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Creamy Peanut Butter Frosting

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  • Author: Sue
  • Prep Time: 10 minutes :contentReference[oaicite:4]{index=4}
  • Cook Time: 0 minutes
  • Total Time: 10 minutes :contentReference[oaicite:5]{index=5}
  • Yield: Makes enough for 12 generously frosted cupcakes or 24 modestly frosted cupcakes; also covers a 9×13 cake or 2‑layer 8‑9″ round cake :contentReference[oaicite:6]{index=6}
  • Category: Dessert Frosting
  • Method: Mixing/Beating
  • Cuisine: American
  • Diet: Vegetarian

Description

A creamy, fluffy homemade peanut butter frosting perfect for spreading or piping on cakes and cupcakes.


Ingredients

  • 1 cup (226 g) unsalted butter, softened
  • 1 cup (245 g) creamy peanut butter
  • 3 cups (375 g) powdered sugar
  • 1 teaspoon vanilla extract
  • ½ teaspoon salt
  • 2 tablespoons milk

Instructions

  1. Combine butter and peanut butter in a large bowl and beat until creamy and well‑combined.
  2. Gradually add powdered sugar (about ⅓ cup at a time) with mixer on low until fully incorporated.
  3. Stir in vanilla extract and salt.
  4. Add milk and mix until well‑combined; increase mixer speed to high and beat for about 30 seconds until light and fluffy.
  5. Pipe or spread onto completely cooled cupcakes or cakes.

Notes

  • This recipe covers a 9×13 sheet cake, a 2‑layer 8″ or 9″ round cake, or 12 generously frosted cupcakes (or up to 24 modestly frosted cupcakes) :contentReference[oaicite:1]{index=1}.
  • For a stiffer frosting, add an additional ½–1 cup powdered sugar :contentReference[oaicite:2]{index=2}.
  • Avoid using natural peanut butter that separates—it's too oily and can lead to grainy or runny frosting :contentReference[oaicite:3]{index=3}.

Nutrition

  • Serving Size: 1/12 batch (approx.)
  • Calories: 381 kcal :contentReference[oaicite:7]{index=7}
  • Sugar: 32 g :contentReference[oaicite:8]{index=8}
  • Sodium: 199 mg :contentReference[oaicite:9]{index=9}
  • Fat: 26 g :contentReference[oaicite:10]{index=10}
  • Saturated Fat: 12 g :contentReference[oaicite:11]{index=11}
  • Trans Fat: 1 g :contentReference[oaicite:12]{index=12}
  • Carbohydrates: 34 g :contentReference[oaicite:13]{index=13}
  • Fiber: 1 g :contentReference[oaicite:14]{index=14}
  • Protein: 6 g :contentReference[oaicite:15]{index=15}
  • Cholesterol: 41 mg :contentReference[oaicite:16]{index=16}