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
Looking for even more?
You can find even more simple and delicious slice recipes in our books and ebooks, shop the range here.
Bert (Netherlands)
Hi. My 2nd layer was cooled down and the jeĺly was at room temperaturw and getting firm. So i had to bump the form to cover everything with the jelly. I thought i had waited too long. But after a night in the freezer the jelly was almost liquid. I coyld poor it out of the tin. I reheated it, let it cool down till it started to become stiff, But after a few hours in the tin the same problem, watery jelly, What has gone wrong?
Kathleen Morrison
I am looking for a recipe for the white layer, the one I used to make didn’t contain condensed milk – any suggestions please
Lauren
Hi Kathleen, hmm could you try just a traditional lemon cheesecake recipe for the filling?
Ange
I find the best way to describe the point where the jelly is ready to pour over the white layer is when it has “egg white” consustency.
Ange
consistency (oops!!)
Lauren
Thanks Ange!
Pinky
Hi, l made this jelly slice twice. When I prepared the jelly as directed, jelly was settled down while cooling. So I couldn’t pour the jelly or if I pour the hot boiling jelly over the condensed milk, it doesn’t stuck with it. Do you have any solutions. Please let me know. Thanks.
Lauren
Hi Pinky,
I keep stirring the jelly as it cools down to help stop it setting. If you find it’s starting to set, try adding it to the slice.
Jessica
What size tray do you use?
Lauren
Hi Jessica, I use a 28 x 18cm tray 🙂
Bruce Hallett
i make these all the time the only thing i do different is only use 170 grams of butter and it works well plus i use 2 packets of strawberry jelly or port wine jelly
3 cups Boiling Water for the 2 jelly packet plus
An extra 1 teaspoon of gelatine – for the jelly top ive had no prob with this and been making it over 20 years i also been a baker and pastry cook for 33 years
Lauren
I’m definitely going to have to try this next time 🙂
Ashlea @ Glamour Coastal Living
This brings memory of my childhood and my Nannies best ever jelly slice. Thanks for reminding me of this golden oldie x
Lauren
I think all Nans have the BEST recipes!
Karin @ Calm to Conniption
These are cute! I think I might add these to my prep list for Leni’s 1st birthday party next weekend. 😀
Lauren
Thanks lovely, I can’t believe she is 1 already!
Bec @ Styled by Bec
Loved it. Now I know the technique with the setting and cooling, I can’t wait to give it a go.
Lisa @ Chocolate Meets Strawberry
Gorgeous, Lauren! This slice definitely brings back childhood memories for me, too! Your layers looks absolutely perfect 😀