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Blackberry Buttercream

This blackberry buttercream is bursting with delicious flavor and is perfect for filling, frosting, and decorating all your favorite treats.
Course Dessert

Ingredients

Buttercream Ingredients:

  • 1 cup 2 sticks dairy-free unsalted butter, at room temperature
  • 3 1/2 cups powdered sugar
  • 1 tablespoon pure vanilla extract
  • 1/4 cup blackberry purée

For the Blackberry Purée:

  • 2 cups fresh blackberries
  • 1 tablespoon lemon zest
  • 1 tablespoon lemon juice
  • 2 tablespoons light brown sugar
  • 2 tablespoons vegan vanilla protein powder or 1 tablespoon cornstarch

Instructions

Make the Blackberry Purée:

  • In a medium saucepan, combine the blackberries, lemon zest, lemon juice, and brown sugar.
  • Cook over high heat until the mixture starts to boil. Use a fork to mash the berries as they cook.
  • Stir in the protein powder or cornstarch and continue cooking for 10-15 minutes, or until the purée thickens.
  • Remove from heat and transfer the purée to an airtight container. Refrigerate until cooled.

Make the Buttercream:

  • In a stand mixer fitted with the paddle attachment, cream the butter on medium-high speed until it becomes light and creamy.
  • Turn the mixer to low and gradually add the powdered sugar, scraping down the sides of the bowl after each addition.
  • Add the vanilla extract and cooled blackberry purée. Mix on low speed for another 1-2 minutes, or until everything is fully incorporated and the buttercream is smooth.