Guinness Chocolate Brownies

These Guinness Chocolate Brownies are the moistest brownies ever! They’re an awesome combination of cakey and fudgy with a boozy kick. You won’t be able to stop eating them!

Looking for more brownie recipes? Try my Just Like Box Mix Brownies, or the World’s Fudgiest Homemade Brownies!

Three Guinness Brownies on a napkin

Overhead view of several Guinness Brownies on a napkin

Guinness Chocolate Brownies

I have spent the better part of the last couple weeks of my life on these brownies, no joke. I wanted the most perfect version of a guiness brownie to share with you.

But before I dive into all that, I have a confession. Get ready.

I don’t like beer.

I know, I know. How can I post a recipe with beer in it when I don’t like beer. I can’t explain it except to say that it’s my dad’s fault. I clearly got my taste buds from him – he also does not like beer. It’s a thing and he passed it on to me. I have tried so many times to like it. It just won’t work.

So I fully expected to not like these brownies. I have a coworker who loves Guiness like I love cake, so I knew he’d help out with the taste testing.

Guinness Brownies stacked on a napkin

Guinness Brownies stacked on a napkin

Crazy thing is, I’m super in love with these brownies. I can taste the Guinness, but it mostly just enhances the flavor of the chocolate in the best way possible. Seriously amazing. And they seem to get moister the second or third day.

So back to the whole testing these thing. I started with these Quick and Easy Brownies. They are the jam, and pretty much everyone that tries them loves them. So I started with those.

But oh my, the bubbles in Guinness! The first version was basically like chocolate cake. No good.

I proceeded to make like 6 or 7 more versions – I lost count. Messing around with the amount of Guinness, eggs and some other ingredients to get the perfect amount of fudgy and cakey. I am totally in love with the final texture of them.

Guinness Brownies on a napkin

Overhead view of Guinness Brownies stacked on a napkin

I also wanted them to have plenty of Guinness flavor. Truth is, I was never totally able to please my Guinness loving coworker. I added almost an entire beer and he still didn’t think it tasted that much like Guinness. He and his family (and everyone else) loved the brownies, but I decided I’d have to drown a brownie in Guinness before he’d think it tasted enough like it. Craziness.

I still think they taste like Guinness, but maybe I’m just sensitive to beer taste. I guess you’ll just have to make them and decide for yourself. 🙂 They’re totally worth it.

Guiness Brownies stacked on a napkin

You might also like these Guinness desserts:

Guinness Chocolate Cheesecake
Guinness Chocolate Cupcakes
Guinness Chocolate Mousse Cake
Guinness Chocolate Poke Cake
Guinness Floats

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Guinness Chocolate Brownies on a napkin

Guinness Chocolate Brownies

  • Author: Lindsay
  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Total Time: 50 minutes
  • Yield: 12-15 Brownies
  • Category: Dessert
  • Method: Oven
  • Cuisine: American


These Guinness Chocolate Brownies are the moistest brownies ever, and they’re an awesome combination of cakey and fudgy. You won’t be able to stop eating them!



  • 1/4 cup vegetable oil
  • 3/4 cup Guinness Stout beer
  • 2 cups sugar
  • 1/2 tsp vanilla extract
  • 1/4 cup salted butter, melted and cooled
  • 2 eggs
  • 1 cup flour
  • 2/3 cup cocoa (I used Hershey’s dark cocoa)


  • 5 oz semi sweet chocolate chips
  • 2 tbsp salted butter
  • 2 tbsp guiness
  • 1/4 cup powdered sugar


1. Preheat oven to 350 degrees. Grease a 9×9 square baking pan and line it with parchment paper.
2. Mix together the oil, guinness, sugar and vanilla extract in a large bowl.
3. Add butter and mix until well combined.
4. Add eggs and mix until well combined.
5. Combine flour and cocoa in another medium sized bowl.
6. Slowly add dry ingredients to the egg mixture until well combined.
7. Pour the batter into the pan and spread evenly.
8. Bake for 35-38 minutes, or until a toothpick comes out with a few crumbs. Allow brownies to cool.
9. To make ganache, place chocolate chips, butter and guinness into a microwave safe bowl and microwave until guinness gets hot and butter starts to melt.
10. Whisk together chocolate mixture until smooth, microwaving for a little longer, if needed, using 30 second increments.
11. Add powdered sugar and whisk until smooth.
12. Pour ganache over brownies and spread into an even layer.
13. Cut into bars.


