Simple Apple Crumble Recipe with Oats

This apple crumble recipe with oats has been a family favourite for as long as I can remember. A simple crumble recipe passed down from my mum, this recipe is sweet, delicious, and easy to make. 

Apple crumble cooked in red cast iron pan. Ready to serve with wooden spoon.

If you’re not a big apple crumble fan I promise this recipe will convert you! 

It’s sweet from the apples that stew away in a layer of brown sugar and cinnamon. Then crisp and buttery on the top from the delightful crumble topping that is filled with oats. 

Served warm with condensed milk ice cream, this is my family’s favourite dessert.

This apple crumble recipe is so easy to make, requiring only a few simple ingredients, most of which are probably already in your pantry. 

I love making recipes that only require a few simple ingredients like my crustless quichechocolate chip cookies, and shortbread. Learning how to make simple but delicious food for your family will help you save so much money on groceries

I like to use up sad apples from the fridge or, when I’m feeling lazy, a can of apple pie filling.

Did you know that you can make this crumble topping by itself and freeze it for busy nights or just to keep it on hand?

Close up of apple crumble in pan

Why you will love this Simple Apple Crumble Recipe

  • Sweet, crisp and delightful to eat warm with ice cream
  • Tried and true family recipe
  • Cheap and easy to make with simple pantry ingredients

Apple Crumble Ingredients

Apples – I think Granny Smith apples work best for apple crumble. They taste really sweet, and stew nicely but any apples work great for this simple recipe. The apples don’t need to keep their shape as much as an apple pie. 
Brown Sugar – To add sweetness to the apples while they cook. The apple slices will stew as they cook in the oven. If you prefer, swap this out for Demerara sugar or maple syrup. 
Cinnamon – Adds a delightful flavour to the apples as they stew with the brown sugar.
Flour – All-purpose flour, and of course, unbleached!
Baking Powder – Adds a little rise to the crumb.
Butter – 
I always bake with salted butter, but you can use unsalted if you like. 
White Sugar – 
Standard white sugar is used in this crumble mixture to give it its crunch.
Rolled Oats – I suggest rolled oats for this recipe as quick oats will be too fine to add texture to the crumble topping.

Cast iron pan filled with cooked apple crumble mixture. A scoop of melted vanilla ice cream is on top.

Fruit Crumble Variations 

  • Rhubarb crumble
  • Berry crumble
  • Peach crumble
  • Cherry crumble

Tips to Make the Best Apple Crumble

  • Sprinkle on more brown sugar and cinnamon to add a deeper flavour and sweetness to the stewed apples. I never measure and add lots of cinnamon to mine!
  • You can swap out the cinnamon for allspice or nutmeg if you prefer. 
  • Add in pear or berries if you have them. This crumble recipe works well for any fruit but apples are my family’s favourite. 
  • Double the crumble recipe to make a bigger batch. We often double the topping but not the apples to enjoy more crumble.
  • This apple crumble will store well in the fridge, after it’s been cooked. You could easily make this a day before serving to guests if you need to. 
  • If you don’t like oats or don’t have any on hand, simply substitute them with the same amount of flour. 
Cast iron pan filled with cooked apple crumble. A scoop of melted vanilla ice cream is on top.

How to Make Apple Crumble

Step One – Preheat the oven to fan bake, 190 degrees. 

Step Two – Peel the apples then chop them into four segments and remove the core. Slice them into thin pieces. Place the apples into a 20 x 20cm oven-proof dish. Layering them on top of each other. 

Step Three – Sprinkle the brown sugar and cinnamon over the apples. Add filtered water to the apples, you want the water to be just below the top layer of apples. 

You can find step by step images and tips on making the crumble in my crumble topping post.

Step Four – Sift flour and baking powder into a large bowl. Add the softened butter to the dry ingredients. Rub the butter into the dry ingredients until it begins to look like breadcrumbs.

Step Five –Add the sugar and mix to combine. 

Step Six – Add the rolled oats and mix the crumble topping to combine all the ingredients together.  

Step Seven – Sprinkle the crumble mixture on top of the apples. Cook in the oven for 30 minutes or until golden brown and the apples are soft.

Step Eight – Serve warm with your favourite ice cream, cream or yoghurt.

Cast iron pan filled with cooked apple crumble. A scoop of melted vanilla ice cream is on top.

Apple Crumble Recipe FAQ 

Can I Prepare Apple Crumble The Night Before?

