Slow Cooker Raspberry Oaty Crumble

Slow Cooker Raspberry Oaty Crumble

Read on for my easy recipe for Slow Cooker Raspberry
Oaty Crumble!

Although the summer term at school has now started, there was still a little chill in the air this morning when I took my eldest daughter to school. So, as I thought she might get a bit cold wearing just ankle socks and no tights, a warming dessert was in order after dinner!

Slow Cooker Raspberry Oaty Crumble

I love a crumble and thought I could make it more spring-like by adding in some raspberries. As usual, I used my slow cooker, as I find it very convenient to be able to put your food in and go off and do other things until it is ready.

I hadn’t made a crumble in the slow cooker before but had heard it was possible so thought I would give it a go. I was pleased to see that the top did go crunchy on top as it does in the conventional oven. It tasted great so I will definitely be doing this again (hopefully in autumn though!).

That lovely fruit as you start to assemble the crumble in your slow cooker pot looks delicious already.

Fruit filling in the slow cooker

Adding the crumble topping and it is looking great!

Slow Cooker Raspberry Oaty Crumble

The crumble starts to crisp up and isn’t soggy at all as you might worry from cooking it in a slow cooker. With all the slow cooker baking I do I had no doubts in my mind!

Slow Cooker Raspberry Oaty Crumble

Serving up and enjoying the delicious crumble topping covering the fruity filling.

Raspberry crumble

More Slow Cooker Desserts

For more slow cooker puddings, here are a couple of ideas:

Slow Cooker Raspberry Oaty Crumble

A delicious raspberry crumble made in your crockpot, with an oaty crumble topping
5 from 1 vote
Print Rate
Course: Dessert
Cuisine: Slow Cooker
Prep Time: 10 minutes
Cook Time: 2 hours 30 minutes
Total Time: 2 hours 40 minutes
Servings: 6
Calories: 474kcal


  • 160 g plain flour
  • 40 g wholemeal spelt flour or use 200 g plain flour total instead
  • 125 g butter
  • 100 g golden caster sugar
  • 70   g porridge oats
  • 3 large Bramley apples mine weighed around 650 g before peeling and coring
  • 150 g raspberries
  • 50 g golden caster sugar


  • Make the crumble in the usual way; sift the flour into a bowl, rub in the butter, stir in the sugar and oats.
  • Prepare the fruit and place it in the slow cooker.
  • Tip in the sugar for the fruit and give it a stir. Spray the sides of the slow cooker bowl where the crumble will be with some cooking mist (I used Lurpak), to prevent sticking. 
  • Finally, tip the crumble mixture over the fruit and press it down lightly.
  • Now switch the slow cooker on to high, place a clean tea towel under the lid to stop water dripping onto the crumble, and cook on high for 2 hours.
  • After two hours, place the lid ajar and cook for another 30 mins to an hour until the crumble firms up and starts to go crispy around the edges.
    Serve and enjoy!
Tried this recipe?Tag me @bakingqueen74 or use hashtag #bakingqueen74!

I am linking this recipe up with the Slow Cooked Challenge hosted by Janice from Farmersgirl Kitchen. Every month you’ll find bloggers there linking up their tasty slow cooked recipes. Do go over and have a look, I always find inspirational dishes in Janice’s linkup.

I am also linking up with Credit Crunch Munch from Fuss Free Flavours and Fab Food 4 All, hosted this month by Michelle from Utterly Scrummy Food for Families. I used up the end of a bag of porridge oats and a bag of plain flour for this recipe (hurray!) and also use the slow cooker as a cheaper means of cooking.

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[…] Perfect after school treat, Slow Cooked Apple & Raspberry Oat crumble from Baking Queen […]

Fuss Free Helen

That is so useful to know that the top will crisp up if you open the lid a little. You really are the slow cooker queen. Thanks for linking to Credit Crunch Munch!

The weather is set to turn cold again next week so we’ll all be glad of your crumble recipe! Looks fantastic! #Bakeoftheweek


This looks super easy! I’m not a fan of apple but my husband loves apple pies so I’ll have to give this a try! 🙂

Rebekah Esme

That looks so good and easy to make! I’ll have to give it a go! 🙂

Thanks for linking to me lovely lady 🙂 This again looks divine. I love crumbles and although I sometimes make the filling in a slow cooker I never try the whole job so will give it a go.

You’re so clever with a slow cooker, thanks for another great idea which I must try and thanks for entering #CreditCrunchMunch:-)

Thank you for your kind comments about #SlowCookedChallenge and for your entry. I love what you have done and it great that the topping still goes crispy!

That looks simply stunning and so simple to make. Love blogs that give step my step guides for people. It really helps people like me who are unless in the kitchen! Stephen :o)


I love the addition of raspberries, such a summery flavour of crumble! Such a fab idea cooking it in the slow cooker, I need to invest in one!

What a great idea. I must try this!

That looks delicious, I use the slow cooker to make crumbles too. I have never put raspberries in with apples though and will definitely have to try it before it gets too warm. Thank you for sharing x