This vegan Swiss meringue buttercream is the base recipe of both my vegan coffee buttercream and vegan chocolate Swiss meringue buttercream recipes. I figured it would make sense to keep this one here on the blog as this vegan buttercream is completely customizable, depending on what flavor frosting you're looking to make!

What to expect from this vegan buttercream

  • Easy to make and ready in under half an hour
  • Only 4 ingredients
  • Light and airy consistency
  • Not overly sweet like most American buttercream recipes
  • Fully customizable, you can mix up the flavors or just keep it plain and simple
  • Doesn’t require a candy thermometer
  • No need to reduce the aquafaba.
  • This recipe calls for caster sugar, not powdered sugar. We’ll be melting sugar into a syrup with aquafaba which will magically whip up into the fluffiest vegan buttercream you can imagine!

Ingredients overview

ingredients for eggless swiss meringue buttercream.Pin

Notes about the ingredients

  • Aquafaba: Also known as chickpea brine, this is the viscous liquid leftover from cooking chickpeas or other white legumes. In this vegan Swiss meringue buttercream recipe, it works as the perfect alternative to egg whites. The aquafaba fluffs up when whipped just like egg whites!
  • Caster sugar: If you're in the US you'll probably know this one as superfine sugar.
  • Vegan block butter: There are many brands of vegan-friendly butter available these days, it’s important to note that this recipe calls for stick butter, not the spreadable kind from a tub, I use flora unsalted plant butter.

How to make eggless Swiss meringue buttercream (with step-by-step images)

(Full ingredient quantities and instructions are in the recipe card at the end of this post)

Add the aquafaba and sugar to a large bowl and place the bowl on top of a saucepan with a few inches of water in the bottom. This process is known as a bain-marie (water bath). Bring the temperature up to medium and allow the mixture to heat for a few minutes until the sugar dissolves.

Remove the bowl from the heat and use an electric whisk to beat on high speed for 15-20 minutes. Continue until the mixture is completely cooled and glossy. You can also use a stand mixer. The mixture should be stiff and glossy and should stay in the bowl if you turn it upside down (carefully!).

Start slowly adding the chunks of butter to the meringue, one at a time, allowing the mixture to incorporate for about 5 seconds between each one. The mixture will flatten as you add the butter. Just continue to add the butter as it will stiffen when the full amount of butter is incorporated.

Once all the butter has been added the mixture be thick like buttercream, continue to whisk on low for 5-10 minutes until the mixture is fluffy and lightened in color. If the mixture looks split, don't worry it will come together with enough blending. Lastly, add the vanilla extract to the buttercream and continue to whisk for a couple of minutes until combined.

Ways in which to use Swiss meringue buttercream

Storage instructions

You can store this vegan buttercream in an airtight container in the fridge. It will harden when chilled, so before use, allow it to come to room temperature until it comes back to a creamy consistency.

More Vegan Frosting Recipes

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Vegan Swiss Meringue Buttercream

4.9 from 19 votes
PREP TIME: 30 mins
TOTAL TIME: 30 mins
Servings: 16
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Description

This creamy smooth vegan Swiss meringue buttercream made with just 4 ingredients and ready in under 30 minutes! It's great for frosting layer cakes, cupcakes and sheet cakes, while being completely eggless and dairy free.

Ingredients

  • 9 tablespoons (133 g) aquafaba, *see recipe notes
  • 1 cup (220 g) caster sugar, (superfine)
  • 8.8 oz (250 g) vegan block butter , room temperature, cut into 1" chunks
  • 1 teaspoon vanilla extract

Instructions

  • Add the aquafaba and sugar to a large bowl and place the bowl on top of a saucepan with a few inches of water in the bottom - this is known as a bain-marie (water bath). Bring the temperature up to medium and allow the mixture to heat for a few minutes until the sugar is dissolved.
  • Remove the bowl from the heat and use an electric whisk (or transfer the syrup into your stand mixer) and beat on high speed for 15-20 minutes until the mixture is completely cooled and glossy. The mixture should be stiff and glossy and should stay in the bowl if you turn it upside down (carefully!).
  • Start slowly adding the chunks of butter to the meringue, one at a time, allowing the mixture to incorporate for about 5 seconds between each one. The mixture will flatten as you add the butter, just continue to add the butter as it will stiffen when the full amount of butter is incorporated.
  • Once all the butter has been added the mixture be thick like buttercream, continue to whisk on low for 5-10 minutes until the mixture is fluffy and lightened in color. If the mixture looks split, don't worry it will come together with enough blending.
  • Lastly add the vanilla extract to the buttercream and continue to whisk for a couple of minutes until combined.

Storage

  • You can store this buttercream in an airtight container in the fridge. It will harden when chilled, so before use, allow it to come to room temperature until it comes back to a creamy consistency.

Notes

  • Aquafaba: The liquid part from tinned chickpeas. 

 

 

Nutrition

Calories: 145kcal | Carbohydrates: 14g | Protein: 1g | Fat: 10g | Saturated Fat: 3g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 4g | Trans Fat: 1g | Sodium: 105mg | Potassium: 39mg | Sugar: 13g | Vitamin A: 595IU | Calcium: 12mg | Iron: 1mg
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