I absolutely love this recipe for Lemon Crumble Slice. It's by far one of my favourites (and that's really saying something, given my addiction to all things involving sugar). I love this slice because not only does it have the yummiest oaty layers, but it seriously has the most amazingly creamy and delicious lemon filling. Creamy + lemony + oaty = all kinds of awesome.
The Thermomix really does make this lovely little recipe so simple. There's really not much to it. Once you've made the oat layers, you whip up a simple lemon filling. No mess, no hassle. Gosh it's recipes like this that really make me love my Thermomix. A LOT!!
So what are you waiting for? If you're a fan of lemon flavoured desserts and slices, then you really, really must make this. You'll love it - I pinky promise!!!
Ingredients
- 1¼ cups (155g) plain flour
- 1¼ cups (110g) rolled oats
- ½ teaspoon salt
- ½ teaspoon bi-carb soda
- ½ cup (100g) raw sugar
- ½ cup (80g) packed brown sugar
- ¾ cup (170g) unsalted butter, melted
- 1 teaspoon vanilla extract
- 1 X 395g can sweetened condensed milk
- 1 tablespoon finely grated lemon zest (approximately 1 lemon)
- ⅓ cup fresh lemon juice
- 2 large egg yolks
- ½ teaspoon lemon extract
Instructions
- Thermomix Instructions:
- 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 TM bowl for 40 seconds, Speed 2, 50 degrees.
- Scrape down the sides of the bowl.
- Melt for a further 1 minute, 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 tray and press firmly into an even layer.
- Bake in preheated oven for 15 minutes or until lightly golden.
- Remove from oven and put aside (leave the oven turned on).
- Place the zest of 1 lemon into the TM bowl.
- Grate for 20 seconds on Speed 6.
- Scrape the sides of the bowl.
- Repeat steps 13-14 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.
Trudy says
Can this be served warm?
Lucy says
Absolutely!
Sarah says
Have made this soooo many times, it’s my go to slice. I add a touch more lemon and less sugar to suit my taste and leave out the lemon extract. Love how all ingredients are such staple pantry items for me and I get to use my fresh lemons.
Lucy says
Fantastic!!!!
Anita says
I made this for a family party and got SOO many compliments. It really was delicious! I didn’t have lemon extract though, just added an extra splash of lemon juice. Highly recommend this slice!
Lucy says
Fantastic!!
Jess says
Looks lovely, any idea who long in the fridge? I like to use these sorts of Slices for lunch boxes.
Lucy says
Hi Jess, it will be fine for up to 5 days in the fridge.
Sally says
How can I make the slice gluten free?
Sandy says
Can you please tell me if this slice is suitable to freeze?
Lucy Mathieson says
I personally dont like to freeze this slice as I have found that the filling can go a bit runny when defrosted. That being said, I know other people who are happy freezing it!! xx
Shelley Elliott says
This recipe is delicious. Thank you.
Tammy Scott says
Can the oats for substituted for something else to make this Gluten Free?
Lucy Mathieson says
Hi Tammy, I'm not sure as this is the only way I've made it. You could try experimenting though!!
kandis says
I have made this 4 times. so good. i don't have lemon extract so skip it. still tastes great
Lauren says
That's excellent!
Kayann says
ok so I'm confused, at number 11 you say to spread half of the crumb mixture into the tray, are we then supposed to side aside the other half? or do we leave it in there & zest the lemon on top of it? The instructions aren't clear.
Lucy says
Yes you set the second half of the crumble mixture aside (as that is what you crumble over the top). The lemon zest forms part of the middle (the creamy portion).
Lucy says
I'm keen to try this. Has anyone tried with out the lemon extract?
Tessa - Down that Little Lane says
wowsers, just added the ingredients to my list to get this afternoon 🙂