Chocolate Birthday Cake with Peanut Butter Icing #Choctoberfest

Chocolate Birthday Cake with Peanut Butter Icing recipe from Triple Chocolate Kitchen

Today is the first day of #Choctoberfest (have you entered the giveaway yet?) so I knew I needed to share my favorite cake recipe of all time. I actually can’t believe I haven’t shared this recipe yet!

I absolutely love to bake and I love making treats for special occasions like birthday, bridal showers, and other parts. However I refuse to make my own birthday cake. Luckily I have a mother who enjoys baking as much as I do and makes a birthday cake for me each and every year! This is just a chocolate cake with peanut butter icing, but I call it my birthday cake because it’s the kind I’ve been requesting each year for my birthday for many many years now.

I’ve never had a chocolate cake as moist as this one! The last step of the recipe is to add a cup of boiling water, which makes the batter super runny. But fear not! It’s going to bake up so moist and chocolatey.

Chocolate Birthday Cake with Peanut Butter Icing recipe from Triple Chocolate Kitchen

Fun fact: My mom has never had a peanut butter icing recipe. She just dumps ingredients in a bowl into it tastes right and is the right consistency. I actually had to have her come up to my house and make it so I could measure her ingredients as she added them. Otherwise I wouldn’t be able to share it with you!

This recipe is super flexible in that you can make a 9×13 cake or cupcakes OR if you can’t decide you can make BOTH a 8×8 cake and about 10 cupcakes like my mother and I decided to do this time!

Here’s the recipe, or scroll down to see what other #Choctoberfest bloggers are cookin’ up today!



Chocolate Cake with Peanut Butter Icing

A super moist chocolate cake with peanut butter frosting on top.

Course Dessert


Cake Ingredients

  • 1 3/4 cups flour
  • 2 cups sugar
  • 3/4 cup cocoa
  • 1 teaspoon salt
  • 1 1/2 teaspoon baking powder
  • 1 1/2 teaspoon baking soda
  • 1 cup milk
  • 1/2 cup oil
  • 2 teaspoon vanilla
  • 2 eggs
  • 1 cup boiling water

Icing Ingredients

  • 3 Tablespoons butter softened
  • 2 cups peanut butter
  • 2 cups powdered sugar
  • 6 Tablespoons milk


To make cake:

  1. Preheat oven to 350 degrees Fahrenheit.

  2. Combine dry ingredients (flour, sugar, cocoa, salt, powder, and soda) in a mixing bowl.

  3. Add milk, oil, vanilla, and eggs. Beat at medium speed for 2 minutes to combine well.

  4. Stir in boiling water.

  5. Pour into a greased cake pan and bake until a toothpick comes out clean (roughly 25 minutes). If making cupcakes: Line a cupcake pan with cupcake papers. Fill each 2/3 full. Bake until a toothpick comes out clean (roughly 16 minutes).

  6. Let completely cool before frosting.

To make icing:

  1. With a mixer, combine butter, peanut butter, powdered sugar. Add milk. (Add more or less milk to reach desired consistency).

  2. If frosting a cake: Add icing carefully to top of cake. (Crumbs from cake easily let lose into icing if applied to roughly). If frosting cupcakes: Put icing into a piping bag and pip on top of each cupcake.

  3. Add sprinkles or other decorations as desired.

More from #Choctoberfest 2020 bloggers:

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Jessica is a co-founder here at The PinterTest Kitchen. She also works doing graphic design and marketing for Pine Creek Structures and does freelance graphic work in her free time.

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