Peanut Butter Sheet Cake with Peanut Butter Frosting: A Dessert Lover’s Dream

 


If you’re a peanut butter fan, get ready—because this dessert might just become your new obsession. Imagine a moist, fluffy sheet cake infused with creamy peanut butter, topped with a luscious peanut butter frosting that’s rich, smooth, and just the right amount of sweet. This Peanut Butter Sheet Cake with Peanut Butter Frosting is the ultimate comfort dessert: simple to make, perfect for feeding a crowd, and guaranteed to disappear fast.

Why You’ll Love This Recipe

  • Easy to Make: Sheet cakes are stress-free—no stacking layers or fancy decorating.

  • Perfectly Balanced Flavor: Sweet but not overpowering, with a rich nutty depth.

  • Feeds a Crowd: Ideal for potlucks, family gatherings, or holidays.

  • One-Bowl Frosting: The peanut butter frosting whips up in minutes.

Ingredients You’ll Need

For the Cake:

  • 2 cups all-purpose flour

  • 2 cups granulated sugar

  • 1 cup water

  • 1 cup creamy peanut butter

  • 1 stick (½ cup) unsalted butter

  • ½ cup vegetable oil

  • 2 large eggs

  • ½ cup buttermilk (or milk + 1 tsp vinegar as a substitute)

  • 1 tsp baking soda

  • 1 tsp vanilla extract

  • ½ tsp salt

For the Frosting:

  • ½ cup unsalted butter

  • ½ cup creamy peanut butter

  • ¼ cup milk

  • 1 tsp vanilla extract

  • 3–4 cups powdered sugar (depending on desired consistency)

Step-by-Step Instructions

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