With a yummy buttery biscuit base, a middle layer filled with a creamy cheesecake and then the sweet jelly topping – this really is the BEST Jelly Slice recipe and will become a family favourite in no time at all!
This classic Jelly Slice really is easy to prepare and you will find both regular and Thermomix methods in the recipe card below.
Table of contents
I’ve made a few versions of Jelly Slice in the past including this Strawberry Jelly Slice and my Christmas Jelly Slice, but this traditional Jelly Slice recipe is my favourite – a big call I know!
Jelly Slice Ingredients
Please note you will find the full list of ingredients in the recipe card below. You will need just SIX ingredients to make this classic Jelly Slice recipe.
- Butter – we use unsalted butter.
- Plain Biscuits – Marie, Nice or Digestive biscuits can all be used.
- Sweetened Condensed Milk
- Jelly Crystals – we like to use Strawberry Jelly but you can also use Raspberry Jelly if you prefer.
- Gelatine Powder
- Lemon Juice
How to Make The BEST Jelly Slice:
You will find the full method in the recipe card below.
Step 1. Make the biscuit base.
To make the buttery biscuit base, crush the biscuits (using a rolling pin or food processor or Thermomix) until the resemble bread crumbs and combine with melted butter. Transfer to a slice tin lined with baking paper and press mixture down with the back of a spoon to flatten the surface.
Step 2. Make the creamy cheesecake filling
Sprinkle the gelatine powder into a cup of boiling water and whisk to combine. Then, combine the sweetened condensed milk with the lemon juice. With your mixer on a medium speed, slowly add the gelatine mixture. Carefully pour over the top of the biscuit base and place into the fridge to set.
Step 3. Prepare the jelly
Make the jelly as per the packet instructions (don’t forget to add the cold water!) and add the extra gelatine powder. Allow it to sit at room temperature.
Step 4. Adding the Jelly Layer
The secret to achieving perfect layers with your Jelly Slice, is to make sure you let the cheesecake layer cool in the fridge and begin to set before pouring the COOLED jelly over the top. Return the Jelly Slice to the fridge to completely set.
And there you have it! This really is an easy Jelly Slice Recipe!
Tips for making the BEST Jelly Slice:
When adding the Jelly layer, I recommend pouring the jelly onto the back of a spoon before it lands on the cheesecake layer.
It is important to have extra baking paper hanging over the edges of the tin as this will help support the slice when all three layers are added.
If you try and pour jelly which is still a little warm over the cheesecake layer which hasn’t chilled for long enough you are going to end up with ‘holes’ filled with jelly in your slice – this doesn’t change the taste but can be an issue when you try to cut it into neat little squares.
I also suggest you place the tin you are making your Jelly Slice in, onto a baking tray before you add the jelly. This will make is a whole lot easier to transfer into the fridge.
You can use any brand of Jelly to make this recipe (we use aeroplane jelly), just follow the instructions on the back of the pack and add the extra gelatine to it as per the recipe instructions below.
Store this Jelly Slice in an airtight container in the fridge and enjoy within seven days.
Frequently Asked Questions
Jelly Slice is best stored in an airtight container in the fridge and consumed within five days.
No, this slice is not freezer friendly.
Watch How to Make this Easy Jelly Slice Recipe Here:
You may also enjoy these delicious recipes:
- Christmas Jelly Slice
- Easy Hedgehog Slice
- No Bake Passionfruit Slice
- Lolly Slice
- Rice Bubbles and Honey Slice
- No Bake Malteser Slice
- Easy Trifle Recipe
The BEST Jelly Slice Recipe
Equipment
- 1 x 28 x 18cm slice tin
Ingredients
- 250 grams Marie biscuits – or any other plain biscuit – or any other plain biscuit
- 180 grams butter melted
- 395 grams sweetened condensed milk
- 2 & ½ teaspoons gelatine
- ¾ cup boiling water
- 2 Lemons juiced
- 1 packet to strawberry jelly
- Boiling Water as per jelly packet instructions
- An extra 1 teaspoon of gelatine – for the jelly top
Instructions
- Line the base and the sides of a slice tin with baking paper, making sure you leave plenty hanging over the sides.
- Crush the biscuits until they resemble fine breadcrumbs. You can use a rolling pin or food processor.
- Add the melted butter to the crushed biscuits and mix until combined. Pour the mixture into the lined slice tine and press down with the back of a metal spoon and place in the fridge to chill.
- In the meantime, add 2 1/12 teaspoons of gelatine to ¾ of a cup of boiling water and stir until it has dissolved. Place the condensed milk into a bowl and while whisking, add the dissolved gelatine mixture and the lemon juice. Continue to whisk until mixture is smooth and has combined.
