Blackberry crumble in a baking dish with ice cream.

Hey there, and welcome back, friends.

You are in for a treat today!

Blackberry crumble is bursting with plump juicy, tart blackberries and a buttery, crunchy streusel topping. It’s the perfect way to use up fresh blackberries.

Blackberry crumble in a bowl.

Blackberry Crumble

I love the sweet-tart taste of fresh blackberries, and what better way to use them this summer than by making an easy blackberry crumble. 

You can whip this dessert together fast for any of your summer gatherings. Everyone will love the blackberry filling with the crunchy streusel topping. If you feel like indulging, add a scoop of vanilla ice cream. 

If you love crumbles, try out my strawberry crumble too!

Blackberry crumble ingredients

Blackberry Crumble Ingredients

You will need these ingredients to make this easy crumble. If you do not have fresh blackberries, you can use frozen blackberries. The filling will taste best with fresh blackberries. The lemon zest is perfect for enhancing the flavor of the blackberries.  

  • fresh blackberries
  • some granulated sugar
  • brown sugar
  • old-fashioned rolled oats
  • almond meal
  • cornstarch
  • all-purpose flour
  • toasted sliced almonds (optional)
  • unsalted butter
  • salt
  • zest of one lemon
  • a dash of almond extract
  • ground cinnamon

Blackberry crumble in a baking dish.

How to Make Blackberry Crumble

Begin by preheating the oven to 375 degrees F. Grease an 8×8-inch baking dish.

In a large bowl, toss the ingredients for the filling until just combined. 

Blackberry crumble ingredients.

Make sure all the cornstarch and flour are well tossed. Set aside while you make the topping.

Mix the rolled oats, flour, almond meal, sugar, salt, cinnamon, and almonds (if using) in a medium bowl. Add in the melted butter and mix until clumps form. 

Blackberry crumble ingredients.

You can use your hands to mix the mixture and clump some together.

Blackberry crumble ingredients.

Spoon the filling into the prepared dish and leave behind any gathered juices. Cover completely with the topping.

Blackberry crumble ingredients.

Place the baking dish onto a baking sheet and bake until the fruit is bubbly in the center and edges and the topping is golden brown. 

Blackberry crumble ingredients.

Let crumble cool on a cooling rack until warm. 

Baked blackberry crumble.

Serve warm with a scoop of ice cream.

How to Prepare Blackberries

If you are using fresh blackberries for a dessert or snack, you need to wash them. I suggest washing them with either some fruit disinfectant or placing the blackberries in a bowl of water and adding a splash of vinegar, lime juice, and a pinch of salt and leaving them for about 15 minutes; then rinse the berries and leave them to dry on a clean towel or paper towel. 

When to Pick Blackberries

If you pick your own blackberries, blackberry season starts mid-June and goes until early October. Make sure to pick ripe blackberries only because they will have the best flavor. Ripe blackberries have a purple-black color and are plump and shiny. Unripe blackberries are green, white, or red and are firm to the touch.  

Blackberry crumble with ice cream.

How to Store Blackberry Crumble

Blackberry crumble can be stored at room temperature for up to 2 days or in the refrigerator for up to 10 days. You can also freeze crumble for up to 3 months in an airtight container. 

What Fruit Can I use in a Crumble?

Any fruit goes well in a crumble. Berries like strawberries, blueberries, and mixed berries all work great in a crumble. In a crumble, you can use fruit like peaches, apples, etc. Any fruit that tastes amazing in a pie will work great in a crumble. 

What Should I Serve with Crumble?

The best food to serve with warm crumble is vanilla ice cream, a dollop of whipped cream, or some custard. All of these go well with the delicious fruit filling and crunchy streusel topping. 

Blackberry crumble in a bowl with ice cream.

What to Make with Blackberries

 If you have an abundance of blackberries, try my other blackberry recipes. Blackberries make everything taste better! These recipes are great over the summer. 

Blackberry Crumble Recipe

Blackberry crumble in a bowl.
Yield: serves 10

Blackberry Crumble

Blackberry crumble is bursting with plump juicy tart blackberries and a buttery crunchy streusel topping. It's the perfect way to use up fresh blackberries.

Prep Time 20 minutes
Cook Time 1 hour 10 minutes
Total Time 20 minutes

Ingredients

  • FOR THE FILLING:
  • • 6 cups fresh blackberries, roughly diced into halves/quarters
  • • 3/4 cup granulated sugar
  • • 1/4 cup cornstarch
  • • ¼ cup all-purpose flour
  • • 1/4 teaspoon salt
  • • zest of one lemon
  • • A dash of almond extract
  • FOR THE CRUMBLE:
  • • 1 cup old fashioned rolled oats
  • • ½ cup all-purpose flour
  • • ¼ cup almond meal
  • • ¾ cup brown sugar, packed
  • • 1/4 teaspoon salt
  • • ½ teaspoon ground cinnamon
  • • ½ cup unsalted butter, melted
  • • ½ cup toasted sliced almonds (optional)

Instructions

  1. Preheat the oven to 375 degrees F. Grease an 8x8 baking dish.
  2. In a large bowl, toss the ingredients for the filling until just combined. Make sure all the cornstarch and flour are well tossed. Set aside while you make the topping.
  3. Mix the rolled oats, flour, almond meal, sugar, salt, cinnamon, and almonds (if using) in a medium bowl. Add in the melted butter and mix until clumps form. You can use your hands to mix the mixture and clump some together.
  4. Spoon the filling into the prepared dish and leave behind any gathered juices. Cover completely with the topping. Place the baking dish onto a baking sheet and bake for about 70 mins, or until the fruit is bubbly in the center and edges and the topping is golden brown. If needed, cover the baking dish with foil for the last 30 minutes of baking.
  5. Let crumble cool on a cooling rack until warm. Serve warm with a scoop of ice cream.

Making this Recipe?

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What do you think of this delicious blackberry crumble recipe? What would you serve with this crumble? Let me know in the comment section below. 

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Happy baking, friends!