Chocolate Mint Brownies A St Patrick’s Day Treat

Chocolate Mint Brownies
I have always adored chocolate mint anything and these Chocolate Mint Brownies are no exception. Oh my, these Chocolate Mint Brownies really are irresistible, even for me, the queen of one bite taste trials and generous giver away of baked goods (so they aren’t hanging around tempting me!).

Click here to pin this recipe.

Although they are easily available in North America and elsewhere, it can be challenging to find chocolate mint chips in the UK. In the end I sourced Guittard Mint Baking Chips at Ocado, at a cost of over £6 for a package – that’s around US $9. If I tell you that these Chocolate Mint Brownies are worth it, you may get an idea of just how incredibly delicious they are.

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Chocolate Mint Brownies
Anyway, the whole reason for developing my own Chocolate Mint Brownies recipe was as a St Patrick’s Day treat and tribute to my late paternal Grandmother, Mary Addis, the reason I am a quarter Irish.

Scroll to the bottom for the recipe, or read on if you’d like to find out more about this remarkable lady.

Mary Elizabeth Addis
Mary was born in Belfast, Ireland but left home when she was barely 18 to travel to Canada. She undertook the risky sea voyage with several other young women her age, under the protection of her future employer, a manager of Dickson Textile Mill, one of the busy turn of the 19th century business in southern Ontario. Mary left wearing this locket containing photographs of her mother and father, never expecting to see them again. I can’t imagine being that brave.

Grandma's Locket
My Grandpa said Mary, or May as he called her, “roller skated right into him” one afternoon and that it was very much love at first site. I always loved that story. Mary and Joe, my grandpa, were married after the First World War.

Grandma & Grandpa Killingback
Sadly I never got to meet this wonderful lady as she died aged only 61, just about a year before I was born. I think of her often though, particularly when I’m nervous about trying something new. If my Grandma could do what she did all those years ago, there really is very little excuse for me not to be brave!

Blarney Castle
I’ve haven’t been to Belfast yet, but I have visited the southern part of Ireland many times. I’ve even kissed the Blarney Stone at Blarney Castle (above).

April J Harris kissing the Blarney Stone

Kissing the Blarney Stone

And yes, doing this does appear to have given me the gift of the gab as the legend promises as I have now gone almost completely off topic. Back to my Chocolate Mint Brownies!

Chocolate Mint Brownies

These delectable treats really are amazing. I used Bournville cocoa powder from Cadbury – one of my favourite cocoa powders due to its rich dark chocolate flavour. I also like Green and Black’s cocoa powder. You can, of course, use any cocoa powder that you like. However please don’t use anything labelled ‘drinking chocolate’.

My Chocolate Mint Brownies really are the work of moments. Then all you have to do is wait – enduring the incredible smell of them baking wafting through the house – about 35 minutes until they are cooked. Be sure not to overcook the brownies as it’s their moist texture that helps make them so irresistible. The hardest thing is waiting for them to cool so you can glaze and slice them. Of course, the glaze is purely optional but it really does make them extra special – especially if you are serving them for St Patrick’s Day. However I have to be honest, my family love these brownies so much I’ll be making them year round from now on!

Printable Recipe

5.0 from 2 reviews
Chocolate Mint Brownies
Prep time
Cook time
Total time
Serves: 12 large brownies
  • ¾ cup cocoa powder (Bournville if possible)
  • ½ teaspoon baking soda
  • ⅔ cup melted unsalted butter, divided
  • ½ cup boiling water
  • 2 cups caster or granulated sugar
  • 2 eggs, beaten
  • 1⅓ cups all purpose flour
  • ¼ teaspoon salt
  • 1 teaspoon vanilla extract
  • 1⅓ cups mint baking chips
  • Glaze -
  • ⅔ cup icing sugar (confectioner's sugar)
  • 1 to 3 teaspoons water
  • ¼ teaspoon mint flavouring
  • a drop of green food colouring
  1. Preheat the oven to 350°F (175°C or 165°C for a fan oven).
  2. Grease a 13 x 9 x 2 inch (33 x 22 x 5 cm) pan.
  3. Sift the cocoa and baking soda into a large bowl.
  4. Stir in ⅓ cup of the butter.
  5. Add the boiling water and stir until the mixture thickens up.
  6. Stir in the sugar, beaten eggs, vanilla and the remaining ⅓ cup butter.
  7. Stir well until the mixture is smooth.
  8. Sift in the flour and salt.
  9. Stir until well blended.
  10. Stir in the mint chips.
  11. Spread the batter in the prepared pan.
  12. Bake 35 to 40 minutes or until the brownies begin to pull away from the sides of the pan.
  13. Place the pan on a wire rack to cool.
  14. Meanwhile, put the icing sugar in a bowl and gradually add the water until you have a smooth, drizzle-able glaze.
  15. Stir in the mint flavouring and a drop of green food colouring.
  16. Mix well.
  17. When the brownies are completely cool, drizzle with the glaze.
  18. Let the glaze set for at least a half hour before cutting the brownies into squares.

