Easy Triple Berry Crumble Recipe (with Frozen Berries!)
The easiest triple berry crumble recipe, made with frozen berries! Topped with a delicious, buttery oat crumble topping and ready in just 10 minutes!
This celebrated recipe is almost 10 years old! Originally posted in 2015, it has been updated to include tips and tricks and ways to customize it to your liking. However, the original, amazing recipe is the same!
Table of Contents
What Makes This Berry Crumble Recipe Great
If you’re like me, you crave perfect spring berries all year long. Thanks to this frozen Berry Crumble Recipe, I can enjoy fresh berry desserts any time! My freezer is always stocked with a huge back of frozen mixed berries from Costco. Whether I decide to make a smoothie, this dessert, or anything else with berries, that frozen bag is my go-to!
The best part? Frozen berries aren’t just good frozen. Thaw them out, and you have yourself perfect, juicy berries for whatever dish you plan to make. Plus, if berries are in season you can make this perfect dessert with fresh berries instead of frozen. Customize to your preferences and use a variety of berries or make an easy blueberry crumble- any singular or mixed berry will work!
This easy berry crumble comes together in just 10 minutes and features the yummiest oat crumble topping made with rolled oats, brown sugar, all-purpose flour, and cold butter! A simple, perfect summer dessert the whole family will love any time of year!
Watch The Recipe Video
Note: You can also watch this recipe video on YouTube.
How to Make This Berry Crumble Recipe
Frozen fruit is best because it is frozen when it is at peak freshness. It has tons more flavor and nutrients. Plus, frozen organic fruit is much cheaper than fresh. Win-win!
Since the berries are getting baked, it is perfect to use frozen berries. They’re going to get all soft and mushy anyway. Even better? You can cook it with frozen berries! No need to thaw them. You can have this mixed berry crumble recipe prepped and in the oven in less than 10 minutes. Love that!
Ingredient Notes
- Flour & White Sugar: The berry filling comes together quite easily. Because the berries will sweat a bit, I like to thicken them with some added flour, along with a little granulated sugar for added sweetness. Some recipes use sugar and cornstarch, but I prefer flour!
- Lemon Zest: Don’t miss this step! The lemon zest adds brightness to the berry mixture, which is a must.
- Frozen Berries: My favorite frozen berries to use are a combination of raspberries, blueberries, and blackberries. I love the fruit mixture, but you could use just 1 berry or any combination of other berries. For larger fruit/berries like strawberries, cherries, mango, etc, I will pulse the frozen fruit in the food processor a few times so the chunks are more bite-size.
- Oat Crumble Topping: The real star of this frozen berry crumble is the oat crumble topping. Crunchy and toasty rolled oats mixed with unsalted butter, flour, and brown sugar. It crisps up atop the berries and gives this dessert a perfect sweet oat crumble crunch. Literally, the best oat crumble topping I have ever had!
Step-by-Step Instructions
- In a large bowl, make the berry filling by combining all ingredients and tossing to combine. Set aside.
- In a separate mixing bowl, make the oat crumble by combining all ingredients, then use your fingers to pinch the butter and incorporate it with the dry ingredients. Keep pinching and tossing together with your hands until evenly combined. You will be left with many pea-sized pieces of butter mixed in with the oat mixture. Set aside.
- Pour the berry filling into a 1-1/2 quart baking dish (or an 8×8 Pyrex baking dish, a pie baking dish, or even a 12″ cast iron skillet). Top with the oat crumble topping and spread to an even layer.
- Bake uncovered until the berry filling is bubbling and the oat crumble top is golden brown about 1 hour. Let cool for 1 hour before serving.
- Serve at room temperature. Delicious with ice cream or whipped cream.
Expert Tips
- Make-Ahead: You can make this up to step 4, then cover the unbaked crumble tightly and refrigerate for up to 5 days or freeze for up to 6 months. Bake it thawed or fully frozen until golden and bubbling, about 1 hour.
- Fresh Berries: This same recipe also works for fresh fruit too! Summer berries aren’t ripe all year long in many places so frozen fruit works great. But if it’s the summer months and you want to use fresh, do it! Just substitute the same amount of fresh berries for frozen. No other substitutions or changes in baking time are needed.
- Gluten-Free: Swap the regular flour for all-purpose gluten-free flour to make this recipe gluten-free. Bob’s Red Mill makes excellent gluten-free rolled oats that would work perfectly as well.
Serving Tips
Top this delicious dessert with a scoop of vanilla ice cream, and you’ve got the easiest and most amazing dessert to serve to guests or your family! A true crowd pleaser, trust me!
Storage Tips
Store leftovers in an airtight container in the refrigerator for up to 5 days. Heat up in the microwave and serve with vanilla ice cream.
