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

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!!
4.78 from 9 votes
Print Pin Rate
Course: sweets
Cuisine: Slices
Prep Time: 20 minutes
Cook Time: 38 minutes
Total Time: 58 minutes
Servings: 16 serves
Calories: 363kcal

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) brown sugar packed
  • 3/4 cup (170g) unsalted butter melted
  • 1 tsp vanilla extract
  • 395 g sweetened condensed milk
  • 1 tbsp lemon zest finely grated , approximately 1 lemon
  • 1/3 cup lemon juice
  • 2 large egg yolks
  • 1/2 tsp lemon extract optional

Instructions

Conventional Method

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

Thermomix Method

  • Preheat oven to 170 degrees celsius (160 degrees if fan forced). Grease and line a 17X28cm slice tray with baking paper, allowing the edges to overhang.
  • Melt the butter and vanilla in the Thermomix bowl for 3 minutes, Speed 2, 50 degrees.
  • 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.
  • 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. Remove from oven and put aside (leave the oven turned on).
  • 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.
  • 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.
  • Pour mixture over crumb crust in baking dish and spread into an even layer. Sprinkle the remaining crumble mixture over the top of the lemon layer.
  • Bake in oven for 23 - 26 minutes or until lightly golden. Remove from oven and allow to cool.
  • Cover and refrigerate for at least 2 hours (preferably overnight) then take it out and cut into squares. Store in airtight container in refrigerator.

Notes

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

Nutrition

Calories: 363kcal | Carbohydrates: 55g | Protein: 7g | Fat: 13g | Saturated Fat: 8g | Cholesterol: 57mg | Sodium: 150mg | Potassium: 198mg | Fiber: 2g | Sugar: 28g | Vitamin A: 375IU | Vitamin C: 3.1mg | Calcium: 95mg | Iron: 1.8mg
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Creamy Lemon Crumble Bars

 

 

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

  1. Melissa says:

    This slice is absolutely delicious! Very easy and so yummy

    1. Lucy Mathieson says:

      Yay!! I’m thrilled you enjoyed it!

  2. 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

  3. Zarine says:

    Hello,

    I would like to bake these for the school easter bake sale.
    How many bars does this recipe make please?

    1. Lucy Mathieson says:

      Hi Zarine, the slice is very rich so you can cut it into small pieces (around 16-20). xx

      1. Melissa says:

        My lemon and crumble layers keep mixing together, like the lemon layer is too liquidy to hold the crumble. What am I doing wrong? I have made it once sucessfully and now 3 times the top and middle layers are one! Please send help

        1. Lucy says:

          Hi Melissa, hmmm that’s very odd!!! I would try cooking the lemon filling a little longer and letting it cool slightly before adding the crumble to the top. Also try and make our crumble on top a little bit smaller!

  4. Pingback: An Interview With Thermomix Blogger Lucy From Bake Play Smile
  5. Sue says:


    this my all time favourite go to recipe, quick and easy

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