Creamy Lemon Crumble Bars (most popular recipe!)

If you love lemons, then you’re going to LOVE these Creamy Lemon Crumble Bars with an oaty base, creamy lemon filling and crunchy crumble on top!

I don’t usually like to play favourites, but this time I’m going to! This is by far one of my favourite recipes of all time. It’s no secret that I love lemons (I was one of those weird kids who would happily suck on a lemon… so strange!). And I’ve always loved making Lemon and Coconut Slice, but sometimes it’s nice to have a little change. A lemony change, if you will.

Creamy Lemon Crumble Bars

In a delicious little sugar-filled world, these Lemon Crumble Bars are the bomb. They have a beautiful oaty base, the most amazing creamy lemon centre and a crunchy crumble topping. Does it get any better than that!?

Creamy Lemon Crumble Bars

The best thing about these bars is that as they cook, the lemony centre becomes almost the same kind of texture as a baked cheesecake (and do not even get me started on my love of cheesecake!).

Creamy Lemon Crumble Bars

This Creamy Lemon Crumble Bar is absolutely perfect on it’s own… or you could go totally wild and serve it warm with a drizzle of custard or a scoop of ice cream. I personally prefer the wild option!

Creamy Lemon Crumble Bars

Can I give you a little tip? If you want really neat little squares, then you need to let the slice sit in the fridge overnight before you cut it. If you’re not fussed with how it looks, then feel free to slice it after an hour or two. But please, please, if you can, leave it in the fridge overnight. There’s nothing better than a neatly cut slice (sorry, that’s my OCD coming out!).

Creamy Lemon Crumble Bars

So there you have it – my new favourite recipe! Move over Lemon and Coconut Slice, I have a brand new bestie!

Creamy Lemon Crumble Bars

Creamy Lemon Crumble Bars

Creamy Lemon Crumble Bars - Conventional Method

These Creamy Lemon Crumble Bars are perfect on their own for morning or afternoon tea.... or warm it up, smother in ice-cream and voila, you have an amazing dessert!!
Course Slices
Cuisine Baking, Slices
Prep Time 20 minutes
Cook Time 38 minutes
Total Time 58 minutes
Servings 16
Author Bake Play Smile

Ingredients

  • 1 1/4 cups (155g) plain flour
  • 1 1/4 cups (110g) rolled oats
  • 1/2 tsp salt
  • 1/2 tsp bi-carb soda
  • 1/2 cup (100g) raw sugar
  • 1/2 cup (80g) packed brown sugar
  • 3/4 cup (170g) unsalted butter, melted
  • 1 tsp vanilla extract
  • 1 X 395g can sweetened condensed milk
  • 1 tbsp finely grated lemon zest approximately 1 lemon
  • 1/3 cup fresh lemon juice
  • 2 large egg yolks
  • 1/2 tsp lemon extract optional

Instructions

  1. Preheat oven to 170 degrees celsius (160 degrees if fan forced).
  2. Grease and line a 17X28cm slice tray with baking paper, allowing the edges to overhang.
  3. In a large bowl, whisk together flour, rolled oats, salt and bi-carb soda.
  4. Stir in the raw sugar and brown sugar and mix until smooth.
  5. Stir vanilla into melted butter and pour mixture over dry ingredients.
  6. Stir mixture until well combined.
  7. Pop half of the crumb mixture into the bottom of the prepared tin and press into an even layer. Bake in preheated oven for 15 minutes.
  8. Remove from oven and put aside (leave the oven turned on).
  9. In a bowl, whisk together sweetened condensed milk, lemon zest, lemon juice, egg yolks and lemon extract until well blended.
  10. Pour mixture over crumb crust in baking dish and spread into an even layer.
  11. Sprinkle the remaining crumble mixture over the top of the lemon layer.
  12. Bake in oven for 23 - 26 minutes or until lightly golden.
  13. Remove from oven and allow to cool.
  14. Cover and refrigerate for at least 2 hours (preferably overnight) then take it out and cut into squares.
  15. Store in airtight container in refrigerator.

Recipe Notes

The lemon extract is optional - it gives a stronger lemon flavour to the slice. 

