Chocolate Cornflake Slices

Easy, make-ahead, chocolate cornflake slices. Dense and fudgy with an almost brownie like texture, they are perfect with a glass of cold milk or cup of tea. A great bake for children's parties.

Chocolate Cornflake Slice being cut into bars

These chocolate cornflake slices are a chocoholics dream and so easy to make.

The hardest thing about making them, is waiting long enough for the chocolate topping to set. In fact, I sometimes cheat and pop them in the freezer for 20 minutes, so they firm up faster.

chocolate cornflake slice step by step recipe

These slices are a great make-ahead bake for children's birthday parties or family gatherings. They will happily sit in a sealed container for a couple of days before you need them.

Cornflake Slices with glossy melted chocolate topping

They are also my go to recipe for charity bake sales, as they seem to be enjoyed by everyone who try's them.

Make sure you have the recipe to hand, as I guarantee you will get asked for it!

Close up of Chocolate Cornflake Slice


  1. Add a handful of raisins to the base mix to give it a fruity twist. Dried cranberries or chopped dried apricots would also work well.
  2. Make it nutty by adding a handful of chopped pecan nuts or hazelnuts.
  3. The recipe can easily be doubled to feed a crowd. Use two 20cm square cake tins or one large roasting tin if you want to double the recipe.
  4. For extra decadence, drizzle the top with melted white chocolate.
  5. You could try using other cereals like rice krispies, coco pops or crushed up weetabix, instead of cornflakes.
  6. The chocolate cornflake slices can be frozen for up to three months. Place the cut slices in freezer safe containers. Make sure you separate each layer of slices with baking parchment to prevent them from sticking together.
Bowl of Cornflakes


    Cornflakes are a breakfast cereal made by toasting flakes of corn. 

    First created by William Kellogg back in 1894, for his brother, a superintendent at Battle Creek Sanatorium. He wanted a healthy breakfast to give to his patients.

    Chocolate Cornflake Slice ready for eating

    William Kellogg wanted to add sugar to the corn flakes, which his brother disapproved of, so he set up his own company to produce corn flakes for the wider public.

    They are still one of the most popular breakfast cereals today, nearly 130 years later!

    Overhead photo of Chocolate Cornflake Slices


    Chocolate Cornflake Slice  #bar #chocolate #baking #cornflakes #easybake


    This no bake Malteser Tiffin is another easy recipe and great for children's parties.

    I love the chocolate peanut butter combination and these chocolate peanut squares are oh so moreish.

    Brownies are taken to the next level with these Easy Nutella Brownies. Fudgy and dense and super chocolatey. They wont last long.


    Another classic brownie recipe with sweet biscoff spread swirled through the brownie mix.

    Why not have a look at these lovely recipes from fellow food bloggers, using cornflakes as the main ingredient!

    No Bake Peanut Butter and Cornflake Tiffin from Jac at Tinned Tomatoes. I love no bake sweet treats like this, and the addition of peanut butter pairs really well with the chocolate.

    Foodie Quine's Granny's Cornflake Biscuits are a great bake for the kids to get involved with, and are inspired by her grandmothers recipe. 

    Or how about this classic Cornflake Tart from Hodge Podge Days, a retro school dinner pudding!

    Cornflake and chocolate topping


    Step 1: Weigh out the dry ingredients - self raising flour, cocoa powder, caster sugar, desiccated coconut and cornflakes.

    Ingredients for chocolate cornflake slice

    Step 2: In another bowl, melt together the dark chocolate and butter (in a microwave will be fine), then add the vanilla extract.

    Melted chocolate and butter

    Step 3: Mix the melted chocolate into the dry ingredients until they are all combined.

    Unbaked chocolate cornflake slice

    Step 4: Press down firmly into a baking tin and bake for 20 minutes in a preheated oven.

    Unbaked cornflake slice in baking tin

    Step 5: Leave to cool then spread over more melted chocolate and sprinkle with cornflakes.

    Baked cornflake slice

    Step 6: Leave the chocolate to set before cutting into slices. You can pop them in the fridge at this point to speed up setting!

    Finished chocolate cornflake slice

    Ready to give these easy chocolate cornflake slices a try? Read on for the full ingredients list and instructions.

    step by step cornflake slice image

    chocolate cornfake slices
    Yield: 12

    Chocolate Cornflake Slices

    Chocolate Cornflake Slices

    Prep time: 10 MCook time: 20 MTotal time: 30 M
    Easy chocolate cornflake slices, perfect with a glass of milk or cup of tea.


    • 120g Self Raising Flour
    • 2 TBSP Cocoa Powder
    • 100g Caster Sugar
    • 50g Desiccated Coconut
    • 30g Cornflakes
    • 100g Dark Chocolate
    • 160g Butter
    • 1 TSP Vanilla Extract
    • For the topping:
    • 100g Dark
    • 100g Milk Chocolate
    • 1 TBSP Butter
    • 10g Cornflakes to decorate


    1. Preheat the oven to 180°c (160°fan) and line a 20cm square baking tin with baking paper.
    2. In a large bowl mix the self raising flour, cocoa powder, caster sugar, desiccated coconut and cornflakes together.
    3. In another bowl, melt the dark chocolate and butter (a microwave is fine), then add in the vanilla extract.
    4. Mix the melted chocolate and butter mixture into the dry ingredients. Once combined press into the tin.
    5. Bake in the oven for 20 minutes. Leave to cool.
    6. Once completely cool, melt the topping ingredients together in a microwave and spread on top of the cornflake slice. Sprinkle over the cornflakes and leave to set before cutting into slices.
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    Created using The Recipes Generator


    1. Kristine Nicole Alessandra19 May 2020 at 09:43

      Oh my. You made me so hungry looking at the photos of these delicious treats. I am saving the recipe and will make this chocolate cornflake slices on the weekend. I will make two batches so I can share them with my sister and my daughter too.

    2. These sound so nice and very moreish as well, will be adding these to my save for later to have a go at

    3. These look amazing! In our house they would probably be gone well before the ganache gets a chance to set on the top!

    4. Oh these look like the perfect chocolatey treat! I bet my kids would love these and they'd love to help make them too.

    5. yep these sound delicious. a bit like chocolate crackles made with rice bubbles...

    6. Stop this right now...I could literally just eat this. It looks yummy and may try to make this at the weekend x

    7. Oh my goodness yes please, this looks absolutely delicious. I have to admit during lockdown I have had a craving for homemade cakes almost constantly.

    8. That looks quite delicious and easy to follow as well. I'm pretty sure the kids would love this dish.

    9. Oh my gosh this looks SO good and super moreish too! I am definitely going to be giving this recipe a try with the kids so thanks for sharing! x