Why It Works
- Organic powdered sugar still contains a portion of its natural molasses content, lending depth of flavor to this otherwise simple frosting.
- When too warm or cool the butter will not aerate as it should, making the buttercream seem dense and greasy or soft. Starting with butter at 65°F/18°C provides a safe margin of error, as the frosting will warm as it whips.
- A small portion of heavy cream helps the powdered sugar dissolve, and improves aeration.
This quick and easy frosting comes together in less than 10 minutes, with just five ingredients—including salt and vanilla! With a recipe this simple, details matter, so use the best ingredients and be patient when whipping the frosting to ensure that it's as light and fluffy as can be.
- 12 ounces unsalted butter, softened to about 65°F/18°C (3 sticks; 340g)
- 12 ounces organic powdered sugar, preferably tapioca based, such as Wholesome; see note (about 3 cups, spooned; 340g)
- 2 teaspoons vanilla extract
- 3/4 teaspoon (3g) Diamond Crystal kosher salt; for table salt, use about half as much by volume or the same weight
- 3 ounces (85g) heavy cream, straight from the fridge
- Other extracts or gel-paste food coloring, such as Americolor, to taste
Place the butter in the bowl of a stand mixer, then sift the powdered sugar on top. Fit the machine with a paddle attachment, and mix on low until the powdered sugar is fully incorporated. Add vanilla and salt, then increase speed to medium and beat until the frosting is airy and light, pausing along the way to scrape the bowl and beater as needed. This will take about 6 minutes, although the exact timing will vary depending on the power of the machine. During this time, the mixture will have warmed to approximately 70°F (21°C).
Reduce speed to low, then drizzle in the cream. When fully incorporated, pause to scrape the bowl and beater, then continue beating a few seconds more on medium speed. Taste and adjust salt and vanilla as needed, or add whatever other extracts or gel colors are desired. Use immediately.
Stand mixer, non-reactive sieve, flexible spatula
If you don't have organic powdered sugar on hand, conventional powdered sugar will be fine; just add 1/2 teaspoon of plain, unsulfured molasses (not blackstrap) along with the salt and vanilla to create a similar depth of flavor. Check out our guide to the differences between conventional and organic powdered sugar for more detail.
Make-Ahead and Storage
This frosting is best used right away.