Microwave Fruit Crumble


Microwave fruit crumble is a delicious dessert that will please young and old alike. I’ve used it lots of times and have taught many other people how to make it too. It’s quick, easy, cheap and delicious. You’ll love it. If you are looking for a quick, easy and satisfying Christmas dessert that is also fat free, then this microwave fruit crumble recipe is for you. You can have it ready to eat in a matter of minutes by using the microwave.


A fruity microwave berry crumble in less than 5 minutes? Yes please. The best part? You won’t even have to share.

We all know my love for single serving recipes burns brightly. However not matter how many microwave recipes I make, the microwave crumble will always have a special place in my heart. It’s just SO easy and so customizable. Plus it has the added bonus of requiring only two dishes… it’s the perfect lazy girl (or guy) sweet treat!

Microwave berry crumble

My microwave crumble obsession first began with my famous microwave apple crumble. Since then, I’ve realized that it can be made with pretty much any fruit. So since it’s the season of love (and we had a stash of frozen berries) I knew it was time to make a berry version. This microwave berry crumble is a hit and quite possibly my favourite version I’ve made. The ingredient list is also packed with whole grains, fibre, and natural sweeteners to help make this a crumble you can have all day long.


Berries- I’ve used both fresh and frozen berries. I personally find frozen work a tiny bit better because they soften faster. I like using a combination of raspberries and blueberries but any berries will work. If you are using a bigger berry such as strawberry, don’t forget to slice them up!

Oats- Minute oats, quick oats or rolled oats all work in this recipe so choose whatever you use most often

Cinnamon & Ginger- The secret to a good crumble is in the spices. I love the addition of ginger to this but it is also 100% okay if you would like to omit it.

Cornstarch- Using a little bit of cornstarch helps thicken up the berry filling a little bit more. You can also substitute it for arrowroot powder if you aren’t able to use cornstarch.

Walnuts- These are 100% optional. I add them for a little extra crunch when I’m using frozen berries but they aren’t necessary.

Maple Syrup- Maple syrup adds some natural sweetness to this berry crumbleI personally love the subtle maple flavour it brings to this and have not tried substituting with any other liquid sweeter. If you decide to try using honey etc. let me know how it goes in the comments! Ps. you can also try a sugar-free maple syrup like this one!

Coconut Oil- I use coconut oil for a lot of my baking for the sole reason that I love the subtle coconut flavour it brings. However if you don’t have coconut oil on hand feel free to substitute it with butter!

Oat Flour- I love using oat flour in my recipes for a little extra fibre and whole grains. You can buy pre-made oat flour (like this one or you can just blend an equal amount of oats in a blender or food processor until smooth ( this is what I do). Note that I have never tested this recipe with any other type of flour, it *should* work but I can’t 100% say.

close up of microwave berry crumble


This is a question I’ve gotten asked a lot on many of my single serve microwave recipes. Some people just don’t have a microwave, or they don’t feel like using it or they’d just rather put it in the oven-and that’s totally okay! I personally like using the microwave because it’s just so quick and convenient. There’s no need to wait for the oven to heat up, and it takes only 2-3 minutes to cook. So I’m all about getting my berry crumble as quickly as possible. However if you’re someone that appreciates the slower things in life you can bake this in the oven at 350 degrees F for about 25 minutes or until the crumble begins to brown.

Microwave Blackberry Crumble (vegan mug cake)

 A quick and easy blackberry crumble for one, baked in the microwave.

Microwave Blackberry Crumble


My latest mug cake is more of a pudding than a cake.

A sumptuously fruity blackberry crumble.

Just like an oven-baked fruit crumble or crisp as it’s sometimes known, but ready in 2 minutes and just the perfect (generous) portion for one.

There’s no need to wait for Sunday to come around to enjoy a crumble with ice cream or custard.

Fancy something sweet? 

Just make it! 

From start to finish it takes less than 5 minutes.

