This is my favourite blueberry crumble recipe for one made in the microwave with oat crumble topping. Perfect to serve as an indulgent pudding after dinner.
This easy blueberry crumble recipe is very versatile and can be made to suit Low FODMAP and gluten free diet or dairy free diets. It can also be made with regular – plain or cake flour.
Why make this recipe?
- Easy & quick to make microwave pudding
- Single serving portion for one – very economical to do
- Can be made gluten free or with regular flour
- Swap the blueberries for other fruit or berries you have
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MY FAVOURITE PUDDING RECIPES
Is it a blueberry crumble, cobbler or a blueberry crips?
It depends where you are in the world. My blueberry crumble recipe is called ‘crumble’ in the UK and Europe and ‘crisp or cobbler’ in the USA. It’s a basically soft fruit baked with a crumbly topping of flour, sugar and butter (and sometimes oats for extra crunch).
You can make the crumble (or crisp or cobbler) from most fruits (and any combination you like) apart from the very watery or soft ones such as watermelon (which are better eaten fresh or you can also can watermelons to preserve them for later).
The crumble topping recipe is very simple (flour, butter, sugar) and can be made in advance and kept in the fridge (or freezer) for later.
This means that you can easily cook the fruit in the microwave (or on the hob), add the ready made topping and finish warming everything up the microwave for extra 30 seconds or so.
Equipment you will need to make blueberry crumble for one
- Microwave
- Microwave suitable bowl, large mug or soup bowl
Can I make this blueberry crumble in the oven?
I’ve developed this recipe to be cooked in the microwave, because it’s so convenient and quick.
But, yes, of course, you can use the oven for making this recipe, but it wont’ be very economical if you are making crumble just for one person. Saying that, if you already have other dishes in the oven, it makes perfect sense to add your pudding in as well.
To use your oven, heat it up to 350 Fahrenheit or 180 Celsius and bake your crumble for about 20-25 minutes or until the top of the crumble goes lightly brown. Make sure that you use oven suitable dish (which needs to be small enough for one portion).
Also if you are thinking of scaling up this blueberry crumble for one recipe and want to make it for the whole family, it does make a perfect sense to use an oven, if you prefer.
Notes on ingredients for your blueberry crumble
For the fruit filling you will need
- blueberries fresh or frozen (can be other small berry fruit if you like)
- lemon juice (or lime juice)
- sugar (any kind of sugar, honey, replacement sugar etc)
- cinnamon, apple pie spice, mixed spice or gingerbread spice or similar
I’ve used cinnamon in this recipe, but my apple pie mix spice works also well with this recipe. If you don’t have lemon or lime juice, you can also use other citrus fruit juices or zests from my orange zest replacement list.
For the crumble topping you will need
- flour – gluten-free flour or normal plain (all purpose) flour (I sometimes use a gluten free flour mix with my homemade potato flour or add rice or lupin flour)
- sugar – white caster or granulated sugar (golden or light brown sugar is fine too or other types of darker sugars such as coconut sugar or coconut sugar alternatives)
- oats – Scottish, rolled oats or other types of oats
- butter – or plant based butter – melted
- tiny pinch salt
The other reason, why this blueberry crumble is made for one person is because I make it gluten free.
If you don’t have a gluten free flour or you can have gluten, please just carry on reading, because you can easily swap the gluten-free flour for normal plain (all-purpose flour) without any problem.
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What other fruits can you use for making this microwave crumble for one?
Fruits that you can use to keep this recipe Low FODMAP
- Strawberry
- Raspberry
Other fruits you can use with the same cooking and ingredients instructions
If you are not worried about following any particular dietary requirements, you can also use any other softer fruits, such as:
- Rhubarb – cook it for a little longer and add more sugar
- Apple – longer cooking will be required (extra 30 sec -1 minute)
- Pear – longer cooking will be required (extra 30 sec -1 minute)
- Blackcurrant – Red Currant
- Blackberries
- Dark Cherries (Morello Cherries)
- Peaches – perfect with an almond flour instead of regular for the crumble topping
- Apricots
You can also mix the fruit together to give you different flavours or if you don’t have enough to make the whole portion.
How to make Microwave Blueberry Crumble (for one)
Mix the blueberries with the sugar, spice and lemon juice.
Put in a microwavable bowl or a large mug and microwave on full power for 2-3 minutes. Stir after each minute. You should end up with a slightly runny blueberry jam.
The blueberries don’t need to be completely cooked through as they will carry on cooking with the crumble on the top.
Whilst the blueberries are cooking, mix the dry ingredients for the topping in a bowl.
Melt the butter (but don’t make it too hot) and add to the dry ingredients to form a crumble mixture.
When your blueberries are nearly done, top the bowl with the crumble topping and put back to the microwave for further 3-4 minutes.
Check that the flour in the crumble mixture feels baked/cooked – if not add another 30 sec or so.
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How to make this crumble recipe yours – dietary requirements
This recipe is super versatile. Apart from the different types of fruit and and spices you can use, there are also ways you can make this microwave crumble recipe your own, based on your diet:
Gluten Free Microwave Crumble – use gluten free flours and gluten free (certified) oats
Dairy Free Microwave Crumble – use plant based butter instead of regular butter
Scaling up this recipe
I’ve tested this recipe mainly with one bowl and for one person.
