Chocolate Buttermilk-Frosted Brownies Recipe on Food52 (2024)

Bake

by: Posie (Harwood) Brien

September10,2015

4

11 Ratings

  • Prep time 25 minutes
  • Cook time 40 minutes
  • Makes one 9- by 13-inch pan

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Author Notes

Decadent and intensely fudgy, this brownie uses a riff on the simple one-bowl Baker's chocolate brownie recipe for the base. I topped it with a tangy, sweet chocolate buttermilk frosting. They are better when chilled slightly—but it's hard to wait that long to take a bite! —Posie (Harwood) Brien

  • Test Kitchen-Approved

What You'll Need

Ingredients
  • For the brownies:
  • 4 ouncesunsweetened chocolate
  • 3/4 cupbutter
  • 2 cupssugar
  • 3 eggs
  • 1 teaspoonvanilla extract
  • 1 cupflour
  • For the frosting:
  • 1/4 cupbutter
  • 3 tablespoonsbuttermilk
  • 3 tablespoonsunsweetened cocoa powder
  • 1/2 teaspoonvanilla extract
  • 3 cupsconfectioners' sugar
Directions
  1. Preheat the oven to 350° F. Line a 9- by 13-inch baking pan with foil and grease with butter or baking spray.
  2. In a large glass bowl, microwave the chocolate and the butter on high, checking and stirring after each 30-second interval, until the butter melts (about 2 minutes). Stir until the chocolate is fully melted.
  3. Add the sugar and mix well. Add in the eggs and vanilla and stir until combined. Add the flour and mix until well-incorporated.
  4. Pour the batter into the prepared pan and bake for about 30 minutes. The top should be crackly and a tester inserted into the middle should come out clean. Do not overbake! Remove from the oven and let cool in the pan.
  5. To make the frosting, add the butter, buttermilk, and cocoa powder to a small saucepan. Bring to a boil, whisking until smooth, and then remove from the heat. Transfer to a stand mixer (or large bowl) and add in the confectioners' sugar and the vanilla. Beat the mixture until fluffy and thick. **You might need less or more sugar, depending. Start with 2 cups, and add more if the frosting looks too thin. Also, if it isn't getting fluffy, try refrigerating the frosting for 20 minutes, and then beating it again.**
  6. Spread the frosting over the brownies. Let the frosting set (it is helpful to chill them for a little while in the refrigerator), and then slice and serve.

Tags:

  • Brownie
  • American
  • Chocolate
  • Buttermilk
  • Make Ahead
  • Serves a Crowd
  • Bake
  • Snack
  • Dessert

See what other Food52ers are saying.

  • EmilyC

  • ML

  • Archana Podaralla

  • Kristin Watson Heintz

  • liz andrew

Popular on Food52

42 Reviews

Jon May 27, 2018

These were OK, really no different than any other brownies I’ve made from scratch.

Stephanie S. December 12, 2017

My frosting was grainy! What did I do wrong? Should I have sifted the confectioner’s sugar or maybe I added too much?

I made this recipe gluten-free as well (I have Celiac so there's no other option for me!): Instead of all-purpose flour, I did 1/2 cup cocoa powder, 1/2 cup gluten free flour mix. I added an additional egg and 1/2 tsp. baking powder, and they look perfect! We'll see what my kids think tonight!

EmilyC February 6, 2017

This frosting is SO good!! I made a malted version of it yesterday by decreasing the cocoa just a bit, and adding chocolate malt powder (Ovaltine) to the frosting, to taste. The texture is just perfect for brownies.

Charlotte S. August 20, 2016

Followed the recipe exactly - way too sweet for me. Consistency is nice - fudgy, no baking powder/soda which is traditional. Frosting is tasty, used imported coco powder. Maybe some tart cherries would balance. Sending to the fire station with my husband....

Mary B. May 12, 2017

I agree! Way too sweet. I was thinking that as I added the two CUPS of sugar.

Melissafitz August 12, 2016

So good! My only edit was to add a couple teaspoons of espresso powder to the batter. Excellent frosting -- May become my go-to chocolate fudgey frosting!

