This blueberry crumble, easy to make with blueberries and a buttery oat brittle cookie topping, is simple, easy, and the best blueberry dessert we can imagine. Simple and spectacular. Better make a double batch.

Adapted from Ian Knauer | The Farm | Houghton Mifflin Harcourt, 2012

This blueberry crumble recipe with its oatmeal cookie topping and simple burbling blueberry filling that’s not too sweet and not too tart is exactly what you bring to a backyard bash when all you want is mad crazy gratitude and an empty dish to take home.

It’s simple. It’s easy. And it’s the most crowd-pleasing summer dessert we’ve got in our repertoire. One taste and we think you’ll understand. Kindly note, it also functions admirably as breakfast when topped with blueberry ice cream, which is essentially oatmeal with fruit and milk, yes?!

Why Our Testers Loved This

It was no surprise that the testers adored this classic blueberry crumble recipe. They loved the juxtaposition of “warm fruit with the crisp, crunchy texture of the topping” and were delighted that it was such a quick and easy recipe. Lori W. has declared it “a new family favorite.”

Natalie Reebel calls this “one of the best fruit desserts–and not just blueberry–I’ve ever made.” High praise, indeed.

Notes on Ingredients

Ingredients for blueberry crumble--blueberries, flour, butter, oats, lemon, white and brown sugars, and vanilla.
  • Fresh blueberries–If blueberries aren’t in season and you have a stash of frozen ones in your freezer, you can substitute those.
  • Lemon juice–The amount of juice you use will depend on how tart your blueberries are. I recommend using freshly squeezed lemon juice.
  • Unsalted butter–If you use salted butter, reduce the amount of salt in the crumble to 1/4 teaspoon.

How to Make This Recipe

A person mixing blueberries, flour and sugar in a glass bowl, and then that mixture added to a glass pie plate.
  1. Heat the oven to 375°F. Butter a pie plate. Mix the blueberry filling ingredients in a large bowl.
  2. Dump the filling ingredients into the prepared pie plate. Arrange in an even layer in the pie plate.
A bowl of crumble topping with butter cubes on top of it, and an unbaked blueberry crumble topped with crumble topping.
  1. Combine the flour, oats, sugar, vanilla, and salt in a separate large bowl. Add the butter, and use your fingers or a pastry cutter to mix until well combined.
  2. Sprinkle the crumble topping evenly over the filling. Bake until the filling is bubbling and the topping is golden brown. Cool slightly before serving.

Recipe FAQs

Why is my crumble topping not crunchy?

Just in case our mums are listening, the fruit is the most important part of a crumble so the crispness of the topping shouldn’t even matter. Just kidding—our mums know what’s up. And crumble topping has to be crunchy, crisp, and crumbly.

If the topping isn’t a rich all-over golden brown, it’s possible that you didn’t cook your crumble enough. Reducing the amount of butter in the topping will also result in a dry, crumbly topping. Butter, which encourages both browning and crispness, is the magic ingredient in getting your topping just right, so follow the recipe instructions.

Can I substitute other berries?

Sure thing. We’ve made this recipe with only blueberries, with blueberries and raspberries, and with blueberries, raspberries, and blackberries. They’re all amazing.

You could absolutely substitute other berries or add pitted, sliced cherries. Just be sure to weigh your berries so that your crumble-to-fruit ratio isn’t affected – because you’re gonna want all of that buttery, crispy crumble.

As with most recipes, we recommend you make it the first time exactly as it’s written, then feel free to get creative on your second, third… hundredth times. But, if and when you come up with a tasty new fruit combo, do let us know.

What’s the best way to incorporate the dry ingredients and butter?

In our experience, fingers work way better than a pastry cutter. It’s faster and easier to get the right crumble texture with your hands. If butter under your fingernails grosses you out, use a food-safe glove.

Helpful Tips

  • To make individual servings, divvy the filling and crumble between ramekins and bake until bubbling and golden.
  • If making this with frozen blueberries, thaw and drain the blueberries before baking.
  • Leftover blueberry crumble can be stored at room temperature, loosely covered, for up to 3 days.
A portion of blueberry crumble on a white plate with a scoop of vanilla ice cream on the side.

More great crumble recipes

☞ If you make this recipe, or any dish on LC, consider leaving a review, a star rating, and your best photo in the comments below. I love hearing from you.–David

A blueberry crumble in a glass pie dish with a basked of blueberries and several spoons next to it.