More Delicious Recipes

Chocolate Orange Brownies

Raspberry Bakewell Tart Squares 

Chocolate Banana Snack Cake

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Article by April Harris

April has written 1291 great articles for us.
April is a writer, recipe developer, frequent traveller and blogger sharing travel, food, and style. Based in the south of England, April is a British Canadian who is passionate about family, hearth and home, healthy living (with treats!) and the transformative power of travel.
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  1. I am such a fan of mint and chocolate. Your brownies caught my attention right away! What a nice way to remember your grandmother, a recipe made in her honor. Saying hello from Foodie FriDIY 🙂 Have a great weekend!

  2. This sound so decadent – love them! I absolutely love the story of your grandmother (and grandfather), and what an inspiration!

  3. What a beautiful tribute to your grandmother. I agree that chocolate and mint are a perfect pairing. These brownies are just stunning!

  4. Dear April, I often think of my mom and grandmother when I need strength too. These brownies sound wonderful…and have a beautiful story behind them. Wishing you a wonderful St. Patrick’s Day. xo dear, Catherine

  5. What a wonderful story April! <3

  6. G’day Gorgeous April! Love the recipe and presentation and thx for sharing at the Say Gday Party pinned Can link up to 3

  7. Believe or not but like you, I’ve been wanting to make such brownies for a looooooooooong time. and just like you – I find it difficult to get the right products here.
    I’m jealous now – as you finally made it and they look DELICIOUS !!

    • Thank you, Winnie 🙂 Some of the products seem to be becoming more easily available over the years – I’m hoping it will continue – and that they will come down in price!

  8. What a great tribute to your grandma!! Yummy brownies!

  9. What a combo, April, chocolate brownies and mint! This looks divine!! And your granny was such a strong lady, her bravery is inspirational!

  10. Delicious chocolate mint brownies April, I wish I could at least taste one.

  11. Oh my gosh, April. I loved reading this story. It is so wonderful that your family has passed on Mary’s story, her locket, the photos…everything. It is also touching that you look to your grandmother (who you never met) as a source of inspiration and courage.

    Now about these brownies…brownies are my favorite treat! I’ve never made them with mint but now I know I have to. Lucky for me, mint chips will not be $9 a package. Wow!

  12. Such a great family story to go with our brownies April! I’m ready to sit down with a batch right now! Thanks for the link up at #PureBlogLove Link Party! It’s so fun to read your posts!

  13. What a beautiful, tasty tribute to your grandmother. I am quite sure that these brownies are worth every bit that you spent on the mint-chocolate chips!

  14. Yummy! I too love chocolate and mint together! I loved reading the story about your grandmother! These brownies look delish! I’ll have to try them soon!

  15. These would make the perfect dessert for St. Patrick’s Day!

  16. Those brownies look amazing, April! And what a wonderful heritage to have. 🙂

  17. Nice story. People were very brave back then. I can’t imagine leaving my family at 18, knowing that I’d probably see them again. Fate is fickle. We never know.
    I do know that these brownies look delicious. Love the mint topping.
    Happy St. Pat’s!

    • Thank you, Dan. It really was brave. She only went back once too – and that was for her Dad’s funeral. Thank you so much for the compliment about the brownies. Happy St Patrick’s Day to you and yours!

  18. Hi April ,
    These look really yummy ! I’ll have to make some to take to my co-workers ( to ensure I don’t eat them all 😉 ) . It looks like you have the locket that your grandma had , what a lovely thing to have . She was very brave to leave her home and come to a strange country ! But don’t forget you did the same thing which took a lot of courage ! Even if times are different and families can travel to see each other much easier now it still takes a lot of gumption ( one of my favorite words ) to do what you did .
    Love Ruby .

    • Thank you so much, Ruby 🙂 Your compliment made my day – and I love that word, ‘gumption’ too. It’s especially nice when someone uses it in reference to me 🙂 x

  19. What a lovely way to remember your grandmother. The brownies look delicious!

  20. Your grandmother truly was brave! And what an inspiration, indeed. Love the meeting with your grandpa…Love your mint brownies, too. I’m green with envy that Cadbury cocoa powder is so readily available to you ; ) P.s. Pinning!

  21. My favorite combination: mint and chocolate! I’ll definitely be making these. Now I’m going to go check out your orange and chocolate brownies, because you know, orange and chocolate…

  22. What a lovely story! So brave to leave her family and travel to a new country!
    The brownies look delicious. I am pinning to try in the very near future.

  23. Hilary S says:

    I tend to go for mint choc anything too! Maybe you could bring some Guittard chocolate chips back in your suitcase! ?


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