- Remove the set biscuit base from the fridge and pour over the condensed milk layer. Place back in the fridge, until it just begins to start to set – approximately 30 – 45 minutes
- While the slice is chilling, you can make the strawberry jelly as per the packet instructions – adding an extra teaspoon of gelatine. Allow the jelly to cool until it has reached room temperature.
- Remove the slice from the fridge and carefully pour the jelly over the slice and place it back in the fridge to completely set approximately 6 hours – overnight is best.
- Remove the set slice from the fridge and using a hot knife, cut into squares.
Thermomix Instructions
- Line the base and the sides of a slice tin with baking paper, making sure you leave plenty hanging over the sides.
- Place the biscuits in the bowl and crush for 5 seconds on speed 9.
- Add the butter and heat for 3 minutes on 80 degrees speed 2.
- Remove biscuit mixture from the bowl and pour into the lined tray. Push the mixture down with a metal spoon to create a flat surface. Place in the fridge for 30 minutes to set.
- To make the filling, combine the gelatine in a jug with the boiling water and allow to cool slightly. In a clean bowl, add the lemon juice and condensed milk and mix for 45 seconds on speed 4. After 5 seconds, remove the measuring cup and carefully pour the gelatine mixture in. Remove the set slice base from the fridge and pour over the filling.
- Put back into the fridge for 30 minutes.
- In a clean Thermomix bowl, add the hot water and heat for 3 minutes on 90 degrees speed 2.
- Add the jelly crystals and one extra teaspoon of gelatine and stir until they have dissolved. Pour jelly into another bowl and allow it to cool until it has reached room temperature.
- Remove the slice from the fridge and carefully pour the jelly over the slice and place it back in the fridge to set for approximately 4 hours – overnight is best.
- Remove the set slice from the fridge and cut into squares.
Notes
Nutrition
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Jess
Does the extra gelatine in the jelly help stabilise it forlonger? Was just wondering how long it can be kept out before the jelly “melts” wanted to make something different for a cake stall but not sure if it’d last
Lauren Matheson
Hi Jess, The extra gelatine does help to stabilise it. Depending on the temperature outside, you can probably leave it out for an hour or two 🙂
Helen Dobson
I made this today fir the first time everything was fine except the jelly does not stay on top of the cake it’s sliding off. What’s gone wrong.
Lauren Matheson
Hi Helen, I’m sorry to hear the jelly is sliding off the top layer – it’s possibly due to the brand of jelly you used? Alternatively you can add an extra tsp of gelatine to the jelly mixture next time. I hope that helps x
Iris
I made this. Had a craving as ate it during my childhood. It was ok but bit of a flop because I didn’t know what size tray to use. I tried to use a size that looked appropriate for a slice but yours must be smaller as mine didn’t turn out with such a thick layer of mixture it was more thinly distributed. Served it to guests in a cup with ice cream x2 layers so it was like a trifle.
Leila
Hello! I see the recipe calls for condensed milk. Is this the same as sweetened condensed milk, and if not, what will make the white layer sweet?
Lauren Matheson
Hi Leila, Yes it is the same as sweetened condensed milk, I usually use nestle xx
David
I have been eating everyone else’s jelly slice for years so I decided to make my own for the first jelly slice and the second layer layer will not set (condensed milk and gelatine) not sure why, it still tastes yummy.
Lauren Matheson
Hi David, I’m sorry to hear the condensed milk layer isn’t setting for you. Is it still liquid or is it just soft? You can also pop it into the freezer to firm. Merry Christmas
Michelle
I made this a few weeks back for my sister’s burthday and plan on making it again for Christmas. Lovely, simple recipe. Thank you for sharing!
Lauren Matheson
Oh thanks so much Michelle, I’m so glad you enjoy it. Merry Christmas!
Joy
Hi can l freeze jelly slice
Lauren Matheson
Hi Joy, No I’m sorry this recipe isn’t freezer friendly. The jelly layer doesn’t freeze well.
Tania
I have made this for years and when going to parties and taking a plate I make them as small cupcake sized. Same recipe just make individual slices in cupcake tin. I get about 16. Young and old love them. The only difference from your recipe is you make up jelly with one cup of water. I just wait till cool enough to pour over.
Lauren Matheson
That is such a great idea!
susanne craig
hi are your subscibtions for email updates free im interested in your lovely recipes thank you susanne
Lauren Matheson
Hi Susanne,thank you for your lovely message. Yes it’s free to subscribe 🙂
Tiarni
Just wondering how many this makes roughly? thank you
Lauren Matheson
Hi Tiarni, I usually get around 20 – 24 pieces.