Blueberry Crumble

4.80 / 59 votes
This blueberry crumble, easy to make with blueberries and a buttery oat cookie topping, is simple, easy, and the best blueberry dessert we can imagine. Simple and spectacular. Better make a double batch.
Servings8 servings
Calories287 kcal
Prep Time15 minutes
Cook Time35 minutes
Total Time50 minutes


For the blueberry filling

  • 12 ounces (about 1 pint) fresh blueberries
  • 1/2 cup granulated sugar
  • 2 tablespoons all-purpose flour
  • 1 to 2 tablespoons lemon juice depending on how tart the blueberries
  • 1/4 teaspoon kosher salt

For the crumble

  • 3/4 cup all-purpose flour
  • 1/2 cup quick-cooking oats
  • 1/2 cup light or dark brown sugar
  • 1/2 teaspoon vanilla extract
  • 1/2 teaspoon kosher salt
  • 1 stick (4 oz) unsalted butter cut into cubes and softened just a little, plus more for the pie plate
  • Vanilla ice cream preferably homemade


Prepare the oven and pan

  • Preheat the oven to 375°F (190°C). Adjust the oven rack to the center position. Generously butter a 9-inch pie plate.

Make the blueberry filling

  • Nibble a blueberry or three to determine how sweet or tart it is. Toss the blueberries with the sugar, flour, lemon juice, and salt, adjusting the amount of lemon juice according to the relative sweetness or tartness of the berries. Dump the berries into the pie plate.

Make the crumble topping

  • In a large bowl, stir together the flour, oats, brown sugar, vanilla, and salt. Blend in the butter, using your fingertips or a pastry cutter, and mix until well combined. Crumble the topping over the berries in clumps of varying sizes.
  • Bake the blueberry crumble until the berry filling is bubbling and the crisp oat topping is set and browned in places, 25 to 35 minutes. Let the crumble cool a little (but not a lot) before spooning it onto plates or into dishes and serving it warm with a scoop of ice cream plopped on top or on the side or wherever you choose.


  1. Individual servings–To make individual servings, divvy the filling and crumble between ramekins and bake until bubbling and golden.
  2. Use frozen berries–If making this with frozen blueberries, thaw and drain the blueberries before baking.
  3. Storage–Leftover blueberry crumble can be stored at room temperature, loosely covered, for up to 3 days.
The Farm

Adapted From

The Farm

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Serving: 1 portionCalories: 287 kcalCarbohydrates: 44 gProtein: 2 gFat: 12 gSaturated Fat: 7 gTrans Fat: 1 gCholesterol: 30 mgSodium: 231 mgPotassium: 80 mgFiber: 2 gSugar: 30 gVitamin A: 439 IUVitamin C: 5 mgCalcium: 31 mgIron: 2 mg

Nutrition information is automatically calculated, so should only be used as an approximation.

Tried this recipe?Mention @leitesculinaria or tag #leitesculinaria!
Recipe © 2012 Ian Knauer. Photos © 2012 Angie Zoobkoff. All rights reserved.

Recipe Testers’ Reviews

I have always shied away from blueberry crumbles and cobblers and crunches because they can be so sugary sweet. This one, however, is one of the best fruit desserts–and not just blueberry–I’ve ever made.

The easy-to-prepare crumble topping is absolutely wonderful. It bakes up golden brown and slightly crisp and adds just the right texture to the dish. The fruit portion of the crumble is perfectly balanced–not too sweet and not too tart.

Add a scoop of creamy vanilla ice cream and you have a dessert that looks humble but is so luxurious and satisfying. This recipe is well worth getting butter on your hands for.

Yum! Simple and sooo good. This blueberry crumble is much easier than a pie. The recipe makes a nice-sized dessert that’s great for a weekday meal. Next time I might put a little less flour in the filling, but otherwise I wouldn’t change a thing.

This was one of those perfect-storm recipes with all the right elements coming together to make something amazing. The warm fruit with the crisp, crunchy texture of the topping paired with the creamy cold ice cream was perfect.

The only debate in the family was if the blueberry crumble should be on the side of the ice cream, underneath it, or on top, although maybe this was just an excuse for each of us to have three helpings. The majority felt side-by-side was best to allow you to have total control of the ratio of cold to warm in each bite. The recipe came together very quickly and was so easy. This is a new family favorite!

A 10 in my book. Excellent and loved by my hubby and our houseguest. We all ate the blueberry crumble as quickly as we could. Quick and easy and sure to be a stand-by during blueberry season.

If you want a dessert that’s quick and easy to put together and will delight your guests, make this blueberry crumble and serve it with vanilla ice cream or homemade cinnamon gelato.

The recipe works as-is, no need for any changes. The lemon juice brings a nice brightness to the richness of the dessert. The only trouble is that the recipe says it serves 6 to 8 but it’s more like 4 to 5 as everyone will go back for seconds!

This blueberry crumble takes no time to put together and can be divided, like I did, to make individual tarts. The topping was nice and crunchy.