ML July 22, 2016

If the frosting is finicky do you think cooling it before you begin to whip it with the confectionery sugar? At first I was thinking you could replace the buttermilk with yogurt, I do not usually have buttermilk in the house until I read the instructions that have you boil the buttermilk with the butter & cocoa. I wonder if this curdling might be the finicky problem? Years ago I had a recipe for frosting that had you make a white roux with milk & flour. Barely cooking it so it did not brown. Then you refrigerated that until cool when ready to make the icing you put in your butter and vanilla with this cooled roux whipped it up and then added the icing sugar. It was a little less sweet but it did not have a smooth texture my family loved it, I should find that recipe in my old recipe box. Now that I know a bit more about cooking and what the chemistry of it could be maybe I can figure out why it was not smooth. Ah well I should stop musing and just bake these brownies. LOL

Archana P. June 14, 2016

I just made it and I love the texture very much. It's not very fudge like but not cake like either. I felt like it could do with a little more chocolate to make it rich. My kids love it. I haven't made the frosting but I think we can finish the brownie very easily. Love it a lot. :-)

Kristin W. May 16, 2016

I needed to make this gluten free and I tend to like rich instead of dark so I took the basic recipe and adjusted it quite a lot. 8oz of chocolate (99% and 70% Scharfenberger - it's what I had), 1 cup sugar, and for the flour I used a 1:1 flour substitute + almond flour + plus cocoa powder until I had 140gms. Came out great! I'm used to cooking GF so I knew the added liquid from the chocolate would be perfect for the GF flours that tend to soak up more liquid.

Kristin W. May 16, 2016

*rich instead of sweet

Alina November 17, 2015

I would love to try this recipe. I personally love to bake anything chocolate ( my family loves chocolate, who doesn't right?) But I was also wondering if maybe this recipe will be good with vanilla ice cream? Or will the ice cream ruin the topping of the brownie. I know some desserts are just better by themselves. But I would love to make these brownies just by themselves as well. Thanks!

Teri September 18, 2016

What? How would ice cream ruin the frosting? Just eat it! lol

liz A. October 14, 2015

microwaves - boooo

Cem S. March 18, 2016

You can use a double boiler instead.

Ila September 28, 2015

Is it confectioner's sugar or granulated?

Posie (. September 28, 2015

The sugar in the brownies is granulated, and the sugar used in the frosting is confectioner's. Enjoy!

Amy September 27, 2015

Consistency was far from brownie...more like semi-set cookie dough, but not cakey at all. Nor is this a fudgy recipe. Very milk-chocolate like. To me, fudgy means decadent and deep chocolate flavor. It was more the consistency of fudge rather than fudgy flavor. Icing was strange. Will stick with buttercream next time. Agreed with another user that it was very "grainy".

Lucy G. September 26, 2015

I live in the UK and we don't use cups as measurements. Do you know what ounces or grams I should use? Thanks!

Lucy S. September 27, 2015

I am a Canadian who lives in the UK every winter. Go ahead and use an average-sized tea mug as a measure. It should hold about 8 ounces, which is what a North American cup measure is.

Lucy G. September 27, 2015

Thank you so much!

Ruth S. September 25, 2015

What the time could be if I try with a glass pan?

Posie (. September 28, 2015

The time should be the same! I've made the recipe in both a glass and metal pan with good results.

Dhwani September 25, 2015

Can we replace the eggs with something else ? I am a vegetarian, but want to try the recipe out.

Posie (. September 28, 2015

Hm, I haven't tried this myself but I imagine you could try a flax egg replacement (1 tablespoon flaxseed meal + 2.5 tablespoons water equals one egg). I'm not sure how it will work in this recipe though -- let me know if you try it!

Lindsay September 23, 2015

I made this recipe today and the brownies and frosting turned out great. I stuck the frosting into the fridge like recommended to get the consistency I wanted and that helped it become thick. The top of the brownies came out crispy while the middle was very fudgy!

Eileen B. September 20, 2015

A dusting of icing sugar makes a nice finish, too.

dinah September 18, 2015

Made this tonight. Came out great! I baked it in a 8x8. Took about 50 mins. Loaded it with chocolate chips. Sprinkled with maldon salt.

Laura September 18, 2015

I tried making these and they came out so sugary. I could see the sugar grain on the top of the brownie....did have a fudge consistency at all!?

Posie (. September 18, 2015

Oh no, I'm sorry to hear that! They are certainly sweet, but shouldn't be overly sugary (no more so than other brownies). The only thing I can think of: Are you sure you used unsweetened baking chocolate? Or was it the frosting that was too sugary?

Laura September 18, 2015

That may be the problem! I used semi-sweet, it was all I had!

Laura September 18, 2015

Thanks!

Posie (. September 18, 2015

Sure! Glad we figured it out :) That would definitely be the culprit for sure!

Laura September 18, 2015

Didn't realize it could have the much of an impact!

Chocolate Buttermilk-Frosted Brownies Recipe on Food52 (2024)

FAQs

Did I put too much butter in my brownies? ›

How can you tell if you've used too much? Too much butter in your baked goods would give them different texture (flat, greasy..).

