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Peanut Butter Buttercream

Peanut butter is one of my favorite flavors, so it’s about time I share my peanut butter buttercream recipe.

I love peanut butter so much, I add it to my oatmeal, and even my greek yogurt. Strange, I know! But I swear it’s delicious with honey.

More importantly, I love baking with it! I’ve made several cakes with peanut butter in the past, including my next level honey roasted peanut butter cake, and my PB&J cake!!

image of peanut butter buttercream being piped onto a chocolate macaron

This frosting is definitely on the sweet side, but the richness of the peanut butter helps balance out its flavor.

You could also add the same amount of peanut butter to a batch of my Swiss meringue frosting or try my Russian buttercream to create a less sweet peanut butter frosting.

My Secret Ingredient: Pasteurized Egg Whites

Before you get creeped out by the egg whites, trust me on this one!! It gives the frosting this fluffy, silky smooth texture that is so delicious!

This recipe starts by adding some peanut butter to my classic American buttercream, but the peanut butter really thickens the frosting.

To get the consistency right, I like to add in some additional heavy cream and pasteurized egg whites to make it easier to use to pipe and frost.

Peanut Butter and Jelly Layer Cake

Picking the Right Peanut Butter

One quick note around this recipe – it doesn’t work quite as well with natural peanut butter.

I find that because natural peanut butter can separate more easily, they can throw off the consistency of the buttercream. This can result in a messy, broken buttercream.

image of a chocolate peanut butter macaron that's been cut open to show its full shells and delicious honey roasted peanut butter center and buttercream filling

I usually use creamy peanut butter (like JIF or Skippy) and they incorporate really well into the frosting.

That being said, you can definitely experiment with your favorite peanut butter to see what works best for you!

Just be sure to use a creamy peanut butter or else you won’t be able to pipe or smooth this frosting.

Snickers Drip Cake

Paddle Attachment vs. Whisk Attachment

Now that we’ve covered troubleshooting, the last thing to discuss is our equipment.

Either a paddle or whisk attachment can be used to make this frosting with a stand mixer, or you can use a hand mixer.

I like to use my paddle attachment when making frosting for a cake, to minimize the amount of air that is incorporated into the frosting. This makes silky smooth frosting, which is easier to smooth onto cakes.

I use my whisk attachment when making frosting for cupcakes, which I like to be light and fluffy!

I like to incorporate air into frosting for cupcakes, because I usually pipe massive swirls onto each cupcake.

These are just my personal preferences though, and you can use whatever attachment or mixer you have. They’ll all get the job done!

image of creamy peanut butter butter buttercream in the bowl of a kitchenaid stand mixer

Make this Peanut Butter Frosting in Advance

This peanut butter buttercream recipe can be made in advance. I highly recommend making it ahead of time if possible.

Not only does it give the frosting time to develop more flavor, it also makes the decoration of a cake or cupcakes less stressful and more fun.

This frosting keeps in the fridge for up to a month or in the freezer for 3 months if stored in an airtight container.

When you’re ready to use the chilled buttercream, remove it from the fridge a few hours in advance (or overnight) and allow it to come to room temperature.

Give it a good stir with a rubber spatula or an electric mixer to get rid of any air bubbles that may have formed. Once the buttercream is smooth again, it’s ready to use!

image of honey roasted peanut butter buttercream that's been mixed and is ready to be used to fill macarons

Tips for Making Best Peanut Butter Buttercream Frosting:

  • Make sure your butter is at room temperature before making your frosting.
  • If your powdered sugar contains cornstarch (most brands in the US do) there’s no need to sift you powdered sugar.
  • Use heavy cream or heavy whipping cream and not normal milk! You need the higher fat percentage for the frosting to have the right consistency.
  • If you are making frosting for a cake, mix the buttercream on the lowest speed at the end of the process for a couple minutes to get out any extra air that might have been incorporated during the mixing process.
  • I usually make 1 batch of frosting to fill and frost a seven or eight inch cake.

Let Me Know What You Think!

If you try out this peanut butter buttercream recipe, please tag me @chelsweets and use the #chelsweets so I can see your creations.

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Yield: 7

Peanut Butter Frosting

image of buckeye cake being cut into to show it's peanut butter frosting and tender chocolate cake layers

This delicious peanut butter buttercream recipe is packed with flavor, and so easy to make! It's perfect for frosting cakes, or piping on cupcakes

Prep Time 10 minutes
Total Time 10 minutes

Ingredients

  • 1 1/2 cups unsalted butter, room temperature (339g)
  • 1/2 cup creamy peanut butter (125g)
  • 7 cups powdered sugar (907g or a 2 lb. bag)
  • 2 tsp vanilla extract (8g)
  • 1 tsp fine salt (6g)
  • 1/3 cup heavy cream or whipping cream (80g)
  • 1 Tbsp pasteurized egg whites - optional (15g)

Instructions

  1. Beat 1 1/2 cups of butter and 1/2 cup of peanut butter on a medium speed for 30 seconds with a paddle attachment until smooth.
  2. Mix in 2 tsp vanilla and 1 tsp of salt on a low speed.
  3. Slowly add in 7 cups of powdered sugar on a low speed. Halfway through add in 1/3 cup of heavy cream and 1 Tbsp of pasteurized egg whites (optional) to make the frosting easier to mix.
  4. Beat on low until the ingredients are fully incorporated and the desired consistency is reached. 
  5. If the frosting seems too thick, add in additional cream (1 Tbsp at a time). If the frosting is too thin, add in more powdered sugar (quarter of a cup at a time).
  6. If you plan to color the buttercream, add in the gel food coloring once the frosting is fully made. Beat on low until it reaches the desired colored.

Notes

This recipe makes about 7 cups of frosting, which is enough to frost an 8-inch layer cake or about 3 dozen cupcakes.

If you are making frosting for a cake, it is important to mix the buttercream on the lowest speed at the end of the process for a couple minutes. This pushes out any extra air that might have be incorporated during the mixing process.

You can also stir the frosting in a bowl with a rubber spatula, pushing it from side to side, to get rid of any air bubbles. This will make it easier to get super smooth sides on your cake!

Nutrition Information

Yield

7

Serving Size

1

Amount Per Serving Calories 942Total Fat 54gSaturated Fat 30gTrans Fat 0gUnsaturated Fat 20gCholesterol 122mgSodium 435mgCarbohydrates 115gFiber 1gSugar 109gProtein 5g

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Can you restore this recipe?

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Hi Danica,

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What cake is this please with the peanut butter buttercream please? Looks so good!!

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