Frozen blackberries in a glass mug


I use frozen blackberries to make this crumble, but you can use fresh blackberries.

It’s really handy to have a bag of frozen blackberries in the freezer, then you can make this quick pud in a few minutes and store the rest until you need them again.

They are also usually cheaper for a larger amount.


I’m a good Scots lass so I make my crumble topping with oats.

The crumble topping is made from flour, porridge oats (also known as rolled oats), brown sugar, a pinch of salt and dairy-free spread.

The brown sugar gives it a wonderful caramel flavour. I use demerara sugar, but any brown sugar would do.

That crumble topping looks likes it’s piled really high, but it does reduce quite a lot while it cooks. 

My husband would have liked more topping. 

If you would like more crumble topping and your mug is big enough, you could make a bigger batch by scaling up the crumble ingredients.


You don’t need much in the way of equipment to make this blackberry crumble. Here’s what you will need:

  • A microwave
  • A large microwave-safe mug
  • A bowl to mix the crumble in
  • A tablespoon (for measuring out the ingredients)
  • A teaspoon (for measuring out the ingredients)


I use a different sugar for the berries and the crumble, but you could use either brown sugar or caster sugar for both. 

I think it’s better with caster sugar to sweeten the berries and brown sugar for the crumble for that caramelised flavour, but don’t worry if you just have one or the other.

  • Frozen blackberries
  • Caster sugar
  • Plain flour
  • Porridge oats
  • Demerara sugar (or brown sugar)
  • Salt
  • Dairy-free spread (or vegan butter)


Once your microwave blackberry pudding is cooked, serve it:

  1. With a scoop of vegan vanilla ice cream (we like Swedish Glace Vanilla Ice Cream)
  2. Topped with a generous amount of dairy-free single cream.
  3. Topped with whipped vegan double cream
  4. Topped with a swirl of vegan squirty cream.
  5. With vegan custard (if you cook your crumble in a bowl, you could add the custard to heat at the same time), we like Alpro custard.
  6. On its own! Just dig in with a spoon.


  1. You can have it almost instantly, as soon as you have a craving for something sweet.
  2. It makes a great last-minute dessert.
  3. It’s frugal. It takes a small amount of ingredients to make this pudding.
  4. It can be counted as one of your five-a-day. It contains one complete portion of fruit.
  5. It’s the perfect (generous) portion for one.
  6. There’s very little washing up.
  7. It’s super quick!
  8. It’s very easy to make. Even the kitchen-shy can manage this recipe.
  9. It’s comforting!
  10. It tastes fabulous.

Microwave Apple Crumble

This Individual Apple Crumble recipe is quick and easy Comfort Food! You probably have all of the ingredients in your pantry. Just add your favorite variety of apple and you have a delicious dessert. Make as many individual servings as you need. I think I’ll have mine a-la-mode with a scoop of Vanilla Bean Ice Cream please! Enjoy!


  • Apple Base:
  • 1 large Apple, peeled, cored and sliced
  • 1 Tbsp Butter
  • 2 Tbsp Brown Sugar
  • 1 Tbsp Sugar
  • 1 tsp Cornstarch
  • 1 Tbsp Cinnamon
  • Topping:
  • 2 Tbsp Butter
  • 2 Tbsp Brown Sugar
  • 3 Tbsp Rolled Oats
  • 2 Tbsp All Purpose Flour
  • 1 Tbsp Cinnamon


  1. In a microwave safe bowl, add your sliced apples and butter. Microwave for 1 minute.
  2. In a separate bowl, combine brown sugar, sugar, cornstarch and cinnamon.
  3. Coat heated apples with sugar/cornstarch mix.
  4. In a small bowl combine all ingredients for the topping, using a fork or your hands cut the butter into the dry ingredients until crumbly.
  5. Sprinkle over apple base and microwave for 1:20 minutes or until the topping has set.
  6. Allow to cool for 2 minutes before serving.

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