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close up of frosted brownies

Super Quick Thick Brownie Frosting

  • Author: Erin Clarkson
  • Prep Time: 5 minutes
  • Total Time: 5 minutes
  • Yield: 16 servings 1x
  • Category: Frosting
  • Method: One Bowl
  • Cuisine: American


Super quick Brownie Frosting comes together in less than five minutes with only four ingredients. It is super thick, and the perfect frosting for brownies!


  • 190g powdered sugar, sifted
  • 20g cocoa, sifted
  • Pinch of salt
  • 45g unsalted butter, at room temperature, cut into small pieces
  • 25g freshly boiled water (weigh after boiling)


  1. Combine the powdered sugar, cocoa, and salt in a medium bowl, then add the butter and mix until it is coated. Add the boiling water, and mix with a spatula until the butter is incorporated and the mixture is homogenous.
  2. Switch to a whisk if needed to get any lumps or remaining pieces of butter. 
  3. Use immediately - this is a crusting frosting so it does not store well and needs to be used straight away.

Keywords: Brownie Frosting, chocolate frosting, brownie icing