Apple Slice with Streusel Topping

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This delicious apple slice is the ultimate comfort food. It has a buttery sweet shortcrust base, a lush apple and cinnamon filling and topped with a crispy, German style brown sugar streusel topping.  Thermomix and food processor recipe included.

Close up image of apple slice with streusel topping against a coloured background

This recipe has been a family favourite for a long time. I first started making the slice before I had my Thermomix so the recipe includes instructions for making this in the food processor or TM.

I’ve mentioned before that I’m a very lazy cook. I’m reminding you now because although this is technically a three-layer slice it is so easy that you just have to make it! The layers are simply added one after another and then the sliced is baked off for 45minutes.

Serve the apple slice straight out of the oven with custard and ice-cream for a lovely warming dessert or refrigerate and serve cold for morning tea. This is a very versitile sweet! Regardless of whether you eat it hot or cold I’m sure it will become a firm favourite.

Apple Slice on a white background with floral teacup

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Apple Tart with Streusel topping on white background with floral tea cup

Apple Slice with Streusel Topping

Julie Carlyle
German Style Apple Streusel Slice with a buttery sweet shortcrust base, a lush apple and cinnamon filling and topped with a wonderful crispy German style brown sugar streusel topping. 
5 from 3 votes
Prep Time 10 mins
Cook Time 45 mins
Total Time 55 mins
Course Dessert
Cuisine American, German
Servings 18 squares
Calories 338 kcal


Apple Slice Base

  • 300 g plain flour
  • 190 g salted butter cut in cubes
  • 80 g caster sugar
  • 1 egg
  • 1 tsp vanilla paste

Apple Filling

  • 350 g apple sauce
  • 6 green apples peeled, cored and diced
  • 1 tsp lemon zest
  • 1 Tbs lemon juice
  • 1 tsp cinnamon

Streusel Topping

  • 300 g plain flour
  • 190 g salted butter cut in cubes
  • 100 g brown sugar


Apple Slice Base

  • Line a 30cm x 20cm baking tin with paper.
  • Preheat oven to 180 degrees C or 350F.
  • Add the flour, butter and sugar to TM bowl or food processor. Process TM 1 min/Speed 7.
  • Add the egg and vanilla essence mix to combine. TM 15sec/Speed 7
  • Place the mixture into the prepared baking tray and press the dough down to form an even layer.

Apple Filling

  • Peel and core the apples. Roughly dice the apple into 1 1/2cm cube.
  • Add the apple lemon zest, cinnamon and apple sauce to a large bowl. Stir to combine. Reserve for later use.

Streusel Topping

  • In the TM bowl or food processor add flour, butter and sugar. Process until the mixture looks like breadcrumbs. TM 1 min/Speed 7

Assembly the Apple Slice

  • Spread the apple mixture over the base of the slice.
  • Spoon the crumble over the slice allow it to sit in clumps to the top of the apple layer. 
  • It's nice to squeeze bits together so the mixture isn’t too small and crumbly on the top.
  • Bake for 45 minutes until the crumbs are lightly golden.


The slice will be soft whilst it's hot but once refrigerated it will become much easier to cut neatly.


Calories: 338kcalCarbohydrates: 41gProtein: 4gFat: 17gSaturated Fat: 10gCholesterol: 54mgSodium: 157mgPotassium: 130mgFiber: 2gSugar: 13gVitamin A: 580IUVitamin C: 3.5mgCalcium: 22mgIron: 1.8mg
Keyword Apple, Apple pie, Apple Slice, Apple Tart, Dessert, Food Processor, Healthy snack
Tried this recipe?Let us know how it was!

If you’re looking for more easy slice recipes check out this Passionfruit Slice. It’s another recipe that takes no effort for the level of YUM you get from the results.

Do you have any family favourites that you would like converted for the Thermomix. Please let me know and I would be happy to try and convert them for you.

Square image of apple streusel on a white background

I’d also love to hear your thoughts on this recipe if you make it. Please feel free to leave a comment and a rating below.

One last thing, I would love to offer you my FREE Thermomix cookbook. The book includes 10 of my favourite recipes. Take a look and the pretty pictures. 🙂

Image showing free Thermomix cookbook on iPad

Happy Cooking 🙂

6 thoughts on “Apple Slice with Streusel Topping”

  1. Sarah says:

    5 stars
    This was a hit! So easy to make, and super delicious. I had a heap of apples to use up and was searching for recipes when I came across yours. I didn’t have any apple sauce, but used two grated apples to fill in the gaps between the apple chunks and it worked perfectly. Thanks for the delicious recipe!

  2. india says:

    hi is it possible to do this recipe without a food processor? thanks!

    1. Julie Carlyle says:

      Hi India, Yes it’s possible. You will just need to rub the flour and butter together as you do for a scone recipe and then mix through the remaining base ingredients.

  3. Cathy says:

    5 stars
    Made it for the office staff at work, massive hit with everyone! Thankyou

    1. Julie Carlyle says:

      Hi Cathy, I am so pleased you liked it and the recipe was well received at the office 🙂 I love hearing comments like yours, it inspires me to make more recipes 🙂

  4. JulieO says:

    5 stars
    I made this today and I had to let you know that it’s the nicest apple slice I’ve ever made!

    The recipe worked exactly as stated and I didn’t make too much of a mess when I cut it into squares either, even though it was still quite warm (couldn’t wait for it to chill) 🙂

    So melt in the mouth. Thank you for such a lovely recipe.

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