You will LOVE the silky smooth, light consistency and buttery flavor of this Swiss Meringue Buttercream frosting recipe.
American Buttercream vs. Swiss Meringue Buttercream Frosting
For most of the cake decorating tutorials and recipes on my site, I use American Buttercream frosting (for example, Classic Vanilla Buttercream).
American Buttercream recipes are very easy to make, using simple combination of butter, confectioner's sugar, milk, and flavorings. These are often crusting buttercream recipes that are slightly denser, sweet, and are perfect for piping.
The first time I tried Swiss Meringue Buttercream frosting, I fell in love with the ultra smooth, melt-in-your-mouth quality of this frosting. It is less sweet than American Buttercream, and has a fantastic flavor.
Does Swiss Meringue Buttercream Develop a Crust?
No, Swiss Meringue Frosting is not a crusting recipe, and so the Viva Paper Towel Method of smoothing will not work for this frosting, but it does pipe nicely and can be used beneath fondant (when chilled).
If you've never tried Swiss Meringue Frosting, you MUST give it a try at least once! The process takes a bit longer but the resulting frosting is heavenly! It may just become your new favorite!
Swiss Meringue Buttercream

Delicious Swiss Meringue Buttercream! This recipe makes a great filling or frosting and pipes perfectly!
Ingredients
- 3 sticks unsalted butter (12oz. 339g) *At Room Temperature
- 5 egg whites ( ¾ cup, 168g)
- ½ teaspoon (2g, ⅛oz) cream of tartar
- 1 cup ( 205 g) granulated sugar
- 2 tablespoon (21g) vanilla extract
Instructions
Place the egg whites, cream of tartar, and sugar in a heat proof bowl (I use my kitchen aid mixing bowl). Put this over a pot of simmering water, whisking by hand until a candy thermometer attached to the side of the bowl registers 140 degrees.
Transfer this to your mixer and put in the whisk attachment. Whip on medium high speed until it reaches stiff peak stage This could take about 10 min. The bottom of the bowl will cool off . The mixture will become fluffy and glossy.
While the meringue is beating, cut the butter into tablespoon sized pieces.
When the meringue is ready, put the paddle attachment on the mixer and add the butter a few pieces at a time while beating on low speed.
Add vanilla
The mixture may look like it is separating after you add the butter. Don’t worry, just continue beating on medium-high speed and it will become smooth again.
You can use immediately ….refrigerate in an airtight container for 5 days or freeze for 1 month. If frozen, bring to room temp and beat with paddle attachment on low speed until it is smooth again…..3 to 5 minutes
*Make sure to check out our full listing of tried and true recipes for our favorite Cakes, Cupcakes, Fillings, and Frostings in our Recipes Section!
Hi Terri Tate, I am sorry this has caused you worry. Yes, Swiss Meringue Buttercream is used under fondant. As when using American buttercream it is good to chill your frosted cake before laying on the fondant? Chilling makes it easier to lay on the fondant. Even if you did not and your caked looked good when completed (and it sounds like it did) there will be no problem for your customer. As for your question on putting extra frosting, you may need to do that when trying to create a completely smooth surface. Just put your cake tier in the freezer or refrigerator for a quick chill after being frosted. It is chilled when you can touch it but it does not leave a fingerprint. Take out of the refrigerator and smooth with your bench scraper to get a smooth look. You can repeat that process is needed to get the frosting as smooth as you would like. When you have it smoothed you can put it back in the freezer while you roll out your fondant. You may need to lightly brush the cake with water or a simple syrup to help the fondant stick to the frosted cake. Hope this is clear, let us know if you have other questions.
Hello ladies, the cake came out fine but I️ now know to tefeigerate prior laying down my fondant. But is it possible to mix Swiss buttercream with your fluffy buttercream? I️ absolutely love the taste of the Swiss but love the crusting of the fluffy bc. Just wondering if you ever tried it before I️ try...thanks in advance!
Thanks for the recipe. Pls can this recipe cover 8 inches cake, or do I have to double it?. Thank you
Hi Anita, The recipe will make 4 to 4 1/2 cups. It will cover a 2 layer 8 or 9 inch cake with a simple frosting. To fill and frost with decorative piping you will want to make 1 and 1/2 the recipe or double the recipe.
I have never tried swiss buttercream. So there is no powdered sugar?
Hi Peggy, I've seen a recipe or two that does call for powdered sugar, but most do not.
Hi I made smbc which I thought was perfect, nice and silky. I placed in to the refrigerator in an air tight container overnight. I took it out the next morning and let it sit for a couple hours and then I tried beating it. It became very watery. butter separating from liquid. a mess. what went wrong
PLEASE HELP....I made swiss meringue buttercream but while cooking the egg white and sugar I only let temperature reach 110 but all sugar granules we dissolved. Is this frosting safe to use if the temperature did not reach 140 while cooking??? I've already crumb coated the cake.
Hi Carrie, Some bakers do not use a thermometer but say they put a small amount between their thumb and finger, rub together and if they do not feel any sugar granules, all is fine.