Peanut Butter Sheet Cake

This peanut butter sheet cake is packed with as much peanut butter as possible for a truly phenomenal taste and texture!

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!

Alright, guys. I’m done.

My kid was at summer camp all last week and look. The first few days I binged television shows and ate crap food and enjoyed the solitude. It didn’t take long for me to start missing her, though.

Sure, my teenager was still home, but let’s be real. He’s 17 and he basically ignores me all the time. My 12 year old still hangs out with me, so when she’s gone? It’s a little lonely.

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!

She’s home now, thank goodness. I was seriously starting to get concerned with myself. I mean, I homeschool my kids. I obviously really like them and stuff, but I also really like breaks from them. I generally enjoy alone time and I don’t miss them when they stay overnight with friends. I just don’t, I’m sorry, that’s terrible to admit.

But a whole week?

I missed my kid. I’m glad she’s home.

She requested this peanut butter sheet cake as a little homecoming dessert and I don’t blame her. This thing is GOOD.

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!

I started with a recipe I found in one of my mama’s old Gooseberry Patch books and I just doctored it up a bit to include 4 times as much peanut butter, swapped the water for milk for extra richness, and then I used a chocolate peanut butter frosting, because why not?

First of all, adding 4 times as much peanut butter to a recipe is a bit ballsy. I mean, baking cake is a science and messing with the fat to flour ratio can be tricky, but I am so glad I was brave enough to tinker with this one. This cake is just bursting with peanut butter and it’s so rich and moist. Seriously just amazing.

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!

The chocolate peanut butter frosting is super easy and I love that you just pour it right over the top of the cake and wait for it to set. So easy and the crackly frosting looks so pretty when you cut into it.

Go forth and eat all the peanut butter, friends.

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!

This peanut butter sheet cake is bursting with peanut butter flavor! It's a super moist cake topped with a chocolate peanut butter frosting!
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5 from 2 votes

Peanut Butter Sheet Cake

Prep Time
10 mins
Cook Time
15 mins
Total Time
25 mins
 
Servings: 16 servings
Course: Dessert
Cuisine: American
Keyword: easy cake recipes, easy dessert recipes, kid-friendly recipes
Calories: 541 kcal

This peanut butter sheet cake is packed with as much peanut butter as possible for a truly phenomenal taste and texture!

Ingredients

  • 1 1/2 cups granulated sugar
  • 1/2 cup brown sugar
  • 2 cups flour
  • 1 teaspoon baking soda
  • 1 teaspoon salt
  • 1 1/2 cups milk divided
  • 1 cup creamy peanut butter
  • 1 cup butter
  • 2 teaspoons vanilla
  • 2 large eggs
  • 1 cup granulated sugar
  • 1/3 cup butter
  • 1/3 cup milk
  • 1/2 cup creamy peanut butter
  • 1/2 cup semi-sweet chocolate chips

Instructions

  1. Preheat oven to 400 degrees. Grease a rimmed half sheet pan.
  2. Add the sugars, flour, baking soda, and salt to the bowl of a stand mixer fitted with the paddle attachment.
  3. Add 1 cup of milk, peanut butter, and butter to a small sauce pan and bring to a boil, stirring often.
  4. Remove from heat and let set for 5 minutes to cool. Add to the bowl with the flour and sugar.
  5. Add the remaining 1/2 cup of milk, vanilla, and eggs to the mixer and turn to low speed. Mix until just combined.
  6. Spread cake batter into prepared baking sheet and bake for 15 minutes. Cool completely.
  7. To make the frosting, add the sugar, butter, and milk to a small sauce pan and stir well. Bring to a boil and boil for exactly 60 seconds.
  8. Remove from the heat and stir in the peanut butter and chocolate chips until smooth and melted.
  9. Pour warm frosting over the cooled cake and spread with a spatula. Frosting will harden as it cools.
  10. Cut and serve once frosting has cooled and set.
  11.  
Nutrition Facts
Peanut Butter Sheet Cake
Amount Per Serving
Calories 541 Calories from Fat 279
% Daily Value*
Total Fat 31g 48%
Saturated Fat 14g 70%
Cholesterol 67mg 22%
Sodium 483mg 20%
Potassium 263mg 8%
Total Carbohydrates 59g 20%
Dietary Fiber 2g 8%
Sugars 43g
Protein 9g 18%
Vitamin A 11%
Calcium 6.2%
Iron 9.4%
* Percent Daily Values are based on a 2000 calorie diet.

Nutrition Disclaimer: All information presented on this site is intended for informational purposes only. I am not a certified nutritionist and any nutritional information shared on bunsinmyoven.com should only be used as a general guideline.