Old Fashioned Butter Cake with Peanut Butter Frosting

Posted by My Name is Alice on



Indulge in the ultimate classic dessert with this Old-Fashioned Butter Cake, generously topped with a creamy peanut butter frosting. The moist, tender crumb of this cake paired with the rich, nutty frosting makes it an irresistible treat for family gatherings, potlucks, or just because you deserve something sweet! Topped with roasted peanuts, it’s a nostalgic and comforting dessert that will have everyone asking for seconds.

Ingredients

For the Cake:

  • 2 cups all-purpose flour: The foundation for the cake, providing structure.
  • 2 cups granulated sugar: Adds sweetness and moisture to the crumb.
  • 1 teaspoon baking soda: Ensures the cake rises perfectly.
  • 1 teaspoon salt: Balances the flavors.
  • 1 stick (12 tablespoons) unsalted butter: Adds richness and a buttery flavor.
  • 1 cup water: Helps dissolve the butter and ensures a moist batter.
  • 1/2 cup peanut butter (unnatural): Adds a nutty flavor and extra softness.
  • 1/2 cup vegetable oil: Keeps the cake soft and tender.
  • 2 eggs: Binds the ingredients and adds structure.
  • 1/2 cup milk (room temperature): Adds moisture and richness.
  • 1 teaspoon vanilla extract: Enhances the overall flavor.

For the Peanut Butter Frosting:

  • 1 stick (12 tablespoons) unsalted butter: Creates a smooth and creamy texture.
  • 1/2 cup soft peanut butter: The key to that rich, nutty frosting.
  • 6 tablespoons curd (or more if needed): Ensures the frosting spreads smoothly.
  • 1 teaspoon vanilla extract: Adds a touch of sweetness.
  • 3 cups sifted powdered sugar: Sweetens and thickens the frosting.

For Garnish:

  • 1/2 cup roasted peanuts: Adds a delightful crunch and a burst of nutty flavor.

Directions

1. Prepare the Cake Batter

  • Preheat your oven to 350°F (175°C).
  • Spray a 9×13-inch baking pan with nonstick spray or grease it lightly with butter.
  • In a large mixing bowl, whisk together the flour, sugar, baking soda, and salt. Set aside.

2. Heat the Wet Ingredients

  • In a small saucepan, combine the butter and water. Bring to a boil over medium heat.
  • Once boiling, remove from heat and immediately add the peanut butter and vegetable oil. Stir until the mixture is smooth and well combined. Allow it to cool for a few minutes.

3. Combine Wet and Dry Mixtures

  • To the slightly cooled wet mixture, add the eggs, milk, and vanilla extract. Stir until well blended.
  • Gradually add the dry ingredients into the wet mixture, stirring until smooth and fully incorporated. Avoid overmixing.

4. Bake the Cake

  • Pour the batter into the prepared pan and spread it evenly.
  • Bake for 40-45 minutes, or until a toothpick inserted into the center comes out clean.
  • Allow the cake to cool slightly on a wire rack while you prepare the frosting.

5. Make the Peanut Butter Frosting

  • In a medium saucepan, combine the butter, peanut butter, and milk. Bring the mixture to a gentle boil over medium heat, stirring constantly.
  • Remove from heat and stir in the vanilla extract.
  • Gradually add the sifted powdered sugar, one cup at a time, stirring until the frosting is smooth and pourable.
  • Pro Tip: If the frosting is too thick, add a splash more milk to achieve a pourable consistency.

6. Assemble the Cake

  • Pour the hot frosting over the warm cake. The frosting will spread and set quickly, creating a smooth and irresistible glaze.
  • Using a spatula, spread the frosting evenly over the cake.
  • Top with roasted peanuts for an extra crunch and visual appeal.

Pro Tips for Perfecting This Recipe

  1. Use room-temperature ingredients: Ensures even mixing and a smoother batter.
  2. Avoid overmixing the batter: Overmixing can make the cake dense instead of fluffy.
  3. Adjust frosting consistency: If the frosting is too thick, add more milk; if too thin, add a bit more powdered sugar.
  4. Garnish generously: The roasted peanuts not only look stunning but add a textural contrast that elevates the cake.

Serving Suggestions

  • Enjoy this cake as-is with a steaming cup of coffee or tea.
  • Serve with a scoop of vanilla ice cream for an extra indulgent treat.
  • Add a drizzle of chocolate sauce for a fun twist.

Why You’ll Love This Cake

This Old-Fashioned Butter Cake strikes the perfect balance between a soft, tender crumb and a luscious peanut butter frosting. Its simple preparation makes it foolproof for bakers of all levels, while its rich, nutty flavor makes it a guaranteed crowd-pleaser. Whether for a casual family dessert or a special occasion, this cake delivers pure comfort and nostalgia in every bite.

Make this recipe today, and you’ll see why this classic butter cake has stood the test of time. Simple ingredients, easy steps, and an unforgettable flavor—this is the dessert you’ve been looking for! 🍰✨