One Recipe for Meringue Cookies and Buttercream
Inspired by Georgia's Cakes, I made meringue cookies (a large one in the shape of a wreath) and Swiss meringue buttercream frosting by altering one Swiss meringue buttercream recipe. Super efficient way to make both decorations and frosting for your cake.
To make the exact cake that I made in this video, you'll need to go to my cakeculator and choose:
Lemon Buttermilk Cake
8 inches, 2 layers
I made this a 4 layer cake by slicing each one of those layers in half to give me 4 thin layers of cake.
Step by step:
Video
Read this before you begin
Measure by weight, if possible.
Measuring by weight is the best way for you to replicate my recipes. I develop recipes using ingredients (even liquids) measured in grams, which is why you see them listed first in the recipe cards. For measurements under 5 grams, I will typically only list the volumetric measurements (teaspoons, etc.), as most home scales are not precise for such small weights.
In most cases, I have converted grams to volumetric measurements (aka US customary units) for bakers who prefer this method. However, the measurements are not as precise and may have awkward proportions. The recipes should still work, but for the ultimate precision, try to use weight.
This is the OXO scale I use daily. I also purchased this budget version of a good scale, which I keep at my Mom’s house for baking. If you’re interested in other tools I use for my baking, I’ve compiled a list here.
Use room temperature ingredients.
All my ingredients should be used at room temperature, or 65-75 °F/18-24 °C. I will always indicate if you need something outside this range. If no details are given, room temperature is the default.
Pay attention to the ingredient descriptions.
I try not to be brand-specific, but I will always note an interesting result from a type of ingredient, be it negative or positive.
A specific note regarding salt: I use Diamond Crystal Kosher salt for everything on this site except for frostings. In frostings, you want the salt to dissolve more easily, and kosher salt tends to leave granules behind. If you substitute table salt (more finely granulated) for recipes that list kosher salt, you must use half the volume indicated in my recipes.
Substitutions are hard.
That’s not to say they’re impossible, though. For instance, in many cases, substituting reduced fat for whole milk (and thus reducing fat by less than 2%) will probably be fine. Using applesauce for oil or even Greek yogurt when sour cream is listed will definitely alter the fat content and adversely affect the crumb texture and density of the cake.
I experiment for hours to get these recipes to work for us. First, try to make them as written or use one of my tested substitutions, which I often dedicate a section to. Then, if necessary, you can make modifications afterward. Even then I would be pretty cautious, as substitutions are one of the hardest things to investigate in recipe development.
Read all the recipe instructions before beginning.
I’m in the “Pre-read the Chapter before Class Lecture” club... and I invite you to join! Baking new recipes can be intimidating, so let’s set you up for success. I want you to think about timeframes. Most fillings and frostings can be made ahead of time, and give you an extra day for mental space. Also, as you become a more proficient baker, you can anticipate and recognize steps. (“Oh, this has a meringue step, so I’ll need an extra clean bowl…” etc.) Ensure you go down the ingredient list and have everything at the right temperature.
Meringue Topper and Vanilla Swiss Meringue Buttercream Recipe
- 1 1/2 cups (318g) egg whites, fresh
- 2 1/2 cups + 2 TB (525g) granulated sugar
- 1/4 + 1/8 teaspoon cream of tartar
- 2 1/4 cups (495g) unsalted butter, softened to cool room temp
- 1 teaspoons (4g) vanilla extract
- 1/2 teaspoon (2g) salt
- 1 1/2 cups (318g) egg whites, fresh
- 2 1/2 cups + 2 TB (525g) granulated sugar
- 1/4 + 1/8 teaspoon cream of tartar
- 2 1/4 cups (495g) unsalted butter, softened to cool room temp
- 1 teaspoons (4g) vanilla extract
- 1/2 teaspoon (2g) salt
- Prepare your double boiler. Make sure you can fit your stand mixer (or other heatproof) bowl on the top so that the bottom is exposed to steam but not directly touching the water. Bring the water beneath to a gentle boil.
- Weigh your bowl and write it down.
- To the bowl of your stand mixer (or other heatproof bowl) add egg whites, sugar, and cream of tartar. Mix with a spatula. It will be viscous (pretty gooey) and thick. Place on top of the double boiler and check to make sure that the steam is getting to the bottom of the bowl properly.
- Continuously stir with the spatula. The eggs will thin out, all the sugar will melt, and the mixture will become more opaque. Use a thermometer to make sure you reach 165. Remove from double boiler.
- Place the bowl in a stand mixer fitted with a whisk. Whisk on high speed for 10 minutes.
- Weigh your bowl with the meringue inside, and now subtract out the weight of you bowl. You now have the weight of the meringue. Divide that number by three and remove that amount and place it into another bowl. Leave the remaining amount in the original bowl to make buttercream in a bit.
- TO MAKE THE MERINGUE WREATH:
Preheat your oven to 225F.
Add 1/2 tsp of lemon juice, 1 tsp of cornstarch, and 1/4-1/2 tsp of flavoring to your meringue.
Place parchment on a large baking sheet and trace a circle, using the same exact pan you baked with your cake. Flip the paper over.
Pipe a wreath design, making sure not to go over the line you've drawn.
Place in the oven, immediately turn down the heat to 200F and bake for 1 hour and 15 minutes.
After baking, turn off the oven and leave the meringue in there to cool and rest for another 1 hour and 30 minutes. - TO MAKE THE BUTTERCREAM:
Add in the butter, one TB chunk at a time. The frosting will lose volume at first, and then start to come together and look and feel little like firm freshly whipped cream, leaving tracks in the frosting.
Add your vanilla and salt.
You can use it immediately, store in the fridge for a couple weeks, or the freezer in an airtight container for a couple months.