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Super Chocolatey Cookie Dough full of M&M’s, making THE Most Delicious M&M Cookie Bars Ever!
I have been after a Cookie Traybake recipe for SO LONG. I have struggled so many times as a majority of the recipes are american, and therefore in ‘Cup’ measurements, and no offence to anyone… but I hate Cup measurements. I just find them so unreliable and it just doesn’t make sense too me.
After a good few hours of Pinterest searching for the next few months of baking inspiration, I saw some amazing cookie recipes. As I have a good few cookie recipes however, I tried Cookie Bars. Something about these M&M Cookie Bars was just perfect.
I did have to spend plenty of time however googling each weight of ‘cup’ measurement to find out what it was in grams, and when it didn’t entirely make sense I took a random stab at scaling up or down so make it a whole amount, and oh my days THESE ARE SO GOOD.
Like, I have tried recipes before and they have utterly failed. I have had to bake some cookie bars in the oven for near enough an hour and a half, and they’ve been disgusting. These ones however, oh my, these ones. They took the correct amount of time to bake, with the random guessings of some ingredients, and they are SO YUMMY.
I think I actually ended up annoying my parents by babbling on all day about how happy I was that these turned out so well. Seriously, every half hour I would say “I’m so proud about how amazing these are” and by the end of the day, my parents were finishing the sentence for me.
But seriously, I didn’t know whether the colour of the M&M’s would run or not, but they didn’t. They stayed so bright and colourful, making sure these look perfect. The dark chocolatey style cookie base marries so well with the M&M’s. If you eat the cookie bars when they’re still slightly warm, the M&Ms are gooey, crunchy and amazing.
I changed a few ingredients slightly as I said because I wanted it to suit my style of baking. However, I have never imagined using Cornflour in the cookies, and I honestly think it contributes to how well these baked.
I lowered the baking temperature slightly as the first time I made these they were maybe a tad overdone at 20 minutes, and with the temperature 10 degrees lower, they were perfect. I LOVE these bars, and I’m sure you will do too – enjoy!
M&M Cookie Bars!
- 200 g Plain Flour
- 50 g Cocoa Powder
- 1 tsp Bicarbonate of Soda
- 1/2 tsp Salt
- 1 tbsp Cornflour
- 115 g Unsalted Butter/Stork
- 55 g Granulated Sugar
- 135 g Light Brown Sugar
- 1 Medium Egg
- 1/2 tsp Vanilla Extract
- 300 g M&Ms
- Preheat your oven to 190C/170C Fan and line a 9x9inch square tin with parchment paper, and leave to the side for now.
- Whisk/mix the plain flour, cocoa powder, bicarbonate, salt and cornflour together so its evenly distributed – leave to the side.
- In a larger bowl, melt the butter. Add in the two sugars, and whisk for about 2 minutes so the sugar starts to dissolve and the mixture is smooth.
- Add in the egg and vanilla extract, and whisk again briefly till smooth.
- Add in the dry Ingredients, and all but a small handful of M&Ms, and mix with a spatula till a thick cookie dough is formed.
- Press the mixture into the bottom of the tin and press in the handful of M&Ms into the top for decoration.
- Bake the traybake in the oven for 18-20 minutes, until the top of the cookie bake looks ‘dry’ and a skewer comes out basically clean, bar a few crumbs.
- Leave the cookie bake to cool for about 10 minutes, then leave to cool fully on a wire rack. Cut the bake into 4×4 for decent sizes, or 5×5 for smaller ones! Enjoy!
- This delicious recipe is based on a recipe by Crunchy Creamy Sweet which I have adapted to grams, and swapped up slightly.
- I used oodles of Chocolate M&Ms in this recipe, and the colour on them stayed perfect even after baking, but I’m sure it would work with the Crunchy M&M’s, the Peanut M&M’s, or even smarties for example!
- These delicious beings will last in an airtight container for up to 5 days, but honestly, they’ll be eaten before then.
- You can find a cookie version of this recipe here!
Find my other Cookie & Traybake Recipes on my Recipes Page!
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