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Guinness Brownies

Guinness Brownies – Soft, chewy and loaded with Guinness flavor, these brownies are guaranteed to be the best you’ve ever had! They’re quick and easy to make.

Guinness Brownies

If you are planning a St. Patrick’s Day party, these Guinness Brownies are a must try recipe!

I know, I am in my Guinness mood, this is the second recipe in a row using stout.

By all means, I really don’t like drinking it, I am a Lager kind of girl.

On the other hand, if we are talking adding Guinness to a sauce (hope you did not miss my amazingly delicious Beef and Guinness Pie recipe) or even to a cake, that’s a different story.

I absolutely love the malted flavor it brings to the food.

Guinness brownies with chocolate sauce

This morning, I was all set to bake these moist, fudge-stoutly Guinness Brownies. I know you will be a little bit sceptic adding beer to your brownies, but I promise there will be no strange taste in the end.

These are probably the best Guinness Brownies ever!

I was way too sleepy and did not realize that my house will smell like a brewery before 9am 🙂 Don’t start these brownies first thing in the morning!

Oh,…. and stay next to the saucepan when you’re boiling the beer, of course will get foamy and bubbly and next thing, you’ll have to wash your stove top!

Guinness Brownies


How to make this recipe

The recipe is pretty easy, a classic brownie recipe , where you add some Guinness Beer to the batter and to the glaze.

I really like my brownies to be chocolaty and you have probably noticed the flavor changes over days and the chocolate flavor seems to melting into thin air.

There is a secret ingredient I am adding to the batter to enhance the chocolate flavor and keep it for longer: 1 teaspoon of instant coffee!

Yes, just by adding a little bit of instant coffee, you’ll take your brownie to the next level. You have to try this!

Guinness Brownies

According to an article I read recently, the world splits into 2 groups when it comes to brownies: one group that loves crumbly and cakey brownies and the second one which prefers them dense and fudgey.

What group are you in? I am definitely for dense and fudgey!

Hope you’ll enjoy it!

Guinness Brownies


guinness brownies made from scratch


Yield: 12 brownies

Best Guinness Brownies

best chewy guinness brownies

Guinness Brownies - Soft, chewy and loaded with Guinness flavor, these brownies are guaranteed to be the best you’ve ever had! They’re quick and easy to make!

Prep Time 10 minutes
Cook Time 50 minutes
Resting Time 20 minutes
Total Time 1 hour 20 minutes


Brownie Batter

  • 1¼ cup stout, I used Guinness
  • 1 bag 11.5oz/ 326g milk chocolate morsels, I used Nestle
  • 1&1/3 sticks (11 tablespoons) unsalted butter
  • 1 cup sugar
  • 3 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • a pinch of salt


  • 1 cup milk chocolate morsels, used Nestle
  • 2 tablespoons unsalted butter
  • ¼ cup stout, will be reserved from the initial batter quantity


  1. Place stout in a small saucepan and bring it to a boil, whisking to get rid of the foam and reduce the heat as it gets to the boiling point; cook it for 10 minutes and then remove from heat. Allow to cool. Reserve ¼ cup stout for using it later in the glaze.
  2. Preheat your oven to 350F/ 180C. Line a square/ rectangular/ circle (9 inch/ 23 cm max)metal baking pan with baking paper. 
  3. In a medium bowl set over a sauce pan with simmering water, stir the chocolate morsels and butter until you get a smooth mixture.
  4. In a separate large bowl, whack together sugar, eggs and vanilla extract. Gradually add the chocolate mixture and 1/2 cup stout. Whisk in the flour and salt too. Pour the batter into prepared baking pan.
  5. Bake brownies until surface begins to crack and a tester inserted into center comes out with a few moist crumbs attached for almost 40 minutes. Once the brownies are out of the oven, remove them from the pan and allow to cool for at least 20 minutes.
  6. Meanwhile, prepare the glaze by stirring 1 cup chocolate morsels in a medium bowl set over a sauce pan of simmering water until melted and smooth. Add reserved reduced ¼ cup stout and butter; whisk until well combined.
  7. Pour the warm glaze over brownies. Let stand at room temperature until glaze is set, minimum 40 minutes.Cut into squares using a long knife, cleaning it with warm water and drying it with a paper towel before cutting the next square.


1 US cup = 200ml

1 butter stick = 4oz/113g

This recipe was adapted from Bon Appetit Magazine, February 2012.

Nutrition Information:



Serving Size:


Amount Per Serving: Calories: 413Total Fat: 18gSaturated Fat: 11gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 69mgSodium: 87mgCarbohydrates: 51gFiber: 2gSugar: 38gProtein: 6g

Guinness Brownies

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fudgy guinness brownies with chocolate ganache on top


Leanne | Crumb Top Baking

Sunday 17th of March 2019

We are most definitely celebrating today and these decadent brownies would be the perfect addition to our feast! Love baking with Guinness! It adds such a great flavour, especially to chocolate!


Friday 15th of March 2019

These brownies come with the best ingredients: chocolate and stout. And a perfect way to celebrate St. Patty's day!

Gwyneth Baker

Sunday 15th of March 2015

Hi. Would it be possible to post this recipe in lbs and ounces please. Looks fabulous!

Nancy |Plus Ate Six

Wednesday 11th of March 2015

It's hubbies birthday on Sunday. Last year I made him a Guinness & chocolate cake so it's probably only fair that I make him Guinness brownies this year :)

Adore Foods

Saturday 14th of March 2015

Happy birthday to your hubby! Let me know what he thought of them :) Have fun!


Tuesday 10th of March 2015

I'm definitely in the dense and fudgey category too! :-) It's so lovely to meet you, Oana. :-) I look forward to reading your gorgeous blog regularly in the days to come.

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