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    Home » Recipes » Brownies

    Super Quick Thick Brownie Frosting

    By Erin Clarkson on Oct 16, 2022 (updated Nov 30, 2025). This post may contain affiliate links.
    5 from 46 reviews
    64 community comments

    Jump to Recipe·Trust With Google

    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!

    close up of frosted brownies

    I love a good homemade brownie recipe - they are rich, fudgy, and super easy to make. I am married to someone who thinks that adding a simple chocolate icing onto basically anything will make it better - especially to my fudgy brownies.

    In our house, we call this brownie frosting 'shitty chocolate icing' - as in, the super quick, thick, chocolate icing that our Mums used to make as kids.

    It's just the best - comes together in five minutes, and goes well on everything. Rich has been asking me to put in on the blog for years now, and now I have finally found an appropriate name for it, here we are - the perfect chocolate frosting for brownies.

    This easy brownie icing is everything you need for that perfect, thick, crusty icing that brings back an instant hit of nostalgia. It's not super smooth - it sets with a delicate crust, and is just the best thing ever.

    I love using this recipe to make frosted brownies - I also use a slightly thinner version on my cosmic brownie recipe, but it is not just an icing for brownies - you could also use it to finish off my easy banana bread, or as a simple finish to my chocolate chip cookie bars.

    bowl of chocolate brownie frosting
    chocolate frosting on brownie

    How to get clean slices on a brownie

    Here are a few top tips to make sure you get a perfect cut on your brownie:

    • Make sure the brownies are properly chilled. I like to make sure that both the brownie and the chocolate frosting are set. If you don't like cold brownies, you can leave them out after you cut them and they will come back to room temperature.
    • Use a super sharp knife. This is important for getting a clean cut on anything.
    • Cut in one motion - I use a knife with a large blade and push down evenly rather than levering the knife down.
    • Wipe the blade between cuts. I don't use a warmed blade, but if needed I do rinse it and dry well between cuts.

    My Top Brownie Tips

    • Get all my tips and tricks on how to get the perfect crinkly brownie top in my fudgy homemade brownie recipe.
    • Plus, follow this easy Instagram video tutorial to cleanly cut homemade brownies!
    Fudgy brownies on wax paper with frosting

    ❤️ Made this recipe and love it? ❤️

    I would LOVE for you to leave me a review and star rating below to let me know how you liked it! Also, please make sure to tag me on Instagram!

    Answers to your baking questions

    Over the years, many of you have asked me questions about:

    • baking in grams
    • adjusting oven temperatures
    • what kind of salt to use
    • and many more!

    I've curated and answered them all for your easy reference in this frequently asked questions post!

    Print
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    close up of frosted brownies

    Super Quick Thick Brownie Frosting

    5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 46 reviews
    • Author: Erin Clarkson
    • Prep Time: 5 minutes
    • Total Time: 5 minutes
    • Yield: 16 servings 1x
    • Category: Frosting
    • Method: One Bowl
    • Cuisine: American
    Print Recipe
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    Description

    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!


    Ingredients

    Scale
    • 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)

    Instructions

    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.

    Did you make this recipe?

    Tag @cloudykitchen on Instagram and use the hashtag #cloudykitchen

    Key Ingredients

    • Chocolate
    « How to Freeze Cookie Dough and Bake From Frozen
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    Filed Under: Base Recipes, Brownies, New Zealand Recipes

      Leave a comment & rating, or ask a question Cancel reply

      If you made this recipe then I would love for you to leave me a review below to let me know how you liked it! If you have recipe questions please feel free to leave them below too!

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      Comments

    1. Michelle Y says

      October 24, 2026 at 1:17 am

      Nothing shitty about this! So easy to make and delicious - thank you 🙏

      Reply
    « Older Comments
    Erin Clarkson Cloudy Kitchen

    HI, I'M ERIN

    My recipes range from quick & easy all the way to complex & impressive. I love the science and process of recipe development almost as much as baking itself. I specialize in rigorously tested recipes that are fun, reliable, and accurate.

    More about me →

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