Swiss Meringue Buttercream tastes silky, lightly sweet, and buttery with a clean finish. It suits bakers who want a stable, pipeable frosting for cakes and cupcakes, and you can finish a batch in about 30 to 40 minutes. I once ate it straight off a spoon behind my stand mixer and felt zero shame.
Why You Should Try This Swiss Meringue Buttercream
Swiss Meringue Buttercream Recipe gives you professional results at home with a texture that spreads like satin and pipes like a dream. It holds up better than American buttercream, tastes less sweet, and takes on flavors beautifully. You can pair it with nearly any cake style, from rustic swoops to razor-sharp edges.
Ingredients You’ll Need
- 5 large egg whites, about 150 g
- Fresh egg whites whip best. Good-quality pasteurized carton whites can work, but check the label for “whips well.”
- 1¼ cups granulated sugar, 250 g
- Superfine sugar dissolves faster, so use it if you have it.
- 3 sticks unsalted butter, 340 g, room temp and slightly cool to the touch
- I like European-style butter for richer flavor. If your kitchen runs warm, use standard American butter since it stays a bit firmer.
- 2 teaspoons pure vanilla extract or 1 teaspoon vanilla paste
- ¼ teaspoon fine sea salt
- Optional flavors: 85 g melted and cooled dark chocolate, 2 to 4 tablespoons fruit puree or jam, 1 to 2 teaspoons espresso powder dissolved in 1 tablespoon hot water, or 2 to 3 tablespoons salted caramel
- Optional stabilizer: ⅛ teaspoon cream of tartar
Equipment:
- Stand mixer with whisk and paddle attachments, or a sturdy hand mixer
- Heatproof bowl that fits snugly over a saucepan
- Medium saucepan with 1 inch of simmering water
- Instant-read thermometer
- Rubber spatula
- Kitchen scale and measuring cups
- Clean towel and a splash of vinegar or lemon juice to wipe any grease from the bowl
How to Make Swiss Meringue Buttercream
Prep the gear
- Wipe the mixing bowl and whisk with a bit of vinegar or lemon juice on a paper towel to remove any grease.
- Cut the butter into tablespoon-size chunks so it softens evenly.
Warm the whites and sugar
- Add egg whites, sugar, and cream of tartar if using to the heatproof bowl.
- Set the bowl over the saucepan with gently simmering water, then whisk constantly until the mixture reaches 160 F or 71 C, 5 to 7 minutes.
- Rub a little between your fingers. If you feel no sugar grains, you nailed it.
Whip the meringue
- Move the bowl to the mixer and whisk on high until glossy, stiff peaks form and the bowl feels cool, 8 to 10 minutes.
- Aim for the meringue temperature to drop to about 75 F to 80 F. Hot meringue plus butter turns soupy fast, so give it time.
Add the butter
- Switch to the paddle attachment. Add the butter one piece at a time on medium speed, letting each piece blend before adding the next, 5 to 7 minutes total.
- The mixture might look curdled or soupy during this stage. Keep mixing and it will come together. If it still looks loose after a few minutes, chill the bowl for 10 minutes, then continue mixing.
Flavor and finish
- Mix in vanilla and salt. Add any optional flavors and beat until smooth.
- Reduce speed to low and run for 1 minute to smooth out air bubbles.
Use or color
- For coloring, use gel food coloring a drop at a time. Beat on low to distribute color evenly.
Tips & Tricks
- Weigh ingredients for best consistency.
- Keep everything grease-free. Even a little fat in the whites weakens the meringue.
- Control temperature. Cool the meringue before butter, and keep butter cool yet pliable.
- Fix curdled texture by mixing longer. Fix soupy texture by chilling the bowl for 10 minutes, then beat again.
- Add flavor gently. For fruit, use thick puree or jam to avoid thinning the buttercream.
- Color with gel or powder, not liquid, to keep the texture firm.
- Soften a too-firm batch with a quick 5- to 8-second burst of warm air from a hair dryer on the outside of the bowl, then mix.
- Smooth a crumb coat by resting the frosted cake in the fridge for 15 minutes, then apply the final coat.
What to Serve with Swiss Meringue Buttercream
Layer it on vanilla sponge, chocolate cake, funfetti, or red velvet. It loves company from fillings like raspberry jam, lemon curd, or peanut butter ganache. I also pipe it on cupcakes and macarons, then finish with a sprinkle of flaky salt or a drizzle of chocolate. For a showstopper, pair it with a chocolate drip and fresh berries.
Make-Ahead and Storage
- Room temp: Keep covered at cool room temperature for up to 2 days.
- Fridge: Store in an airtight container for up to 1 week. Bring to room temperature, then beat with the paddle for 1 to 3 minutes until silky.
- Freezer: Freeze for up to 2 months in a zip-top bag or container. Thaw overnight in the fridge, bring to room temp, then rewhip.
- Best way to revive texture: If it looks curdled, keep mixing until smooth. If it looks too stiff, warm 2 tablespoons of the buttercream in the microwave for 5 seconds, then stream it back in while mixing on medium. If it looks soupy, chill 10 minutes and beat again.
How to Make Swiss Meringue Buttercream
Swiss Meringue Buttercream is a silky, not-too-sweet frosting made by gently heating egg whites and sugar, then whipping them into a glossy meringue before adding butter.
Ingredients
Instructions
- Fill a saucepan with a few inches of water and bring it to a gentle simmer over medium-low heat. Place a heatproof mixing bowl on top, making sure the bottom of the bowl does not touch the water.
- Add the egg whites, granulated sugar, and salt to the bowl. Whisk continuously until the sugar is fully dissolved and the mixture reaches 160°F (71°C), about 5–7 minutes. Rub a little between your fingers; it should feel completely smooth.
- Remove the bowl from the heat and transfer it to a stand mixer fitted with the whisk attachment. Whip on medium-high speed until the mixture forms stiff, glossy peaks and the bowl feels cool to the touch, 8–10 minutes.
- Switch the mixer to medium speed. Add the softened butter a few cubes at a time, allowing each addition to incorporate before adding more. The mixture may look curdled at some point; keep mixing and it will become smooth and creamy.
- Once all the butter is incorporated and the buttercream is smooth, beat in the vanilla extract until fully combined. If the buttercream seems too soft, chill for 10–15 minutes, then re-whip briefly before using.
- Use immediately to frost cakes or cupcakes, or store in an airtight container in the refrigerator for up to 1 week. Bring to room temperature and re-whip before using.
Notes
Nutrition Information
Approximate per serving (about 2 tablespoons): 130 calories; fat 11 g; saturated fat 7 g; carbohydrates 8 g; fiber 0 g; sugars 8 g; protein 1 g; sodium 20 mg. Values will vary based on exact ingredient brands, measurements, and portion size.
Approximate per serving (about 2 tablespoons): 130 calories; fat 11 g; saturated fat 7 g; carbohydrates 8 g; fiber 0 g; sugars 8 g; protein 1 g; sodium 20 mg. Values will vary based on exact ingredient brands, measurements, and portion size.