Thursday, March 1, 2012

Raspberry Buttercream

As soon as I saw this recipe online, I knew my day would not pass before I had made it. My sister and I have been obsessed with making raspberry coulis for some time now--watching that magic tool, the fine-mesh strainer, turn seedy sauce into smooth ruby liquid. We've used it on pavlova, cheesecake, and coeur a la creme, but before this recipe, I hadn't considered the possibilities of whipping it with fat and sugar into a luxurious, tangy buttercream.

Courtesy of Brenda of A Farmgirl's Dabbles, I give you...  

Raspberry Buttercream.

  • 1/2 c. unsalted butter, at room temperature
  • 12 oz. raspberries, fresh or frozen
  • 1/2 tsp. freshly squeezed lemon juice
  • 3-1/2 c. powdered sugar
  • pinch of kosher salt
  • 1 to 2 T. milk, if needed to thin out the frosting   
Cook the raspberries in a medium saucepan over medium heat, stirring frequently until the raspberries are broken down into a sauce. Pour the sauce through a fine mesh strainer to remove the seeds, and then pour the raspberry sauce back in the pot. Simmer until the sauce reduces to a 1/4 cup. It will be a very rich red and concentrated sauce. Set aside to cool. With a mixer, cream the butter with a paddle attachment on medium high speed about 2 minutes, until lightened in color and a bit fluffy. Add 2 cups of powdered sugar, the 1/4 cup of cooled raspberry sauce, lemon juice, and salt. Mix until smooth. Add another 1-1/2 cups of powdered sugar and mix until smooth. If you want the frosting less stiff, add some milk, 1 tablespoon at a time. 

Frost whatever you wish! (Shown in this post on a prepared Dr. Oetker organic brownie mix.)

Edit: After tasting and re-tasting this recipe, and observing how it held up overnight, I actually wish I would have listened to my instincts and made this a truer buttercream by adding another stick of butter. Yes, another complete stick. If you look at a variety of buttercream recipes (like this and this), you'll find that if you're using over 3 cups of powdered sugar, the recipe should also contain at least 1 cup of butter, and this raspberry recipe only contains a 1/2 cup. Adding more butter would make the icing fluffier and more melt-in-your-mouth, though you might have to store it in the fridge. As it is, it's delicious, but extremely pasty-sweet because of the excess of powdered sugar.

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