Homemade Italian Meringue Buttercream Frosting Recipe
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Italian Meringue Buttercream is creamy, silky smooth, and much lighter than American versions. Perfect for piping and fine details, Italian buttercream is also delicious enough to eat with a spoon!
I love the soft peaks of this silky smooth buttercream. I’m not a pastry chef, but I do play one when it comes to making this yummy frosting.
The first time that I whipped up this recipe, I couldn’t believe how simple it was and how good it turned out!
The first step to creating this sweet treat is to make sure that you have all the simple ingredients needed – and then follow the steps on the recipe card.
In just a little bit of time, you’ll be staring at your bowl of meringue goodness!
Table of Contents
Italian Meringue Buttercream
Perfectly sweet and luscious, use this Italian meringue buttercream recipe to add style and elegance to all of your baked goods while enhancing the flavor.
Whether you are a beginner when it comes to baking or consider yourself a culinary wizard, you will love this Italian buttercream frosting.
You can top cakes, cookies, and pastries — and the result is pure perfection.
If you love this Italian buttercream, you really need to try my chocolate buttercream. It’s positively dream-worthy!
Craving more sweet goodness? Take a look at all my delicious desserts for inspiration. Hint…my tiramisu ice cream cake is one of the best things you’ll ever taste.
Ingredient Notes and Substitutions
- Egg Whites – Carefully separate the eggs so there’s not even a spot of yolk, or the recipe won’t work.
It’s easiest to separate eggs when they are chilled, but the whites whip up better when they are room temperature. (and don’t toss out the leftover egg yolks – use them in another recipe so you don’t waste them!)
- Butter – Unsalted is preferred for this Italian meringue recipe since the amount of salt can vary by brand.
Don’t have unsalted butter? No problem, swap it for salted instead. It will still taste incredible and be easy to work with. - Cream of Tartar – The secret ingredient in any Italian meringue buttercream! It’s one of the key ingredients in perfecting this German buttercream.
This helps to stiffen the egg whites and creates more volume for the perfect, fluffy texture. Having stiff peaks is key!
A pinch of salt is the best substitute (only if using unsalted butter!), but an equal amount of lemon juice or vinegar would work too.
Tips for Making Italian Buttercream
- Make sure your bowls and equipment are spotless!
Any bit of egg yolk or grease will prevent your Italian buttercream frosting from setting up.
Wash and dry your mixing bowl thoroughly and wipe down the mixer with lemon juice or vinegar if it’s greasy.
- A measuring cup saves you a headache.
While it is acceptable to pour the sugar mixture directly into the egg whites from the pan, it’s much easier to accomplish if you transfer it to a measuring cup first.
This way, you are less likely to have a mess. This will also help to ensure that you’re making this meringue-based buttercream perfectly.
- Cooling is key.
Don’t get in a rush and skip cooling the meringue before you add the butter. Otherwise, the butter will melt!
Cool it faster by adding an ice pack or cold cloth to the outside of the bowl. This is a must or the end result won’t happen how you want.
- Don’t let it get too warm.
Though Italian meringue buttercream is the most stable of all the buttercreams, you can’t let it sit out for too long.
When it softens, put it in the refrigerator to firm it back up. This is important to remember during hot weather!
Italian Meringue Recipe FAQ
Leftover buttercream need to be stored in the fridge in an airtight container or gallon freezer bag. They will last up to 5 days in the fridge.
You can also make a double batch of this Italian meringue recipe and freeze the leftovers to have on hand for later. It will last in the freezer for up to 3 months.
Just remember to thaw Italian buttercream frosting to room temperature, then whip it using a mixer to make it fluffy again. You don’t have to use a whisk attachment or paddle attachment for this, just a whisk and a bowl of stand mixer or large mixing bowl work well.
Yes — it’s easy to tint any frosting, and the color options are endless!
Use a good quality gel food coloring. Stay away from liquid food coloring, because it will make the frosting appear speckled and affect the overall texture.
For an Italian meringue buttercream recipe, you make a sugar syrup and pour it into the egg whites.
However, with Swiss buttercream, you heat the sugar and egg whites together and whip them into a meringue.
