in small increments to get desired spreadable frosting. Add 1/4 tsp salt to cut sweetness. (In my buttercream recipe, there’s 1 cup of butter/shortening to 4 cups of powdered sugar, so you have some “play room” to adjust since this recipe is 1 1/2 c butter/peanut butter to only 2 cups powdered sugar)

  4. 5 stars
    My dad loves this cake! His Mom made it for him every year as a kid and we have kept up the tradition! Highly recommend for someone who is a peanut butter fan. If your not or you are I suggest vanilla ice cream with it! Absolutely delicious! :))

  5. 5 stars
    Im going to make this next time i need to make a cake for church. So yummy. I poked holes in it when it was cooled with the handle of a wooden spoon and microwaved some strawberry jelly for a minute just to make it pourable. Then put it on the cake before putting on the frosting. My grandbabies love pb & j sandwiches so i bet they’re going to love this.

  6. Do you measure your flour by weight? This looks like a dense cake. I want to make sure I use enough. I typically use 120 g all purpose per cup.

  7. 5 stars
    I requested this for my birthday in December. My mother in law made it for me. OMG the best cake EVER. So my work also asked what kinda of “professional “ cake I would like so I again requested PB cake. The over priced three layer PB was a disappointment after tasting this simple homemade cake!!! I literally ate THREE pieces in one sitting!! And a tall glass of milk goes perfectly with this cake.

    1. Happy belated birthday to you Amber! I am happy to hear this Peanut Butter cake is one of your favorites. Thanks much! I will admit it is my favorite cake:) Each and every time I make it, I devour more than I should. Now you have me thinking I should make one for a birthday I have coming up. I hope you have a great weekend.

        1. I would recommend Jif Brand peanut butter. It is it best of them all, and is my personal favorite as well.

  8. It’s an odd reason, but I plan on making this for my hamsters’ birthday in March. They’re my children and one of them loves peanut butter! He’ll only be able to have a small bite, but I think this will be a perfect way to celebrate the special fuzzy babies in the house. I’m looking forward to making it!