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A close up of the crumb of an Old-Fashioned Peanut Butter Cake showing its moist and airy structure.

Old-Fashioned Peanut Butter Cake

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5 from 5 reviews

Description

This classic peanut butter cake utilizes a precise creaming method to achieve a dense yet tender crumb that perfectly balances roasted nut flavor with a rich, velvety frosting. Scientifically developed for consistency, it is the ultimate dessert for peanut butter enthusiasts seeking a professional-grade result.

Ingredients

  • 2 cups all-purpose flour (240g)
  • 1 cup creamy peanut butter
  • 1/2 cup unsalted butter, softened
  • 1 cup granulated sugar
  • 1 cup brown sugar
  • 1 cup buttermilk
  • 2 large eggs, room temperature
  • 2 tsp baking powder
  • 1/2 tsp baking soda
  • 1/2 tsp salt
  • 1 tsp vanilla extract
  • 1/2 cup creamy peanut butter (for frosting)
  • 1/2 cup unsalted butter (for frosting)
  • 3-4 cups powdered sugar (for frosting)
  • 2-3 tbsp milk (for frosting)
  • 1 tsp vanilla extract (for frosting)

Instructions

  1. Preheat your oven to 350°F (177°C) and grease and flour a 9×13 inch baking pan or your preferred cake rounds.
  2. In a medium glass bowl, whisk together the flour, baking powder, baking soda, and salt until the mixture is aerated and well-distributed.
  3. Using a stand mixer with a paddle attachment, beat the softened butter, peanut butter, granulated sugar, and brown sugar on medium-high speed for exactly 3 minutes until light and fluffy.
  4. Reduce the speed and add the eggs one at a time, followed by the vanilla extract, ensuring each addition is fully emulsified before proceeding.
  5. Incorporate the flour mixture and buttermilk in alternating batches (flour-milk-flour-milk-flour), mixing only until the last streaks of flour disappear to avoid over-developing gluten.
  6. Pour the batter into the prepared pan and bake for 30-35 minutes until an internal temperature of 205°F-210°F is reached or a toothpick comes out with moist crumbs.
  7. Prepare the frosting by creaming the butter and peanut butter, then whipping in the powdered sugar, milk, and vanilla on high speed for 2 minutes until voluminous and smooth.

Notes

For optimal results, ensure all dairy components and eggs are brought to exactly 65°F before mixing to prevent the emulsion from breaking. Avoid using natural peanut butters that require stirring, as the lack of stabilizers can lead to oil separation and structural failure in the crumb.

  • Prep Time: 25 mins
  • Cook Time: 35 mins
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

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Find it online: https://cakepeak.com/old-fashioned-peanut-butter-cake/