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–+ servings
Peanut Butter Sheet Cake

Irresistibly Fluffy Peanut Butter Sheet Cake to Satisfy Cravings

Enjoy the rich flavor of peanut butter with this easy sheet cake. Perfect for cravings and gatherings.
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Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Servings: 12 slices
Course: Desserts
Cuisine: American
Calories: 250
Ingredients Equipment Method Nutrition Notes

Ingredients
  

For the Cake
  • 2 cups all-purpose flour Substitute with gluten-free flour blend for a lighter option.
  • 2 cups sugar Coconut sugar can be used for a healthier twist.
  • 1 teaspoon baking soda Acts as a leavening agent; no substitutions needed.
  • 1/2 teaspoon salt Balances sweetness.
  • 1 cup water Hydrates the dry ingredients.
  • 3/4 cup butter, cubed Can substitute with margarine.
  • 1/2 cup chunky peanut butter Creamy peanut butter can be used.
  • 1/4 cup canola oil Vegetable oil can substitute.
  • 2 large eggs, room temperature Flaxseed meal and water can be used for replacements.
  • 1/2 cup buttermilk Plain yogurt thinned with water is a great swap.
  • 1 teaspoon vanilla extract
For the Glaze
  • 2/3 cup sugar
  • 1/3 cup evaporated milk Heavy cream can be used instead.
  • 1 tablespoon butter Dairy-free butter can be used.
  • 1/3 cup chunky peanut butter Creamy works well too.
  • 1/3 cup miniature marshmallows
  • 1/2 teaspoon vanilla extract

Equipment

  • 15x10-inch baking pan
  • Mixing Bowls
  • Saucepan
  • Spatula

Method
 

Step-by-Step Instructions
  1. Preheat your oven to 350°F (175°C) and grease a 15x10-inch baking pan.
  2. In a large mixing bowl, whisk together the flour, sugar, baking soda, and salt.
  3. In a saucepan, combine the water and butter over medium heat until boiling, then stir in peanut butter and canola oil.
  4. Pour the warm mixture into the dry ingredients and stir until just combined.
  5. Whisk together the eggs, buttermilk, and vanilla, then fold into the batter.
  6. Pour the batter into the prepared pan and bake for 20-25 minutes.
  7. For the glaze, combine sugar, evaporated milk, and butter in a saucepan and boil for 2 minutes.
  8. Remove from heat, stir in peanut butter, marshmallows, and vanilla until smooth.
  9. Once the cake has cooled slightly, drizzle the glaze on top and let it set.

Nutrition

Serving: 1sliceCalories: 250kcalCarbohydrates: 34gProtein: 4gFat: 12gSaturated Fat: 6gPolyunsaturated Fat: 1gMonounsaturated Fat: 5gCholesterol: 50mgSodium: 200mgPotassium: 150mgFiber: 1gSugar: 24gVitamin A: 500IUCalcium: 40mgIron: 1mg

Notes

Experiment with different nut butters or add chocolate chips for a unique twist.

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