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Homemade Peanut Butter Frosting

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  • Prep Time: 10 minutes

  • Total Time: 10 minutes

  • Skill Level: Easy (Beginner-friendly)

  • Yield: Approximately 3 cups (enough to frost 24 cupcakes or one 9×13-inch sheet cake generously)

  • Intensity: Low (Minimal equipment and effort required. The most strenuous part is scooping the peanut butter!)

Ingredients

  • 1 cup (2 sticks / 226g) unsalted butter, softened to room temperature

  • 1 cup (270g) creamy peanut butter (Use a standard, no-stir brand like Jif or Skippy for best consistency and sweetness)

  • 1 teaspoon pure vanilla extract

  • ¼ teaspoon fine sea salt (Omit if using salted butter)

  • 3-4 cups (360-480g) powdered sugar (confectioners’ sugar), sifted

  • 2-4 tablespoons heavy cream or whole milk

Equipment Needed

  • Stand mixer with paddle attachment or a hand mixer

  • Large mixing bowl

  • Measuring cups and spoons

  • Rubber spatula

  • Fine-mesh sieve (for sifting powdered sugar)

Step-by-Step Instructions

1. Cream the Base:
In the bowl of a stand mixer fitted with the paddle attachment (or using a hand mixer in a large bowl), beat the softened butter and creamy peanut butter together on medium-high speed for 2-3 minutes. The mixture should become very pale, fluffy, and completely smooth. Scrape down the sides of the bowl with a spatula to ensure even mixing.

2. Flavor It:
Add the vanilla extract and salt (if using). Mix on medium speed until fully incorporated, about 30 seconds.

3. Add the Sugar Gradually:
With the mixer on low speed, begin adding the sifted powdered sugar, one cup at a time. Allow each cup to incorporate fully before adding the next. This gradual addition prevents a sugary cloud from erupting in your kitchen. After 3 cups, stop and check the consistency and sweetness.

4. Achieve the Perfect Consistency:
Increase the mixer speed to medium and add 2 tablespoons of heavy cream. Beat for 1 minute. Check the frosting. It should be smooth, creamy, and hold medium peaks.

  • For a stiffer frosting (ideal for piping detailed decorations): Add the remaining powdered sugar.

  • For a creamier, softer frosting (ideal for spreading or a lighter sweetness): Add the remaining cream, 1 tablespoon at a time, until your desired spreadable consistency is reached.

5. Final Whip:
Once you’ve reached your preferred consistency, beat the frosting on medium-high speed for a final 1-2 minutes. This incorporates air, making it extra light and fluffy. Your frosting is now ready to use!

Chef’s Notes & Tips for Success

  • Room Temperature is Key: Soft, room-temperature butter is non-negotiable for a lump-free, creamy frosting. Take it out 1-2 hours before you start.

  • Peanut Butter Choice: For a stable, sweet, and smooth frosting, use a conventional creamy peanut butter. Natural peanut butters (with oil separation) can make the frosting greasy and less stable.

  • Sifting Matters: Sifting the powdered sugar may seem like an extra step, but it prevents lumps and leads to a silkier final product.

  • Adjust to Taste: This is your frosting! For a more intense peanut flavor, add an extra 2-3 tablespoons of peanut butter. For a saltier contrast, use a salted peanut butter.

  • Troubleshooting:

    • Too Thick? Add more cream, 1 teaspoon at a time.

    • Too Thin? Add more sifted powdered sugar, ¼ cup at a time.

    • Too Sweet? A tiny pinch of additional salt can help balance the sweetness.

Storage & Lasting Quality

  • Refrigeration: Store leftover frosting in an airtight container in the refrigerator for up to 1 week.

  • Freezing: This frosting freezes beautifully for up to 3 months. Store in a freezer-safe container or bag. Thaw overnight in the refrigerator and re-whip with your mixer for a minute or two to restore its creamy texture before using.

  • Frosted Cakes/Cupcakes: Cakes frosted with this buttercream can sit at room temperature for up to 2 days (if climate permits) due to the butter’s stability. For longer storage, refrigerate for up to 5 days. Let come to room temperature for about an hour before serving for the best texture and flavor.

Nutritional Information

  • Serving Size: 2 Tablespoons

  • Servings Per Recipe: ~24

Approximate Values Per Serving:

  • Calories: 220 kcal

  • Total Fat: 14g

  • Saturated Fat: 6g

  • Cholesterol: 25mg

  • Sodium: 85mg

  • Total Carbohydrates: 22g

  • Dietary Fiber: 0.5g

  • Sugars: 20g

  • Protein: 3g

Nutritional information is an estimate calculated using an online nutrition calculator and standard brand ingredients. Values may vary based on specific ingredients used and portion sizes.

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