 

Creamy Lemon Crumble Bars - Thermomix Method

These Creamy Lemon Crumble Bars are perfect on their own for morning or afternoon tea.... or warm it up, smother in ice-cream and voila, you have an amazing dessert!!
Course Slices
Cuisine Baking, Slices
Prep Time 20 minutes
Cook Time 38 minutes
Total Time 58 minutes
Servings 16
Author Bake Play Smile

Ingredients

  • 1 1/4 cups (155g) plain flour
  • 1 1/4 cups (110g) rolled oats
  • 1/2 tsp salt
  • 1/2 tsp bi-carb soda
  • 1/2 cup (100g) raw sugar
  • 1/2 cup (80g) packed brown sugar
  • 3/4 cup (170g) unsalted butter
  • 1 tsp vanilla extract
  • 1 X 395g can sweetened condensed milk
  • 1 tbsp finely grated lemon zest approximately 1 lemon
  • 1/3 cup fresh lemon juice
  • 2 large egg yolks
  • 1/2 tsp lemon extract optional

Instructions

  1. Preheat oven to 170 degrees celsius (160 degrees if fan forced).
  2. Grease and line a 17X28cm slice tray with baking paper, allowing the edges to overhang.
  3. Melt the butter and vanilla in the Thermomix bowl for 3 minutes, Speed 2, 50 degrees.

  4. Add the plain flour, rolled oats, salt, bi-carb soda, brown sugar and raw sugar. Mix for 20 seconds on Reverse, Speed 2. Scrape down the sides. Mix for a further 20 seconds on Reverse, Speed 2.

  5. Spread half of the crumb mixture into the bottom of the prepared tin and press into an even layer. Bake in preheated oven for 15 minutes.

  6. Remove from oven and put aside (leave the oven turned on).
  7. Place the zest of 1 lemon into the Thermomix bowl. Grate for 20 seconds, Speed 6. Scrape the sides of the bowl. Repeat until you have a very finely grated zest.

  8. Add the condensed milk, lemon juice, egg yolks and lemon extract and mix for 30 seconds, Speed 4. Scrape the sides of the bowl and mix for a further 30 seconds, Speed 4.

  9. Pour mixture over crumb crust in baking dish and spread into an even layer.
  10. Sprinkle the remaining crumble mixture over the top of the lemon layer.
  11. Bake in oven for 23 - 26 minutes or until lightly golden.
  12. Remove from oven and allow to cool.
  13. Cover and refrigerate for at least 2 hours (preferably overnight) then take it out and cut into squares.
  14. Store in airtight container in refrigerator.

Recipe Notes

The lemon extract is optional - it gives a stronger lemon flavour to the slice. 

Creamy Lemon Crumble Bars

 

 

71 thoughts on “Creamy Lemon Crumble Bars (most popular recipe!)”

  1. Lee-Anne says:

    Sounds delish, Lucy…another sumptuous slice I’ll be making. 🙂

    1. Bake Play Smile says:

      This is definitely one of my new favourites! xx

      1. Angela says:

        Hi when adding the crumb mixture on top of the lemon filling does it just sit on top or does it fall into the filling I’m thinking it would be heavier than filling

        1. Bake Play Smile says:

          Hi Angela, no it’s never gone into the filling and I’ve made this slice a LOT!! Just make sure you crumble it up over the top (and don’t have big, huge chunks) and it will be fine! xx

          1. Angela says:

            Thanks for the reply I’m making it now can’t wait

          2. Bake Play Smile says:

            Anytime!

          3. Angela says:

            Hi sorry to be a pain does the condensed milk go thick I’ve been whisking mine and its runny

          4. Bake Play Smile says:

            Hi Angela, it won’t thicken while you whisk it – but it will thicken when it’s cooked. xx

      2. Rebecca says:

        Do they have to be stored in the fridge once there cut? An how long do they keep for? Thanks

        1. Bake Play Smile says:

          Hi Rebecca, it’s best to store them in the fridge. They will keep refrigerated for 3-4 days. xx

          1. Kirby says:

            Could they be frozen for school snacks?

          2. Bake Play Smile says:

            Hmmm I haven’t personally frozen them… so not sure! Sorry!

  2. Danielle L says:

    These look delicious, I am a sucker for anything lemon!

    1. Bake Play Smile says:

      I couldn’t agree more Danielle! 🙂

  3. Loving all these slice recipes and they look quite easy for me to do. I reckon I might give this ago for a dessert. I think I’d eat the whole thing for morning tea. 😉

    1. Bake Play Smile says:

      Fantastic Bec! This would be perfect for dessert… smothered in ice-cream!!