I didn’t do the ice cream–we just ate it warm from the oven–although I’m going to fold the leftovers into some ice cream, just like the ice cream companies do! Enjoy this little recipe.

This blueberry crumble is a breeze to make and looks wonderful.

If you have sweet-toothed friends and family, then this would be great for them. Although my niece and others loved it, this was too sweet for my tastes. If I made it again for myself, I’d leave out some of the sugar.

This blueberry crumble is a delicious dish. I was going to call it a delicious dessert, but it proved to be a delicious breakfast, too. (Lunch, anyone?) It’s very quick and easy to throw together.

Although I sprinkled the crunchy topping on evenly, I found that it seemed to morph and clump up in spots. The very center of the crumble was still a bit wet, even after the berries were bubbling away and the outside of the crumble was browned. I removed it from the oven anyway. And it in no way stopped this from being a winner.

The finished product is excellent even without ice cream.

Select a Tester

We were moving out of our apartment last weekend and I wanted to do something sweet—literally—for the super and the doormen who work at the apartment building, but I didn’t have a heck of a lot of time. So I threw together this crumble topping and heaped it on top of my usual classic apple pie filling and baked it.

But it never made it to its intended recipients. My 12-year-old nephew and my husband caught one whiff of the dessert cooling on the stovetop and the rest was history.

My guys loved the crumble topping for its own merits as well as the fact that it doesn’t try to compete with the fruit beneath. And I loved the fact that I could toss it together in less than 10 minutes.

It’s now our go-to topping for any sorta fruit that’s in season. Blueberries. Peaches. Pears. Rhubarb. One of these times maybe I’ll be able to sneak a crumble out of the kitchen to the guys at the old building.

P.S. It’s months later, and at least once a week my nephew wakes up begging for this crumble for breakfast. And his grandma (my mother-in-law) just devoured the entire crumble I made for my nephew’s birthday so I had to make another one. And my family, whom I baked the blueberry version for when I was visiting, have been asking for the recipe and already told me I’m not welcome in their homes unless I bring it again. And the neighbors who tried it for the first time last weekend? They just demanded that we bring another one to their backyard barbecue this afternoon—actually, they asked that we bring two. It’s that good.

The blueberry crumble recipe worked very well. I’d like to substitute crushed pretzels for the oats and take out the salt.

About David Leite

David Leite has received three James Beard Awards for his writing as well as for Leite’s Culinaria. His work has appeared in The New York Times, Martha Stewart Living, Saveur, Bon Appétit, Gourmet, Food & Wine, Yankee, Los Angeles Times, Chicago Tribune, The Washington Post, and more.

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Recipe Rating


  1. 5 stars
    I’ve made this for my family and for other people so many times! It’s always a hit and there’s never any left over. It’s a comfort food for me at this point. lol

    1. Wonderful, Ava! We are delighted that you make this comfort food again and again. Thank you for taking the time to comment.

  2. Mine turned out way too salty. I did use salted butter and the Kosher salt in a double batch. What went wrong? Needed unsalted butter?

    1. Jane, the recipe calls for unsalted butter, so that was likely the issue. If using salted butter, then reduce the amount of salt by 1/4 teaspoon per stick of butter. Since you were making a double batch you likely had 1/2 teaspoon more salt than you needed.

  3. 5 stars
    This blueberry crumble is excellent. It takes so little time to prepare. Everyone in my family loved it. It goes great with ice cream.

    1. Thanks, Karen! We’re so pleased that you loved it. Thanks for taking the time to let us know.

  4. 5 stars
    OMGosh. Officially my summer anthem in a bowl. ⭐️⭐️⭐️⭐️⭐️ (But we need to talk about portion control because I just ate about 6 to 8 servings myself.) Seriously–best crumble I ever made.

  5. 5 stars
    Came out really delicious. I had to add a little bit of blueberries and I’m not sure you need so much flour to toss them in!

  6. 5 stars
    This is so easy to make and delicious! Will be making this on a regular basis. I just cut down on the salt.

    1. 5 stars
      I made this before as is and it was absolutely delicious ? ? I’m making one as we speak made one change instead of regular flour I used white wheat flour I’m pretty sure it’ll just as ? ???

  7. 4 stars
    Delicious, although I used only 1/4 the amount of sugar specified for the filling: I found 2 tablespoons of brown sugar was plenty. I also zested 1/2 lemon before squeezing the juice, and then diced the rest of that 1/2 rind finely to add to the filling along with the zest.

    1. Really nice, Stephen. And yes, with fresh fruit, always better to go with what you feel works given the sweetness (or lack thereof) of whatever fruit is in front of you.