I often bake an apple crumble the night before I have guests around. That way it’s ready to be warmed up and served quickly. Bake the apple crumble then let it cool down completely. You can wrap the dish in cling wrap and place it in the fridge to be heated the following day. 

Is This Apple Crumble Recipe Healthy? 

This recipe isn’t healthy but it tastes good. If you want a healthier version of this recipe, use wholemeal flour instead of all-purpose flour and coconut sugar instead of white sugar. The ratios are 1:1. You could also swap out the brown sugar with maple syrup or Demerara sugar.

What Are The Best Apples For Apple Crumble?

Granny Smith, Royal Gala or Honey Crisp are the best apples to use as they don’t turn into mush after baking. They are sweet and go well with the cinnamon and brown sugar.

Can You Make This Apple Crumble Without Oats?

Yes! If you don’t like oats or don’t have any on hand don’t stress. Simply substitute them with the same amount of flour. You could also crush up some nuts or desiccated coconut to add in if you want some texture to the crumble topping. 

Can I Swap the Flour to be Gluten-Free? 

Absolutely. I was gluten-free for quite a few years but that didn’t stop me from making my favourite dessert. This recipe is suitable to make with a plain gluten-free flour mix. I wouldn’t suggest using just coconut or almond flour for this recipe as they absorb a lot of liquid and may not work.

How Long Will This Apple Crumble Last In The Fridge? 

Store the crumble in an airtight container for up to 7 days, if it lasts that long!

Can You Keep Crumble Topping Mix In The Fridge?

You can make this apple crumble topping 1-2 days before baking. Make sure to store it in an airtight container in the fridge until you need to use it.

Can You Freeze Apple Crumble? 

I wouldn’t suggest freezing a cooked apple crumble as the apples and topping will go soggy when thawed out. Try freezing the crumble topping mixture by itself in an airtight container. Use this within 2 months of freezing to avoid freezer burn or ice clumps. Don’t forget to label your packaging!

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Yield: 6 Serves

Simple Apple Crumble Recipe with Oats

Apple crumble cooked in a red cast iron pan. A scoop of vanilla ice cream is on top with a wooden spoon to serve

This apple crumble with oats recipe is crunchy, and sweet. The apple is perfectly stewed in sweet brown sugar and cinnamon then topped by a thick layer of buttery, oat filled crumble. A family favourite and sure to become yours too!

Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes

Ingredients

  • 4 apples, sliced
  • 2 tbsp brown sugar
  • 2 tbsp ground cinnamon
  • 1/2 cup all-purpose flour
  • 1 tsp baking powder
  • 80g butter, soft and cubed
  • 1/2 cup white sugar
  • 1 cup oats

Instructions

  1. Preheat the oven to fan bake, 190 degrees.
  2. Peel the apples. Chop them into four segments and remove the core. Slice into thin pieces. Place the apples into a 20 x 20cm oven-proof dish. Layering them on top of each other.
  3. Sprinkle the brown sugar and cinnamon over the apples. Add filtered water to the apples, you want the water to be just below the top layer of apples. 
  4. Sift flour and baking powder into a large bowl. Add the softened butter to the dry ingredients. Rub the butter into the dry ingredients until it begins to look like breadcrumbs
  5. Add in the sugars and mix this well.
  6. Add the rolled oats and mix the crumble topping to combine all the ingredients together.  
  7. Sprinkle the crumble mixture onto the apples. Cook in the oven for 30 minutes or until golden brown and the apples are soft.
  8. Serve warm with your favourite ice cream, cream or yoghurt.

Notes

  • Sprinkle on more brown sugar and cinnamon to add a deeper flavour and sweetness to the stewed apples. I never measure and add lots of cinnamon to mine!
  • You can swap out the cinnamon for allspice or nutmeg if you prefer.
  • Add in pear or berries if you have them. This crumble recipe works well for any fruit but apples are my family’s favourite.
  • Double the crumble recipe to make a bigger batch. We often double the topping but not the apples to enjoy more crumble.
  • This apple crumble will store well in the fridge, after it's been cooked. You could easily make this a day before serving to guests if you need to.
  • If you don’t like oats or don’t have any on hand, simply substitute them with the same amount of flour.

Nutrition Information:

Yield:

6

Serving Size:

1

Amount Per Serving: Calories: 333Total Fat: 12gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 4gCholesterol: 29mgSodium: 171mgCarbohydrates: 56gFiber: 6gSugar: 33gProtein: 3g

Estimated nutrition information is provided as a courtesy and is not guaranteed.

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