Halloween Cookie Bars!

Spooky and Terrifyingly Tasty Halloween Cookie Bars with M&Ms!

It’s October, it’s nearly Halloween… and I have been a bit poor on the Halloween scale so far this year. I’ve been so busy I have barely had the time, but I thought I would do something quick, easy and deliciously spooky for you guys to bake for the kids, or just because you’re craving cookies!

This recipe is basically a copy of my M&M Cookie Bars because I just adore M&Ms, and they bake so well for cookies. Personally, I find that Smarties lose their colour quite a bit… and in general, I prefer M&Ms anyway. Are you the same?! Smarties or M&Ms? I feel like there is quite a divide on the internet about this!

I went to London to see Harry Potter and the Cursed Child recently, and if you go to Soho/Leicester Square quite often you’ll know that M&M world is there… and I couldn’t resist it. I bought all the themed chocolate sweets I could afford. That’s a bit of a lie, I just didn’t want to spend toooooo much as it would be a bit ridiculous.

When you go downstairs in M&M world, you basically find a GIANT pic’n’mix of M&Ms and it just looks amazing as well. All the colours perfectly separated, or themed ones dotted about… and I bought some Halloween ones just for these. They were mainly orange, a few yellow, and then some black/brown ones.

In the past when I have made themed M&Ms, I just buy many packets and pick out all the colours I need. This way, I don’t have many random leftover colours that I need to use up in a random way! However, just using themed or coloured sweets wasn’t enough for me… as it’s just a bit basic. I wanted more ‘Halloween’ in these bad boys.

I thought, why not make the actual Cookie black? Like to really contrast with the Orange and Yellow. I realise some people can get a bit funny about using food colouring, but when you use really good quality food colouring, it doesn’t matter even nearly as much because you use so little. I 100% recommend the Sugarflair Extra Black, as I just used half a teaspoon, and it made the bake completely black.

I haven’t personally ever coloured fondant black, as I usually just buy it, but for buttercreams, macarons etc, this Sugarflair Extra Black, is ideal. It really is insane. You can see from the pictures just how well it worked, and I am obsessed. The actual cookie bars don’t taste any different, they just taste deeeelightful and I am obsessed with cookie bars as you may know.

I personally bake these for 17/18 minutes because I like them to be quite gooey. The longer you bake, the dryer they will be. I’ve had people ask questions in the past about why their cookie bars are dry, and it literally is just overbaked. If you use a different tin size, it can affect the bake, but keep an eye! These don’t really matter so much if they’re ‘underdone’ because they continue to bake when cooling! Enjoy!

Halloween Cookie Bars!
Prep Time
10 mins
Cook Time
18 mins
Total Time
28 mins
 

Spooky and Terrifyingly Tasty Halloween Cookie Bars with M&Ms!

Course: Cookies
Cuisine: Cookie Bars
Keyword: Halloween
Servings: 16 Cookies
Calories: 156 kcal
Author: Jane's Patisserie
Ingredients
  • 115 g Unsalted Butter
  • 55 g Granulated Sugar
  • 135 g Light Brown Sugar
  • 1/2 tsp Sugarflair Extra Black Food Colouring
  • 200 g Plain Flour
  • 50 g Cocoa Powder
  • 1 tsp Bicarbonate of Soda
  • 1/2 tsp Salt
  • 1 tbsp Cornflour
  • 1 Medium Egg
  • 1 tsp Vanilla Extract
  • 300 g Halloween M&Ms
Instructions
  1. Preheat your oven to 190C/170C Fan and line a 9x9inch Square Tin with parchment paper, and leave to the side for now.

  2. In a large bowl, melt the butter. 

  3. Add in the two sugars, and whisk for about 2 minutes so the sugar starts to dissolve and the mixture is smooth. 

  4. Add in the black food colouring and whisk again. 

  5. Add in the Egg and the Vanilla, and whisk again briefly till smooth.

  6. Whisk/Mix together the Plain Flour, Cocoa Powder, Bicarbonate, Salt and Cornflour together so it's evenly distributed.

  7. Add in the Dry Ingredients, the M&Ms (leave back a handful), and mix with a spatula till a thick cookie dough is formed.

  8. Press the mixture into the bottom of the tin and press in the handful of 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.

  9. 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!

Recipe Notes

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, which I bought from M&M World in London - which is how they are so easily colour specific! 

You can buy themed M&Ms online, or pick colours out of packets, or try other Halloween chocolates like orange smarties (but M&Ms hold their colour better)

These delicious beings will last in an airtight container for up to 5 days, but honestly, they’ll be eaten before then.

If you want to bake these into cookies you can, but add in 50g more plain flour. They may still spread a smidge. 

Nutrition Facts
Halloween Cookie Bars!
Amount Per Serving
Calories 156 Calories from Fat 54
% Daily Value*
Total Fat 6g 9%
Saturated Fat 4g 20%
Cholesterol 25mg 8%
Sodium 159mg 7%
Potassium 76mg 2%
Total Carbohydrates 23g 8%
Dietary Fiber 1g 4%
Sugars 11g
Protein 2g 4%
Vitamin A 3.9%
Calcium 1.6%
Iron 6.2%
* Percent Daily Values are based on a 2000 calorie diet.

ENJOY!

Find my other Recipes on my Recipes Page!

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J x

© Jane’s Patisserie. All images & content are copyright protected. Do not use my images without prior permission. If you want to republish this recipe, please re-write the recipe in your own words and credit me, or link back to this post for the recipe.

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