Ermine Frosting

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Ermine Frosting, traditionally known as milk frosting, flour buttercream, or colloquially the “$300 frosting,” presents a luxuriously smooth texture, making it a superior choice for those who appreciate a refined taste. This frosting type stands out by using a cooked base of milk and flour, enriched with butter and sugar, creating a sweet, velvety spread ideal for cakes and cupcakes.

Ermine Frosting

Prep Time: 15 minutes

Cook Time: 5 minutes

Total Time: 20 minutes

Ermine Frosting, also known as milk frosting, flour buttercream, or $300 frosting, is a luxuriously smooth frosting made from a cooked milk and flour base combined with sugar and butter. It’s delightfully sweet and perfect for topping cakes and cupcakes!


1 cup (245 g) whole milk

5 tablespoons all-purpose flour

1 cup (2 sticks / 227 g) unsalted butter, room temperature

1 cup (200 g) granulated sugar

1 teaspoon vanilla extract


In a medium saucepan over medium heat, whisk together the milk and flour. Cook, whisking constantly, for 3-5 minutes, or until the mixture thickens and becomes smooth, resembling thick pudding. It should coat the back of a spoon. Remove from heat and allow to cool to room temperature.

In the bowl of a stand mixer fitted with the paddle attachment, cream the butter and sugar together on medium speed until light and fluffy, about 2-3 minutes. Use a rubber spatula to scrape down the sides of the bowl occasionally.

Add the cooled milk mixture to the butter mixture. Beat on medium-high speed until the frosting is light and fluffy, about 2-3 minutes, scraping down the sides of the bowl as necessary.

Switch to the whisk attachment. Add the vanilla extract and beat on high for another 7-8 minutes, or until the frosting is smooth and creamy.

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