  • Serving Size: 1 Brownie
  • Calories: 387
  • Sugar: 45.7 g
  • Sodium: 73.7 mg
  • Fat: 18.7 g
  • Carbohydrates: 53.7 g
  • Protein: 4.5 g
  • Cholesterol: 43 mg

Keywords: easy brownies recipe, homemade brownies recipe brownies recipe from scratch, moist brownies recipe, boozy brownies

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  1. Wesley

    Omg omg omg. These were AMAZING. I don’t even like beer lol. My husband loves Guinness, so I’m always trying recipes for him. I’m going to keep this one forever. After reading reviews I was a little worried about them being soupy, so I added half a cup more flour. They were rich and delicious

  2. Brian Stinson

    These turned out to be very delicious this past Saturday, with a scoop of mint chocolate chip ice cream. Served as dessert to oven-roasted Corned Beef, Potatoes, Carrots, and Cabbage. Like, your co-worker, we couldn’t really taste the Guinness, as we were washing everything down with Guinness anyway….who cared?? Thank you for sharing your recipe, Lindsay!

  3. Susan Gall

    Never have I ever had such an epic baking fail. After following the instructions to the letter and baking for 39 minutes they were crisp on the outside and raw in the middle. They collapsed when they were cooling. Fortunately just baking for us, not for guests. Won’t try this again.

    1. Lindsay

      I’m very sorry to hear you had trouble with it. There are a couple possibilities as to what went wrong. One could be that an ingredient wasn’t measured properly and you ended up with a thinner batter that would take longer to bake. Depending on what was mismeasured, the proportions may have been off and that could also cause it to sink. Also was your Guinness fresh and still very carbonated? There is no leavening in these brownies because it all comes from the carbonation in the beer. If your beer was flat or near flat, that could cause the brownies to fall as well. Also, if they were under baked when they came out of the oven, the center would collapse. My suggested time for baking is based on my oven, but ovens vary. One minute above the suggested baking range may not be enough if your oven bakes differently. I probably would’ve baked them longer. Until a toothpick came out with a few crumbs and not wet.

  4. Ky

    kind of had high hopes for these brownies. I find they don’t taste like much. everything else is right, there is just no flavor.

  5. Jane

    We made these using a home brew Chocolate Mint Stout made by a friend. It was a great use for a beer that was so unique. Brownies were moist and tasted really good. I did reduce the sugar by a 1/2 cup but I do that quite often in recipes. Will be making this again using Guinness beer. Thanks for sharing the recipe.

  6. Erin Shirley

    Hi – I’m going to def. make these for out of town guests and St Pat’s Party we’ll have this weekend. My question is this: once you’ve made them, what is the best way to store them? I have to make them on Thursday to serve not until Saturday, so need to ensure I store them the best way – thanks so much – they look delish!!!

    1. Lindsay

      With the ganache on top, you could refrigerate them and then bring them back to room temperature to serve. Enjoy!

  7. Lisa

    Only used half of the sugar(so just 1 cup) and it was plenty. Also made a chocolate Irish Cream frosting for them instead of the ganache. Everyone loved them, so good!

  8. Kathleen Tatarek-VanPeursem

    This recipe did not work for me at all. I followed the directions to a T and it just would not cook. I baked it over 65 minutes and still goopy. A sad waste of my time and money.

About Lindsay

I'm a wife and a mom to twin boys and a baby girl! And I've got a serious sweets addiction! Bring on the treats!

Scripture I’m Loving

“Come to me, all you who are weary and burdened, and I will give you rest. Take my yoke upon you and learn from me, for I am gentle and humble in heart, and you will find rest for your souls.” Matthew 11:28-29