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Buttermilk Brownies with Buttermilk Chocolate Frosting

5 from 2 votes
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Prep Time: 25 minutes
Cook Time: 20 minutes
Total Time: 45 minutes
Servings: 16
Author: Swah

Ingredients

Buttermilk Brownies

  • 120 g butter
  • 1/3 cup unsweetened cocoa powder
  • 1/2 cup vegetable oil
  • 1 cup caster sugar
  • 1/2 cup brown sugar
  • 2 eggs
  • 1/4 cup buttermilk
  • 1/2 tsp vanilla extract
  • 2 cup plain flour
  • 1 tsp baking soda
  • 1/2 tsp salt
  • 1 cup white chocolate chips

Buttermilk Chocolate Frosting

  • 120 g butter
  • 1/2 cup buttermilk
  • 1/2 cup dark chocolate unsweetened cocoa powder
  • 3 cups icing sugar

Instructions

  • Preheat oven to 200°C. Line a 20 cm pan with baking paper.
  • In a medium saucepan, combine the butter, cocoa powder and vegetable oil over medium-high heat until it just comes to the boil. Remove from the heat and set aside to cool down slightly.
  • Next, combine the sugars, eggs, buttermilk and vanilla in a large mixing bow
  • Slowly whisk in the melted butter mixture.
  • Add in flour, baking soda and salt, and stir just until combined. Fold in the white chocolate chips.
  • Pour into lined tin and bake for 20 minutes. Set aside to cool down.

Buttermilk Chocolate Frosting

  • Meanwhile for the frosting, add the butter, cocoa powder and buttermilk to a saucepan over medium-high heat and stir until combined.
  • Transfer melted mixture to a mixing bowl and whisk in icing sugar gradually until the frosting is smooth and thick.
  • Pour the frosting over the brownies (they don't have to be completely cooled yet) and smooth with an offset spatula.
  • Put the frosted brownies in the fridge for a few hours until set, then cut into 16 squares and enjoy!