Yes, you really do. The mixer speed is key because the highest speed is what helps get that stiff fluffy texture and peaks. I always use my mixer and scrape the sides of the bowl and the bottom of the bowl so that everything gets combined perfectly.
You’ll vary the mixer from high speed to medium speed to low speed, so pay attention to the directions. Make sure that the mixer bowl is clean, and after adding all the ingredients, you’re ready for the final step of mixing.
And yes, you’ll often find me scraping the goodness of the bowl of a stand mixer – but that’s the perk of being the cook!
Enjoy!
With love, from our simple kitchen to yours.
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Homemade Italian Meringue Buttercream Frosting Recipe
Ingredients
- 5 large egg whites, at room temperature
- 1/8 teaspoon cream of tartar
- 1 1/3 cups granulated sugar
- 2/3 cup water
- 2 cups unsalted butter, softened (4 sticks), cut into ½” cubes
- 1 teaspoon vanilla extract
Instructions
- In the bowl of a standing mixer, add egg whites and begin beating on medium speed until the egg whites become foamy.
- Add cream of tartar to the egg whites and continue beating until the form stiff peaks – hold their shape.
- Meanwhile, in a saucepan, combine sugar and water. Heat over medium-high heat, stirring until all of the sugar granules are dissolved.
- Continue heating the sugar mixture until the temperature reaches 238-240°F (the soft-ball stage).
- Transfer the sugar syrup to a measuring cup or something that allows you to pour it easily in a thin stream.
- With the mixer running on low speed, pour the sugar syrup in a very thin stream into the stiff egg whites.
- Mix on low until all of the sugar syrup has been incorporated. The egg white mixture will now appear glossy and stiff like meringue.
- Continue mixing on medium speed until egg whites have cooled completely (feel the bowl to make sure no warmth remains).
- When the meringue has cooled, add the butter – 1-2 cubes at a time. Mix each tablespoon into the meringue completely before adding the next couple cubes.
- Continue adding 1-2 cubes of butter at a time until it is all combined.
- Scrape down the sides of the bowl and switch to the paddle attachment. Add vanilla extract.
- Beat on low speed using the paddle attachment for several minutes to beat the air out of the buttercream. The buttercream may appear curdled at first, but it will beat out into a smooth, luscious frosting.
- To frost cupcakes with a swirl, fit a large piping bag with cake decorating tip #1M.. Fill the piping bag with buttercream. Pipe buttercream onto cupcakes in a counter-clockwise direction, swirling up and toward the center.
Nutrition
All nutritional information is based on third party calculations and is only an estimate. Each recipe’s nutritional value will vary depending on the ingredients used, measuring methods, and portion sizes.
Originally published August 2021, updated and republished October 2024
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We’re Donna and Chad, the dream team behind The Slow Roasted Italian. Our focus is on taking complicated OUT of the kitchen. Life is busy enough, making meals should be fast and easy, to help make your life as simple as possible. Read More >>
Can you use the egg whites in the carton that are pasteurized to avoid salmonella from the raw egg whites?
The addition of the very hot sugar syrup to the meringue makes it safe to eat. As for the egg whites in the carton, you will need to add an acid such as lemon juice or cream of tartar and it will take a VERY long time to whip and the meringue will not be as stiff or have volume. That is why carton egg whites are not recommended for meringue.
Can you use honey instead of sugar?
A very sweet and light buttercream. I like this recipe a lot
Will need to refrigerate my cake after frosting it with this?
I’ve been looking for this recipe forever. Years ago I tooka decorating class and this was the recipe the instructor gave us. My ex destroyed all my things. So happy to find this!
I do not have a stand mixer and I do not have a “paddle” attachment. Can this recipe be made with a “hand” mixer with “normal” blades? If so, what would I need to know that would be different in the outcome?
Does cake need to be refrigerated when using this frosting?
Hi Lin,
Yes, you will need to keep it refrigerated. Have a great day!
TSRI Team Member,
Holli
This recipe is a total game-changer! Italian meringue buttercream has never been this easy to make at home.
Hi Amaya!
We’re so glad you enjoyed!
TSRI Team Member,
Devlyn