  4. I am making this tomorrow. Every Wednesday night we have friends over and take it in turns to cook, tomorrow is my turn and this is it! Can’t wait.

    1. Bake Play Smile says:

      Thats fantastic Jodi!!! I hope they love it! xx

  5. Wow, yum! We have an abundance of lemons on our tree and I am such a sucker for anything tangy and creamy at the same time!

    1. Bake Play Smile says:

      Me too Emma! Me too! xx

  6. Mmm, lemon crumbley slice, I might have to stop putting them in my vodka and start making food with them! 🙂

    1. Bake Play Smile says:

      Bit of vodka on the side will go ok too!!! xxx

  7. Yet another brilliant slice Lucy! I will be making this as soon as the lemons on our tree are ready to pick!! 🙂

    1. Bake Play Smile says:

      Thanks so much Jodie! I do love anything lemony!! xxx

  8. Jodi says:

    I am going to be bookmarking this as I am always on the look out for something new to make as a treat for dessert! Yum! 🙂

  9. We are HUGE lemon fans here. This recipe makes me all kinds of happy. 🙂

  10. Sounds yummy Lucy, another great slice recipe from you as always! I really don’t make enough slices, I don’t know why. But I shall start with this one I think.

    1. Bake Play Smile says:

      Haha I think I need to expand as I do seem to be making lots of slices lately!!! Cake… here I come!

  11. How delicious Lucy! I love anything lemoney x

    1. Bake Play Smile says:

      Me too Lisa! It’s the best! xx

  12. Em says:

    Mmm. I love citrus desserts. Will have to add this to my bake list! Thanks for the recipe! E x

    1. Bake Play Smile says:

      Thanks Em – I’d love to hear how it goes! xx

  13. Carla says:

    This looks delicious, I love slices with lemon fillings x

    1. Bake Play Smile says:

      Me too Carla!! xx

  14. Salivating! And printing… looks fantastic, my kids will love this.

    1. Bake Play Smile says:

      Thanks Seana – I hope they love it as much as I did 🙂

  15. Kim says:

    I just have to say, YUM!
    My mum loves lemon deserts and I love a good slice and a relatively quick recipe, so I’m excited, think I’ll be giving this on a go this week, we also have my dads 60th bday party this weekend and our colour theme is grey & yellow so this would go great on the lolly / dessert bar!

    Thanks for sharing!

    1. Bake Play Smile says:

      Oh this would be absolutely perfect then!! Hope your dad has a great birthday! xx

  16. Maxabella says:

    My, that looks like HEAVEN! Pinning this immediately. x

    1. Bake Play Smile says:

      Oh thank you so much!! I totally loved this recipe!!

  17. Andrea says:

    This looks so yummy! I have got it in the oven as I type! Smells Devine!
    Thank you for another great recipe!

    1. Bake Play Smile says:

      Yay!!! Thanks so much Andrea! xx

  18. Lucy this looks sooooo good!
    I just need an excuse to test it out now. xx

    1. Bake Play Smile says:

      Thanks Danielle!

  19. Jess says:

    Hi! Have you tried freezing this slice? Thanks sounds amazing!

    1. Bake Play Smile says:

      Hi Jess, no I havent actually (it never lasts that long!). I don’t know how well it would freeze though – I’m wondering if the crumble would lose it’s crunch perhaps?

  20. Lucy says:

    Has anyone tried with out the lemon extract? I don’t have any on hand.

    1. Bake Play Smile says:

      Hi Lucy – a few people have said that they’ve used lemon juice instead and it was fine! xx

  21. rhona liddle says:

    hi there. lovely recipe and i’ve subscribed to your site. what is raw sugar please? i know around the globe we all often refer to various things differently but i’m in u.k and dont know what it is. i’ve got all kinds of sugar here in my pantry but no idea which one to use for the raw sugar bit. will granulated (what you’d put in tea or coffee) or caster (finer than granulated and used mostly for baking, comes in white and slightly beigey golden colour) or demerarer which is brown/golden quite grainy and light soft muscavado and dark muscavado. i’m using half and half of the muscavados for the compacted sugar bit you speak of as they’re both compacted and i didnt know whether you meant light or dark so hence mixed, but really desperate to know what raw sugar is. oh i also have natural palm sugar blocks which might be classed as palm sugar? i use them in curries a lot. please help. thanks so much for your time. x

