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)