When I make more I usually make the crumble into a separate bowl, because then I don’t need to re-calculate the recipe amounts and don’t need to use another bowl or baking tray to make the crumble.
Making this recipe for two is easy enough. Make the recipe twice into two bowls and place them both in the microwave at the same time.
It will take about 1,5 the amount of time when you make two bowls as opposed to just one.
Start with the timings in the recipe and then add 1-2 minutes if the fruit or the crumble is not quite done. This really depends on the fruit and flour you use, so it will vary from time to time.
How to serve your blueberry crumble
Eat your blueberry crumble straight away, when it’s hot. This is a pretty healthy berry crumble for one, so it’s perfect as it and can be eaten on it’s own.
If you want to add some extra calories you can serve with homemade Vanilla Ice Cream or hot custard cream.
You can also use any other kind of cream or fruit sauce if you wish. I love using my homemade pear syrup to drizzle over the vanilla ice-cream, it’s so delicious! You can also get inspiration for additional toppings from my toppings for pancakes list, which is pretty comprehensive!
You can of course eat it cold or re-heat it later if you want to.
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How to store & keep individual serving blueberry crumble
This recipe for microwave blueberry crumble for one is best eaten straightaway. It’s warm and comforting and perfect as it is.
But, if you need to keep the crumble for later (or you made extra portions, that you don’t need right now), leave the crumble to cool down first, then cover with something like a plastic bag, cling film, bowl cover or a even a small plate and place in the fridge.
How long does microwave blueberry crumble last for ?
The crumble will last about 2-3 days in the fridge. It’s fairly well preserved with the butter and sugar, so it might last even a bit longer.
The wonderful crispness will probably disappear and the crumble topping won’t be as crunchy as when you first make it.
How to re-heat your single serving blueberry crumble
Once you are ready to eat your crumble, warm it up for 30 seconds in the microwave to make the crumble hot again. You can also eat the crumble cold straight from the fridge if you really want to.
Can you freeze microwave blueberry crumble?
The blueberry crumble can be also frozen, but when you defrost it, the topping will be much soggier than before and will probably sink into the berry compote.
The microwave blueberry crumble for one will still taste great, but it won’t look amazing. You can add more toppings, ice-cream or fresh fruit to cover it and serve.
To freeze your crumble, leave it to cool down first and then place in a suitable freezer container. Place in the freezer and eat within 3 months.
If you’ve used frozen blueberries to make your crumble originally, you shouldn’t really freeze them again.
This recipe & me
Sometimes it’s nice just to have a pudding for one. I work from home most days and often feel absolutely starving by lunch time.
This usually means that I have my ‘dinner’ at lunch time and by the time my other half comes home from work I’m already eating my pudding!
And the reason why this is a microwave version is because it’s quick to do for one person and also when I was writing my recipe for Blueberry & Rhubarb Crisp a lot of people were asking me whether you can make it in the microwave.
Well, the good news is that, whilst I wouldn’t make the large crisp (or crumble) in the microwave because the topping get’s way too soggy, on the small scale it doesn’t seem to matter that much (or maybe I’m too hungry to care!)
As you can see from my photos live of a food blogger is a very hungry one and sometimes, it’s impossible to wait to eat the food until after the photos are taken.
I’m getting rather a dab handed at eating with one hand and taking photos with the other!
Microwave Blueberry Crumble for One
Equipment
- microwave
- bowl or large mug suitable for microwave cooking
Ingredients
Filling
- 1 cup blueberries fresh or frozen
- 1 teaspoon lemon juice
- 2 teaspoons sugar
- 1/4 teaspoon cinnamon apple pie spice, mixed spice or similar
Topping
- 2 tablespoons gluten-free flour or normal plain (all purpose) flour
- 1 tablespoon sugar
- 3 tablespoons oats Scottish or rolled oats
- 2 tablespoons butter melted
- tiny pinch salt
Instructions
- Mix the blueberries with the sugar, spice and lemon juice.
- Put in a microwavable bowl or a large mug and microwave on full power for 2-3 minutes. Stir after each minute. You should end up with a slightly runny blueberry jam.
- The blueberries don't need to be completely cooked through as they will carry on cooking with the crumble on the top.
- Whilst the blueberries are cooking, mix the dry ingredients for the topping in a bowl.
- Melt the butter (but don't make it too hot) and add to the dry ingredients to form a crumble mixture.
- When your blueberries are nearly done, top the bowl with the crumble topping and put back to the microwave for further 3-4 minutes.
- Check that the flour in the crumble mixture feels baked/cooked – if not add another 30 sec or so.
- Serve hot as it is or with a vanilla ice cream, yoghurt or cream
Nutrition
This blog post was originally written on 22 October 2020 and last updated 5 April 2023
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Thank you for sharing this recipe – I love blueberries and this is a great way to make a crumble. I’m a student and this crumble is so much better than eating shop bought puddings.
Love this blueberry crumble – so easy to make and taste delicious too!