Description
Light, fluffy marshmallow frosting made by gently heating egg whites and sugar over simmering water, then whipping to glossy stiff peaks. Perfect for frosting cupcakes or cakes, this marshmallow frosting is silky, sweet, and holds its shape beautifully.
Ingredients
Scale
Marshmallow Frosting Ingredients
- 4 large egg whites (room temperature)
- 1 cup granulated sugar
- 1/4 teaspoon cream of tartar
- 1 teaspoon pure vanilla extract
- Pinch of salt
- Optional: 1/2 teaspoon almond extract
- Optional: 1/4 teaspoon lemon juice
Instructions
- Prepare a double boiler: Fill a saucepan with 2 inches of water and bring it to a simmer. Make sure the water does not touch the bowl that will be placed on top.
- Combine ingredients and heat: In a heatproof bowl, combine the egg whites, granulated sugar, cream of tartar, and a pinch of salt. Place the bowl over the simmering water, ensuring it doesn’t touch the water, and whisk constantly for 4–5 minutes until the sugar dissolves and the mixture reaches 160°F (71°C). Test smoothness by rubbing a bit between your fingers.
- Whip the mixture: Transfer the warm mixture to a stand mixer or use a hand mixer. Beat on high speed for 6–8 minutes until the frosting forms stiff, glossy peaks and the bowl feels cool to the touch.
- Add flavorings: Mix in the vanilla extract and any optional almond extract or lemon juice. Beat for an additional 30 seconds to fully combine the flavors.
- Use or store the frosting: Use the frosting immediately by piping or spreading it on cupcakes or cakes. If you need to store it, refrigerate in an airtight container for up to 2 hours. Whisk again briefly before using to restore its texture.
Notes
- Ensure egg whites are at room temperature to achieve maximum volume.
- Use a candy thermometer to accurately monitor the temperature for safety and texture.
- If the frosting becomes too thick after refrigeration, gently whisk it again to bring back its fluffiness.
- This frosting is ideal for cupcakes and cakes but not recommended for extended storage beyond 2 hours in the fridge.
- For variations, add different extracts such as almond or citrus for a unique flavor twist.