To freeze, simply freeze leftovers in a freezer-safe, airtight container for up to 6 months. Thaw overnight in the refrigerator or go straight from frozen and bake at 350F until warmed and bubbly.
Recipe FAQs
Yes! Sub in whatever berry you love. This frozen berry dessert recipe would work so well with frozen strawberries, raspberries, etc. So grab your favorite frozen berry and transform this recipe into Frozen Blackberry Crumble, Frozen Blueberry Crumble, and more! The instructions stay exactly the same regardless of the berries you choose!
Alternatively, you can use fresh blueberries, raspberries, strawberries, or blackberries to make your fruit crumbles with fresh fruit.
I have not tried to do this myself, but the substitutions for a dairy-free berry crumble would be pretty easy. Simply swap out the butter in the oat crumble topping for vegan butter (I like Miyokos!), and serve with dairy-free vegan ice cream. Let me know how this turns out in the comments!
Yes! Simply freeze leftovers in a freezer-safe, airtight container for up to 6 months. Thaw overnight in the refrigerator or go straight from frozen and bake at 350F until warmed and bubbly.
More Ways to Use Frozen Berries
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Easy Triple Berry Crumble Recipe (with Frozen Berries!)
Ingredients
Berry Filling
- 4 cups frozen mixed berries*, NOT thawed (about 24 ounces frozen fruit)
- 3 tablespoons granulated sugar
- 3 tablespoons all purpose flour
- zest from 1 lemon
- pinch of salt
Oat Crumble Topping
- 1 cup old fashioned rolled oats
- 1/2 cup brown sugar
- 6 tablespoons all purpose flour
- 1/2 cup butter, cut into small cubes
Instructions
- Preheat oven to 350 degrees with the oven in the middle position.
- In a mixing bowl, make the berry filling by combining all ingredients and tossing to combine. Set aside.
- In a separate mixing bowl, make the oat crumble by combining all ingredients, then use your fingers to pinch the butter and incorporate with the dry ingredients. Keep pinching and tossing together with your hands until evenly combined. You will be left with many pea sized pieces of butter mixed in with the oat mixture. Set aside.
- Pour the berry filing into a 1-1/2 quart baking dish (or 8×8 pyrex baking dish, a pie baking dish, or even 12" cast iron skillet). Top with the oat crumble topping, and spread to an even layer.
- Bake uncovered until the berry filling is bubbling, and the oat crumble is golden brown, about 1 hour. Let cool for 1 hour before serving. Serve room temperature. Delicious with ice cream or whipped cream.
- See the Recipe Notes below for more tips, FAQ's and ingredient substitutions.
212 Comments on “Easy Triple Berry Crumble Recipe (with Frozen Berries!)”
Thank you!
Ready in 10 minutes for the oven.
Then 2 hours of cook and cool time.
And no one want to scroll through all that bullshit to get to the recipe
I want to triple the recipe any additional instructions?
I made this recipe today to accomodate my gluten free friend, and it turned out very good. I made it with Rhubarb and blueberries I froze from my garden…. Delicieux
thank you for sharing
Super easy and super yum! Thank you!
I just made this for my husband, it’s baking now, I also used corn starch and lemon juice, the best thing about crumble, it freezes. I always keep some in the freezer for when I feel a crumbly recipe is in order, you can also take it a step further and make your crumble into oatmeal cookie dough.
Great recipe!
Thank you!
Tasty and easy straightforward crumble. Added almonds to give a bit more crunch but beautiful recipe.
Yum! Thank you, Tracy!
So easy and so perfect. I add one egg yolk and some vanilla to the topping. And it’s delicious. Quick, last minute way to convince your guests that you’ve got everything under control!
Brilliant! Thank you, Barbara!
How long would you bake individual servings?
I’ve never tried an individual portion, but love this idea! I would think maybe 25 minutes? Or until the filling is bubbling and the topping is golden brown. If you try it, I’d love to know the cook time that worked for you!
I’m very surprised about how many 5 starts reviews this recipe has, I mean it’s fine but definetly not great by any means, the only good thing is how easy it is to put together other than that the taste and texture was mid, not bad but not good either
Sorry to hear you didn’t love it!
This recipe was delicious! I did lemon juice instead of lemon zest, and added some vanilla extract into the berries and the crumble mixture, PHENOMENAL!!!
Love this! Thank you! So so happy to hear you liked it!
So delicious! Everyone took leftovers home which made my family sad because we wanted the leftovers! I doubled the crumble on top because we LOVE crumble!
Doubling the crumble is brilliant! So glad you liked it!
Delicios!
Thank you!