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!

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.
What Ingredients do I Need for this Microwave Berry Crumble?
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 (may favourite are these).
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 crumble. I 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.
Can I use an Oven?
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.
I love seeing you make my recipes! Don't forget to tag me on Instagram- @nourishedbynic or leave a comment on this recipe below letting me know how it turned out!
📖 Recipe
Microwave Berry Crumble
Ingredients
Topping
- 1 tablespoon butter or coconut oil softened
- ½ tablespoon maple syrup or sugar
- 2 tablespoon oats quick, minute or rolled
- 2 tablespoon oat flour (all-purpose flour also works)
- 1 teaspoon cinnamon
Berry Filling
- 1 cup berries of choice frozen or fresh
- ¼ cup walnuts chopped (optional)
- ½ tablespoon butter or coconut oil softened
- ½ tbsp maple syrup, honey or sugar
- ½ teaspoon cinnamon
- sprinkle of ground ginger
- 1 teaspoon cornstarch
Instructions
- In a small bowl mix together topping ingredients until a crumble forms, set aside.
- In a separate small microwave safe dish combine berry filling ingredients and stir.
- Carefully spread the topping over the berry filling. Microwave for about 2-3 minutes until top is a little crispy and filling looks cooked (start watching carefully at 1 min 30 seconds as every microwave is different).
- Carefully remove form microwave (it will be hot!) and top with ice cream
Bethany
Super quick and easy! Tried using different fruits and it satisfied my sweet tooth each time. #nourishedholiday
Kristen
I appreciate this recipe because its super quick and I can eat it on a weekday. I didn't have walnuts so I used pecans instead and loved it. The only downfall I ran into was the topping was powdery for me and never crisped up. Might try with melted butter next time instead of coconut oil.
#nourishedspring
Nicole Addison
Hi Kristen,
So sorry to hear your topping didn't get crispy! I find sometimes microwave cook times may also vary so I would recommend maybe cooking for longer as well (try 15 second increments)!
Nicole
A
Love this! So quick and very easy and a great way to make one or two servings without having to heat up the oven.