Chocolate-Peanut Butter Sheet Cake Recipe
Chocolate-Peanut Butter Sheet Cake Recipe photo by Taste of Home
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Chocolate-Peanut Butter Sheet Cake Recipe

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I love peanut butter and chocolate, so I combined recipes to blend the two. This cake is heavenly served plain or topped with ice cream. —Lisa Varner, El Paso, Texas
TOTAL TIME: Prep: 25 min. Bake: 25 min. + cooling
MAKES:15 servings
TOTAL TIME: Prep: 25 min. Bake: 25 min. + cooling
MAKES: 15 servings


  • 2 cups all-purpose flour
  • 2 cups sugar
  • 1 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup water
  • 1/2 cup butter, cubed
  • 1/2 cup creamy peanut butter
  • 1/4 cup baking cocoa
  • 3 large eggs
  • 1/2 cup sour cream
  • 2 teaspoons vanilla extract
  • 3 cups confectioners' sugar
  • 1/2 cup creamy peanut butter
  • 1/2 cup 2% milk
  • 1/2 teaspoon vanilla extract
  • 1/2 cup chopped salted or unsalted peanuts

Nutritional Facts

1 piece: 482 calories, 20g fat (7g saturated fat), 59mg cholesterol, 337mg sodium, 70g carbohydrate (53g sugars, 2g fiber), 9g protein.


  1. Preheat oven to 350°. Grease a 13x9-in. baking pan.
  2. In a large bowl, whisk flour, sugar, baking soda and salt. In a small saucepan, combine water, butter, peanut butter and cocoa; bring just to a boil, stirring occasionally. Add to flour mixture, stirring just until moistened.
  3. In a small bowl, whisk eggs, sour cream and vanilla until blended; add to flour mixture, whisking constantly. Transfer to prepared pan. Bake 25-30 minutes or until a toothpick inserted in center comes out clean.
  4. Prepare frosting while cake is baking. In a large bowl, beat confectioners' sugar, peanut butter, milk and vanilla until smooth.
  5. Remove cake from oven; place on a wire rack. Immediately spread with frosting; sprinkle with peanuts. Cool completely. Yield: 15 servings.
Originally published as Chocolate-Peanut Butter Sheet Cake in Taste of Home February/March 2015, p64

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dvierzen User ID: 7402990 263642
Reviewed Mar. 19, 2017

"I'm very happy I found this recipe; it's absolutely delicious! It perfectly satisfied my peanut butter and chocolate cravings!!

Like every frosting recipe, I adjusted the milk and powdered sugar ratios to suit my preferences and it was perfect. I also waited to frost until the cake was completely cool - I learned that lesson a long time ago!
I'm not sure why some feel the need to poorly rate recipes based on things like too much frosting or baking times. Ovens can be different and every one has different preferences in how they like their frosting!
This is a very delicious cake recipe and I will be making it often."

pyrlgyrl User ID: 7085265 245188
Reviewed Mar. 9, 2016

"This is a great recipe; my 10 year old saw this and decided to make it. I helped her because it's a bit putzy with boiling the pb, water, etc. But worth it. I will add this to my potluck list of desserts. Super fluffy. Also, the frosting seems runny but once applied it sets up the next day even better."

vistaannie User ID: 1818596 244689
Reviewed Feb. 29, 2016

"cake has a good flavor but tje amount of icing is way too much. Half would be better."

joshua User ID: 113163 244170
Reviewed Feb. 20, 2016

"I made this cake today. I followed instructions completely, used a 9x13 pan and this cake was still so not cooked...I had to add another 15 minutes (in 5 min measures) and it is still not completely cooked. outside is but middle is not. I bake at least 3 times a week and never have a problem. I would not make this again."

hughesbambi User ID: 2603719 243632
Reviewed Feb. 11, 2016

"I made the cake as written. I would make it again with the following changes. Add baking powder as it was a tad heavy for my tastes. Also, let the cake cool a little before spreading frosting. Adding it immediately as the recipe instructions say melts the frosting and it pools along the sides. Fortunately I made it on a cold day so I put it in the garage to quickly cool and kept rearranging the frosting until it stayed put."

cbenne12 User ID: 7424916 243555
Reviewed Feb. 9, 2016

"Will be making again and again and again!"

usmcmom8 User ID: 8428443 243504
Reviewed Feb. 9, 2016 Edited Feb. 13, 2016

"This is the best cake ever! I made it for my birthday. What a treat! Everyone loved it. This will be a family favorite from now on. I used the dark chocolate cocoa. Thank you for sharing this wonderful recipe."

abashu User ID: 6784654 243120
Reviewed Feb. 3, 2016

"I say moist, better than a box mix. My husband says Yummy! My picky grandson says can I have more. This is a winner."

whoknew? User ID: 3643851 243006
Reviewed Feb. 1, 2016

"Very moist cake, and just added a splash of milk to the frosting. I thought the cake could be a tad more chocolaty. Very good recipe and easy to make:)"

dcscake_OH User ID: 228890 242895
Reviewed Jan. 31, 2016

"I have made this for home, for work, and for parties. It is so.... good. It is a great recipe. Everyone I have ever served it too, wants the recipe."

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