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    Home » Halloween Baking Recipes

    Halloween Cornflake Cakes

    Published: Oct 13, 2025 · Modified: Oct 23, 2025 by Chloe · This post may contain affiliate links · Leave a Comment

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    My no-bake Halloween Cornflake cakes are perfect for spooky baking with kids! They're super easy to make with just 6 ingredients and less than 15 minutes of prep time!

    overhead image of halloween cornflake cakes

    There's nothing quite as good as an old-school Cornflake cake, and with spooky season upon us, it felt like the perfect time to give the traditional version a seasonal makeover! My Halloween Cornflake cakes are just like the classic chocolate version, but with some added decorations to help bring them to life.

    They're super simple to make, making them great for Halloween baking with kids or a last-minute treat to take to parties. These are ALWAYS popular with my family and disappear within minutes every year. I can't wait for you to try them out yourself!

    Grab your ingredients

    Here's everything you'll need to make this recipe...

    • Semi-sweet chocolate: Semi-sweet chocolate contains roughly 50-60% cocoa solids. Cheap 'dark' chocolate (like the supermarket own-brand stuff) usually falls into this category, and it's what I use most of the time. Milk chocolate contains less cocoa solids and therefore more sugar, which can cause your mixture to seize or split, so avoid this if you can.
    • Butter: This helps bind everything together with a nice glossy finish. I used unsalted butter for my cakes.
    • Golden syrup: This helps the chocolate and butter blend together smoothly without splitting. If you can't find golden syrup, runny honey works well too.
    • Cornflakes: The star of the show! You could also use chocolate Cornflakes if you want a stronger chocolate flavour.
    • Halloween cake decorations: I used a mix of edible eyes, Halloween cake sprinkles and mini orange chocolate drops. Feel free to use whatever spooky decorations you have on hand.

    Kitchen equipment

    • Saucepan: To melt the chocolate, golden syrup and butter together. This can also be done in a heatproof bowl in the microwave if you prefer.
    • Cupcake tin or baking tray: One that fits 12 paper cupcake cases.
    • Cupcake cases: I used a mix of orange and black Halloween cupcake cases, but plain cases are fine too.
    • Utensils: Just a wooden spoon for mixing and a couple of smaller spoons for dividing the mixture into your cases!
    unwrapped halloween cornflake cakes on a white cake stand

    How to make Halloween Cornflake Cakes step-by-step

    Step 1: Start by lining a cupcake tin with 12 Halloween paper cases. Set it aside, ready for your mixture to go into later.

    Step 2: Break up 200g of semi-sweet chocolate and place it into a saucepan, along with 120g of butter and 4 tablespoons of golden syrup.

    Step 3: Place the pan over low heat on the stove, stirring gently until it's completely melted. If you prefer to do this in the microwave, take it out and gently mix it every 30 seconds or so, to prevent burning or splitting.

    Step 4: Once everything is melted, remove the pan from the heat and pour in 150g of Cornflakes. Mix well until all of the Cornflakes are fully coated in chocolate.

    melted chocolate butter and golden syrup together in a saucepan
    chocolate cornflake mixture in a pan

    Step 5: Divide the mixture equally between your 12 cases then top with edible eyes and Halloween cake sprinkles.

    topping the cakes with halloween sprinkles

    Step 6: Let the cakes sit at room temperature for an hour or two until they're fully set then enjoy!

    Cornflake cake tips

    • Use semi-sweet chocolate with 50-60% solids for the best flavour and texture. Avoid milk chocolate as it will cause your mixture to become grainy or even split completely.
    • Avoid packing the mixture too firmly into the cases. The melted chocolate will naturally hold everything together as it sets, so just spoon it in gently and let it hold its shape on its own.
    • Add the decorations on top while the mixture is still wet. This will prevent them from sliding off when you go to eat them.
    • Place your cakes into an airtight container as soon as they've set, to keep them fresh and crunchy for as long as possible.

    FAQs

    How long do Halloween Cornflake cakes last?

    These will keep well in an airtight container for up to 3 days. I prefer the texture when I store them at room temperature but you can keep them in the fridge if your kitchen is warm.

    Can I freeze these cakes?

    Yes, these are great for freezing if you want to do some party prepping in advance! Just place them in a single layer in an airtight container and freeze them for up to 3 months. To defrost, leave them in the fridge overnight or on a plate at room temperature for an hour or two. Do not refreeze.

    What can I use if I don't have Halloween-themed sprinkles?

    You can use any black, orange, green or purple sweets or sprinkles you have on hand. Mini M&Ms, Smarties and 'chocolate beans' for cake decorating work particularly well.

    halloween cornflake cakes in orange paper cases

    More Cornflake desserts

    • Old school chocolate Cornflake cakes
    • Cornflake rocky road
    • Golden syrup Cornflake cakes
    • White chocolate Cornflake cakes
    • Old school Cornflake tray bake

    I hope you have fun making these Halloween Cornflake cakes! If you make them at home, please leave a rating and comment below to let me know what you think. Enjoy!

    thumbnail image of halloween cornflake cakes

    Halloween Cornflake Cakes

    The easiest no-bake Halloween treats, made with classic Cornflakes, edible eyes and spooky sprinkles.
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    Print Pin Rate
    Prep Time: 15 minutes minutes
    Cook Time: 10 minutes minutes
    Chill time: 2 hours hours
    Total Time: 2 hours hours 25 minutes minutes
    Servings: 12 Cornflake cakes
    Calories: 266kcal
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    Ingredients

    • 200 g Semi-sweet chocolate (7oz) see notes
    • 120 g Butter (½ cup)
    • 4 Tablespoons Golden syrup
    • 150 g Cornflakes (5+½ cups)
    • 1 Large handful Edible eyes
    • 1 Large handful Halloween sprinkles

    Instructions

    • Line a cupcake tin or baking tray with 12 Halloween cupcake liners.
    • Over low heat on the stove, melt the chocolate, butter and golden syrup together.
    • Remove the pan from the heat and stir in the Cornflakes.
    • Divide the mixture equally between your 12 cases.
    • While the mixture is still wet, top with edible eyes & Halloween sprinkles.
    • Set in the fridge for 1-2 hours then enjoy!

    Notes

    • For best results, use semi-sweet chocolate, which contains around 50-60% cocoa solids. Milk chocolate will cause the mixture to seize. 
    • Store Cornflake cakes in an airtight container for up to 3 days.

    Nutrition

    Serving: 1Cornflake cake | Calories: 266kcal | Carbohydrates: 30g | Protein: 2g | Fat: 14g | Saturated Fat: 8g | Monounsaturated Fat: 4g | Cholesterol: 31mg | Sodium: 78mg | Potassium: 105mg | Fiber: 1g | Sugar: 28g

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      Halloween Candy Brownies

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