Ridiculously Easy Blueberry Crumble

This easy blueberry crumble with perfectly cooked blueberries topped with a buttery oat crumble is high on our list of favorites. There’s no fancy equipment needed and you only need about 10 minutes of prep time! Jump to the Blueberry Crumble Recipe or watch our quick recipe video showing you how we make it.

Watch us make the recipe

Our secret for the best blueberry crumble

The real secret to our blueberry crumble is in the topping. We use melted butter (or melted coconut oil for a vegan crumble). Most often when looking at the method for making blueberry crumble, you are asked to process or smoosh cold butter into the other crumble ingredients.

Adding crumble topping to blueberries.

In our recipe, we quicken the process and simply stirring in melted butter. Not only is this quicker and less messy, it makes for a much better crumble topping.

By using melted butter, all of the flour and oats are coated in buttery goodness, which helps them stay put on top of the blueberries. After baking, the topping is made up of golden brown crumbles with just enough crunch to stand up to the dreamy blueberry filling below.

Scooping out a serving of baked blueberry crumble.

We use this same method when making these easy baked apples and our favorite apple crisp recipe.

Note: Choosing whether to call this a blueberry crumble or blueberry crisp was tricky. Both desserts are similar and from what I found online, crumbles might not always include oats (although my Mom always called this type of dessert a crumble). This topping looks like crumbles on top of the berries and crumbles when you dig in after it has been baked, which is why we went with crumble ?

Keep the filling simple

We keep the filling simple and only add a touch of flour to help thicken the blueberry juices, a little sugar, a pinch of salt, and when we have it on hand, a squeeze of fresh lemon juice. When I don’t have lemon in the kitchen, I simply add a tablespoon of water, which helps moisten the flour before baking in the oven.

Blueberry Crumble with a topping made from flour, butter and oats.


As I mentioned above, I typically keep this dessert simple, but there are some really delicious variations you can make.

  • Add a variety of berries to make a berry crumble.
  • Substitute blueberries for other berry varieties. Since they may have a different sugar content, it’s a good idea to taste the berries you plan to use before adding sugar to the filling. Gooseberries, for example, are much more tart and might need a bit more sugar to balance things out.
  • Add other fruits like sliced peaches, apples or pears.
  • Make a spiced crumble topping with 1/2 teaspoon of cinnamon and a pinch of nutmeg.
  • Add nuts to the crumble topping. I especially love almonds and blueberries together.

Make ahead tips

Blueberry crumble will last in the refrigerator 3 to 4 days and can be frozen up to a month. I prefer to freeze the crumble before baking and then cover very well so it is airtight. When I’m ready to bake, I simple bake from frozen until the filling is bubbling and the topping is golden brown (40 to 60 minutes). You can also freeze the crumble in small freezer/oven-safe ramekins and then bake those (these will take slightly less time to bake).

Scooping out blueberry crumble from a serving dish.

More easy desserts

Ridiculously Easy Blueberry Crumble

  • PREP
  • COOK

This easy blueberry crumble with perfectly cooked blueberries topped with a buttery oat crumble is high on our list of favorites. There’s no fancy equipment needed and you only need about 10 minutes of prep time. Before adding sugar to the filling, taste your berries. If they are already sweet, you might want to hold back on how much sugar you add.

Makes 8 servings

You Will Need

For the Filling

24 ounces (about 2 pints) fresh blueberries

2 to 4 tablespoons sugar, see notes

2 tablespoons all-purpose flour

1 tablespoon fresh lemon juice or use water

Pinch fine sea salt

For the Crumble Topping

3/4 cup (100 grams) all-purpose flour

3/4 cup (65 grams) old-fashioned rolled oats

1/2 cup (100 grams) sugar, try combining 1/4 cup brown sugar + 1/4 cup granulated sugar

1/2 cup (115 grams) butter, melted (1 stick) or substitute 1/2 cup melted coconut oil

1/8 teaspoon fine sea salt


  • Make Filling
  • Heat oven to 375 degrees Fahrenheit.

    Add blueberries, lemon juice, 2 tablespoons of flour, sugar, and pinch of salt to a 9-inch pie dish (or use a 2-quart baking dish). Toss well until combined.

    • Make Crumble Topping
    • Combine flour, oats, sugar, and the salt in a medium bowl. Add the melted butter then stir until all the flour has been moistened by the butter and topping is crumbly.