    1. Bake Play Smile says:

      Hi there, raw sugar is a large granulated sugar. If you can’t find it you can use caster sugar or white sugar instead. Xx

  22. A says:

    Made these today! What a treat!!!! For raw sugar I used Demerara sugar, and used soft brown (dark) for the packed sugar. I also used both lemons and limes for the zest and juice (I love limes!) and it has turned out perfectly. Thank you so much! I’m not an instinctive baker and my cakes are always dire- this is the most successful thing I have ever baked, and it’s way better than the ones in Starbucks!!!! X

  23. Karen says:

    I made this slice and my whole family thought it was great. I used brown sugar instead of raw sugar, zest of 2 lemons to get a whole tablespoon (plus I love lemon) and accidentally left out the egg yolks (but it didn’t seem to matter). Even hubby couldn’t wait for it to cool 2-3 hours. Will definitely make it again.

    1. Bake Play Smile says:

      Fantastic!!!!

  24. Barb says:

    Hi Lucy, What size pan is 17X28cm? I don’t know what cm is in inches. same with 395g, don’t know what that is in teaspoon/tablespoon or cup size either. I like that you did put the other ingredients in cup measurements. Makes it easier for us that don’t use g measurements. This sounds so delish I have to make it soon!

  25. Alicia says:

    Hi, just wondering if I could put 2 whole eggs in instead of just the egg yolks? I never know what to do with the egg whites and would rather not waste if possible..

    1. Bake Play Smile says:

      Hi Alicia,
      I find that it’s best to stick to the 2 egg yolks as it gives the best result, however, you could use the 2 whole eggs if you prefer.
      🙂

  26. Cathy says:

    Hi Lucy,
    What a fantastic recipe! So easy to make (even with a 5month old in the house!) and it got rave reviews when I brought it to morning tea! I especially love how the top and bottom layers are the same thing but look so different- it definitely has a very favourable ‘effort to kudos ratio’!
    As I have a very laden lemon tree and no lemon extract, I just upped the zest and juice slightly (I used 3 lemons).
    I’ve no doubt I’ll be making this again in the future!

    1. Bake Play Smile says:

      That is FANTASTIC! I’m so glad you enjoyed it! It’s definitely a fave here too xxx

  27. The Crumble mixture came out quite solid more like flapjack. It was fine for the base but tricky to put over the top.I used Demerara and soft brown sugar as I am in the UK. Would that have made it more solid?

  28. Ali says:

    Hi Lucy,
    I made this in the thermomix…delicious. Just wondering how I can print the thermie option when printing the recipe?
    Thanks

    1. Bake Play Smile says:

      Hi Ali, thank you! I’m so thrilled you liked them! Unfortunately, the older recipes on my site only have the option of printing the conventional method (you can print both the conventional and Thermomix recipes in all of the newer recipes). xx

  29. Natalie says:

    Just made these for the first time – super easy and delicious! I used lime instead of lemon and added the pulp of a passionfruit to the filling, and 1/4 cup coconut to the base/topping mix – a lovely tropical treat!

    1. Bake Play Smile says:

      Oh that’s SUCH a great idea!! I’ll have to do that! xx

  30. Lynne says:

    I also used lime juice and zest instead of lemon. Upped the juice quantity to two thirds of a cup, used a can of reduced sugar condensed milk and halved the amount of raw and brown sugar in the base. It was delicious and I could almost convince myself that it was healthy!

    1. Lucy Mathieson says:

      Perfect!!! YUM!

  31. Melissa says:

    This slice is absolutely delicious! Very easy and so yummy

    1. Lucy Mathieson says:

      Yay!! I’m thrilled you enjoyed it!

  32. Rachael says:

    Oh My Goodness Luce………What a absolutely delicious slice. I baked two today as the school holidays are coming up and I need something sweet to have on hand for when the “I’m hungry and you dont feed me complaints start rolling in”! I managed to sneak a piece off the end before quickly hiding it in the freezer!
    Thanks again for another fab recipe!

    1. Lucy Mathieson says:

      Hehehehe I’m sooooo glad you snuck yourself a bit!!! This is always one of my favourite slices to make! The only problem is that it’s far too addictive!!!! xx

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