How to pimp brownies? ›

Add a teaspoon of instant coffee or espresso powder. Throw in a handful of nuts—pecans, walnuts, macadamia, whatever you have on hand. Scoop in a palmful of dried or frozen fruit. Add an extra splash of the top-shelf vanilla extract, or a dab of vanilla paste, or a dash of vanilla powder, to the batter.

Can you freeze Mary Berry chocolate brownies? ›

Leave to cool in the tin, then slice into 24 squares. Mary's Tips: Can be made up to 2 days ahead. Freezes well cooked.

What does butter do when baking brownies? ›

Texture and Function

In brownies, both butter and oil will offer a moist, tender texture, but only butter will give the dish the aeration needed for rising brownies well. If you use a cake brownie, butter is a better option because it helps rise the batter. For denser, fudge type brownies, oil is permissable.

What makes brownies fudgy vs cakey? ›

Fudgy brownies have a higher fat-to-flour ratio than cakey ones. So add more fat—in this case, butter and chocolate. A cakey batch has more flour and relies on baking powder for leavening. The amount of sugar and eggs does not change whether you're going fudgy or cakey.

What happens when you use butter instead of oil in brownies? ›

the butter brownies actually had a fudgier texture. they were softer, and they really just melted in your mouth. they also had that shiny crust and just better flavor, whereas the oil brownies were actually chewier.

What does adding an extra egg to brownie mix do? ›

If you want to get a little more creative with your brownie mix hacks, add an extra egg to the batter. The extra protein will help thicken up the batter and make it fluffier, creating a more decadent, fudgy texture. You can also add the yolk by itself in addition to the 2 eggs a box brownie mix typically calls for.

What can you add to boxed brownie mix to make it better? ›

Here's what you need to make box brownies taste homemade: Butter – Boxed brownie mix typically calls for vegetable oil. Using butter is the secret to brownies that taste like they're baked from scratch (use unsalted butter to control the salt level). Espresso powder – Intensifies the chocolate flavor.

What is the best dish to bake brownies in? ›

Metal pans, specifically aluminum, absorb and transfer heat more consistently than glass, making them perfect for delicious, evenly-cooked, moist brownies every time. Metal pans are also excellent for other baked goods, like quick breads, cakes, cookies, and biscuits.

What does bread flour do to brownies? ›

*All purpose flour can be used instead of bread flour, but for the chewiest brownie, bread flour is a must! The higher protein bread flour allows for a chewy texture in baked goods. Go enjoy your brownies!

How do you store frosted brownies? ›

Brownies can be kept at room temperature for up to five days for most brownie types. A cheesecake swirl or frosting or a ganache frosting should not be kept at room temperature. Store brownies in the fridge if they contain add-ins that are normally refrigerated.

Can I bake brownies at 350 instead of 325? ›

Most recipes call for baking brownies at 350°. If a fudgy inside and crackly top is your goal, stick with that temperature. Brownies baked at 325° will take longer to bake and will become chewier in texture.

Is it better to bake brownies with butter or parchment paper? ›

If you're reading this, you've probably baked a dozen — or 900 — batches of brownies. But before you roll up your sleeves to commence on your next round of fudgy treats, here's a genius tip: Line your pan with parchment paper.

Is it better to bake brownies with olive oil or butter? ›

Home bakers, too, increasingly are foregoing the butter and baking cakes, tortes, brownies and more with olive oil. Swapping olive oil for butter cuts saturated fat. Plus, good olive oil adds a wonderful, nuanced flavor to baked goods and keeps them moist.

What happens if you add too much butter? ›

But one unexpected error bakers can make is adding too much of a good thing, butter. Although butter generally makes it all better, bakers who go overboard with it are dooming their cookies to a greasy and crumbly texture.

Why are my brownies still runny in the middle? ›

If the brownies still look wet or aren't pulling away, they aren't done. Even fudgy brownies will pull from the edges once they've finished baking. You'll see that the edges look dry while the middle still looks soft or slightly wet. Chewy and cakey brownies will have dry edges with firmer-looking centers.

Why are my brownies leaking butter? ›

So the fat seeping out is actually cocoa butter rather than regular butter. The remaining cocoa solids then start to cling together which will then give a harder texture to the brownies. Melt the chocolate and butter together over a very low heat, stirring regularly.

Why don't my brownies have a crackly top? ›

Add semisweet chocolate chips

We made several varieties of brownies in my shop and I noticed that the batches that had extra chocolate chips added to the batter always came out shiny! That's when I realized that the extra step of adding chocolate chips to the brownie batter helps the brownies get a crackly top.

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