Peanut Butter Sheet Cake

Peanut Butter Sheet Cake

These are definitely for peanut butter lovers. This peanut butter sheet cake is so luscious; it melts in your mouth. This cake is very rich and needs no frosting.


1/4 cup creamy peanut butter
1 cup water
1/2 cup butter
1 cup sugar
1 cup brown sugar
2 cups flour
1 teaspoon salt
1 teaspoon baking soda
2 eggs
1/2 cup buttermilk
1 teaspoon vanilla
3/4 cup butter
6 Tablespoon buttermilk
1/2 cup peanut butter
3 1/2 cups powdered sugar
1 Tablespoon vanilla


Preheat oven to 375 degrees.
For the cake:
In a medium pot add the peanut butter, water, and butter and bring to a boil. Remove from heat.
In a separate bowl, mix together the sugar, brown sugar, flour, salt, and baking soda with a fork. Add to the peanut butter mixture.
Add the eggs, buttermilk, and vanilla to the bowl and mix well.
Stir well and pour into greased or parchment lined cookie sheet pan with a little edge (12X17 jellyroll pan). Bake for 15 minutes at 375 degrees.
For the Frosting:
In a small pot bring the butter, buttermilk, and peanut butter to a boil. Remove pan from the heat and add the powdered sugar and vanilla. Pour frosting over the warm cake.

Source: Nina Jones

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  1. I tried making this cake, but after 15 minutes, the cake wasn’t done. It ended up taking 30 minutes.

  2. So when it says it needs no frosting the frosting recipe is optional?

  3. This looks absolutely wonderful, I wish I would have a piece of this right now!

  4. Do you have to use a jelly roll pan? I don’t have one, but i really wanna make this cake!

  5. Have you ever tried to bake these using Truvia and wheat flour (or 1/2 wheat, 1/2 white)? Just wondering how it would turn out…

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