      Sprinkle over blueberry filling. (We like to use our hands to do this. As we sprinkle, we press the crumbles together to create larger clumps of topping.)

      • Bake Crumble
      • Bake 25 to 35 minutes until juices are thickened and the topping has turned light golden brown. Cool 10 minutes, and then serve.

Adam and Joanne's Tips

  • Gluten-free blueberry crumble: Use you favorite store-bought gluten-free flour blend instead of the all-purpose flour called for above.
  • Use whole wheat flour: Replace the all-purpose flour with an equal amount of whole wheat flour or use white whole wheat flour.
  • Reduce the sugar: The sugar needed depends on how tart your blueberries are. We love the crumble to be slightly tart, so reducing the sugar mixed with the blueberries as well as in the topping is an option. (I usually add the smaller amounts suggested above.)
  • Using frozen blueberries: Thaw frozen blueberries and drain them of excess liquid before using in this recipe.
  • Nutrition Facts: The nutrition facts provided below are estimates. We have used the USDA database to calculate approximate values. We assumed 2 tablespoons of sugar for the filling.

If you make this recipe, snap a photo and hashtag it #inspiredtaste — We love to see your creations on Instagram and Facebook! Find us: @inspiredtaste

Nutrition Per Serving: Serving Size 1/8 of the dish / Calories 289 / Total Fat 11.9g / Saturated Fat 7.3g / Cholesterol 30.4mg / Sodium 75.5g / Carbohydrate 43.6g / Dietary Fiber 3.2g / Total Sugars 24.2g / Protein 3.1g
AUTHOR: Adam and Joanne Gallagher

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27 comments… Leave a Comment
  • Carol April 24, 2021, 7:18 am

    This was delicious. I used defrosted blueberries, which I drained as directed. The blueberries already tasted sweet with a bit of tartness, so I just put some of the blueberry juice back in instead of lemon juice and omitted the sugar altogether from the blueberry filling. I also used fine whole meal baking flour throughout as suggested in the optional section, and the crumble was lovely.

  • SherA March 21, 2021, 5:28 pm

    I didn’t have any fresh blueberries, but I had a tin of blueberry pie filling, so I added some lemon juice to it, made the crumble with less sugar and added lemon rind to the crumble. Scrumptious. With a dollop of vanilla ice cream, divine.

  • Meagan February 10, 2021, 12:34 am

    Delicious and easy to make!

  • Kim T November 12, 2020, 9:36 pm

    Thank you for sharing this delightful and easy recipe. I came across this recipe while searching online for an easy dessert to prepare with Blueberries; My husband’s clean bowl and big smile said it all. I followed the recipe to the letter and used only the 2 tbsps of sugar in the filling. I will definitely be making more of your recipes and I have already shared it with other family members.All the best to you and your family.

  • Jojo November 8, 2020, 8:01 pm

    This has been my go-to dessert for the last 5 months. Soo easy to make and 100% guaranteed to satisfy!

  • Bill and Linda Hicks October 10, 2020, 9:53 am

    Hello,This desert is amazing, so so easy to do. Fix it for friends and they loved it. Thanks for sharing. Linda

  • Maria October 5, 2020, 3:07 pm

    I have made it! Its delicious!! Just perfect quantity and taste. Next i think i will add a bit less sugar to the crumble because my husband thought it was to sweet, but for me was just fine. I am not good at cooking and it made me proud to be able to pull this off. Thank u guys!

  • Amy W. Hartsough August 18, 2020, 7:22 pm

    I adore this recipe!! I used less sugar, and it was divine! I also made your pan-fried pork chops, and they were perfect! Melt in your mouth delicious, and I added an onion to the sauce. Thank you so much for all your recipes! Next up: homemade hummus. ?

  • Gail Brannigan August 10, 2020, 1:14 pm

    This is a good recipe but you need to double the crumble. That is the best part

  • Derek August 9, 2020, 10:49 pm

    My wife recently picked a bunch of alaskan blueberries and I’ve made this recipe three times in about a week. People can’t get enough of it. My wife’s family aren’t dessert people and they absolutely destroyed this pie. Used the lesser amounts of sugar(white/brown), cinnamon in the topping, and lemon or lime juice in the filling. Going to try some shredded coconut in the topping when I inevitably make this again.


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