This baked blackberry crumble layers juicy berries under a golden, buttery topping that bakes up crisp at the edges and tender in the middle.
The fruit filling takes only a few minutes to mix, and the crumble topping comes together with just flour, sugar, cinnamon, and butter. Serve it warm with ice cream for a simple dessert that feels special.
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Why This Baked Blackberry Crumble Recipe Works
Blackberries turn jammy in the oven while still holding some tartness, which balances the sweet topping. A spoonful of flour in the filling thickens the juices so the fruit bakes into a spoonable layer.
Softened butter worked into the dry ingredients creates coarse crumbs that bake into crisp clusters. The cinnamon adds warmth without overpowering the berries.
A little lemon juice brightens the fruit, and the dessert works with fresh or frozen berries, so you can make it any time of year.
Ingredients for Baked Blackberry Crumble
- 24 ounces fresh or frozen blackberries
- 2 tablespoons granulated sugar
- 1 tablespoon all purpose flour
- 1/4 teaspoon ground cinnamon
- 1 pinch kosher salt
- 1 teaspoon fresh lemon juice
- 1 cup all purpose flour, for the topping
- 1 cup granulated sugar, for the topping
- 1/2 teaspoon ground cinnamon, for the topping
- 1/4 teaspoon kosher salt, for the topping
- 1/2 cup unsalted butter, softened, for the topping
Blackberries. Fresh berries should be plump and dark. Frozen berries work well, and you can bake them straight from the freezer without thawing, adding about 5 minutes to the bake time.
Flour in the filling. One tablespoon thickens the berry juices so the filling is not runny.
Butter. Softened butter should give slightly when pressed. Cold butter makes a dry topping and melted butter makes a greasy one.
Cinnamon. A small amount in both layers gives the dessert a warm, bakery style aroma.
Lemon juice. It sharpens the berry flavor and keeps the filling from tasting flat.
How to Make Baked Blackberry Crumble
1. Heat the oven Heat the oven to 350 degrees F and spray a 3 quart baking dish (9×13 inch) with nonstick cooking spray.
2. Coat the berries Toss the blackberries with 2 tablespoons sugar, 1 tablespoon flour, 1/4 teaspoon cinnamon, a pinch of kosher salt, and the lemon juice until evenly coated.
3. Fill the dish Spread the berries in an even layer in the prepared dish.
4. Mix the topping Whisk 1 cup flour, 1 cup sugar, 1/2 teaspoon cinnamon, and 1/4 teaspoon kosher salt in a medium bowl.
5. Cut in the butter Work the softened butter into the dry mixture with a fork or your fingertips until it forms coarse, pea sized crumbs.
6. Add the crumbs Sprinkle the topping evenly over the fruit, covering the berries from edge to edge.
7. Bake until bubbly Bake for 25 to 30 minutes, until the topping is golden brown and the juices bubble around the edges.
8. Rest and serve Let the dessert rest for 10 minutes so the filling thickens, then spoon it into bowls.
How to Serve Baked Blackberry Crumble
Spoon the warm dessert into bowls and top with vanilla ice cream or whipped cream. For a fruit dessert table, pair it with sheet pan apple crisp, Granny Smith apple crisp, and fresh peach cobbler, and add a small bowl of baked cinnamon rice pudding.
How to Store and Reheat Baked Blackberry Crumble
Cool the dessert completely, cover it tightly, and refrigerate for up to 3 days. Reheat individual portions in a hot oven at 350 degrees F for 10 to 12 minutes to bring back the crisp topping. The microwave works in a pinch, though the topping will soften. For longer storage, freeze the baked dessert for up to 1 month.
Tips and Variations for Baked Blackberry Crumble
Measure the flour. Spoon and level the flour so the topping stays tender rather than dense.
Do not skip the rest time. Ten minutes of resting lets the bubbling juices settle and thicken.
Add oats. Replace 1/2 cup of the flour in the topping with old fashioned oats for a chewier crumb.
Mix the berries. Swap in half raspberries or blueberries for a mixed berry version.
Add nuts. Stir 1/2 cup chopped pecans into the topping for crunch.
Boost the flavor. Add 1/2 teaspoon vanilla extract to the berries for a rounder taste.
Use a baking sheet. Set the dish on a rimmed baking sheet to catch any juices that bubble over.
Store fruit desserts safely. Chill leftovers within 2 hours, and review the Purdue Extension guide to storing leftovers for general advice on refrigerating cooked foods.
Frequently Asked Questions About Baked Blackberry Crumble
Can I make baked blackberry crumble with frozen berries?
Yes. Use the berries straight from the freezer without thawing and add about 5 minutes to the baking time, until the filling bubbles.
How do I get a crispy topping on baked blackberry crumble?
Use softened butter, leave some larger crumbs, and bake until deep golden. Reheating in the oven restores the crunch.
Can I prepare baked blackberry crumble in advance?
Mix the fruit and topping separately, store them covered in the refrigerator for up to 1 day, then assemble and bake.
Why is my filling runny?
Berries release a lot of liquid. Measure the flour, bake until the juices bubble thickly, and let the dessert rest before serving.
What is the difference between a crumble and a crisp?
A crumble has a flour, sugar, and butter topping, while a crisp usually includes oats. Both are baked fruit desserts.
Baked Blackberry Crumble with Butter Topping
Equipment
- 9×13 inch baking dish
- Mixing bowls
- fork or pastry cutter
Ingredients
Main Ingredients
- 24 oz fresh or frozen blackberries
- 2 tbsp granulated sugar
- 1 tbsp all purpose flour
- ¼ tsp ground cinnamon
- 1 pinch kosher salt
- 1 tsp fresh lemon juice
- 1 cup all purpose flour for the topping
- 1 cup granulated sugar for the topping
- ½ tsp ground cinnamon for the topping
- ¼ tsp kosher salt for the topping
- ½ cup unsalted butter softened, for the topping
Instructions
Cooking
- Prep the dish. Heat the oven to 350 degrees F and spray a 9×13 inch baking dish.
- Toss the filling. Combine the berries with sugar, flour, cinnamon, salt, and lemon juice, then spread them in the dish.
- Make the crumble. Whisk the topping flour, sugar, cinnamon, and salt, then rub in the butter until coarse crumbs form.
- Top and bake. Scatter the crumbs over the berries and bake for 25 to 30 minutes until golden and bubbling.
- Rest. Cool for 10 minutes before serving so the juices thicken.
