This easy blueberry crumble is a cozy dessert packed with juicy blueberries and topped with a buttery oat crumble that bakes to golden perfection. It comes together quickly with simple pantry ingredients, making it perfect for weeknight desserts, summer gatherings, or whenever you crave a warm fruit treat. Serve it warm with vanilla ice cream or enjoy it on its own for a comforting homemade dessert.
Why You’ll Love This Recipe
Easy to prepare with minimal prep time
Uses simple ingredients you may already have at home
The buttery oat topping becomes crisp and golden
Fresh blueberries create a sweet and juicy filling
Perfect for family dinners, holidays, or casual desserts
Can be made with fresh or frozen blueberries
Delicious served warm or chilled
Ingredients
(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)
For the blueberry filling:
6 cups fresh blueberries
1/3 cup granulated sugar
2 tablespoons all-purpose flour
1 tablespoon fresh lemon juice
1/4 teaspoon salt
For the crumble topping:
1 cup all-purpose flour
3/4 cup rolled oats
1/2 cup brown sugar
1/4 cup granulated sugar
1/4 teaspoon salt
1/2 teaspoon ground cinnamon
1/2 cup unsalted butter, melted
Optional for serving:
Vanilla ice cream
Whipped cream
Directions
Preheat your oven to 375°F (190°C). Lightly grease a 9-inch baking dish or pie dish.
In a large mixing bowl, combine the blueberries, granulated sugar, flour, lemon juice, and salt. Toss gently until the blueberries are evenly coated.
Transfer the blueberry mixture into the prepared baking dish and spread it into an even layer.
In another bowl, prepare the crumble topping. Mix together the flour, rolled oats, brown sugar, granulated sugar, salt, and cinnamon.
Pour the melted butter into the dry topping mixture. Stir with a fork until crumbly clusters form.
Sprinkle the crumble topping evenly over the blueberries, covering most of the fruit.
Bake for 30 to 35 minutes, or until the topping is golden brown and the blueberry filling is bubbling around the edges.
Remove from the oven and allow the crumble to cool for at least 10 minutes before serving.
Serve warm with vanilla ice cream or whipped cream if desired.
Servings and timing
Servings: 8 servings
Prep Time: 10 minutes
Cook Time: 30–35 minutes
Total Time: 40–45 minutes
Variations
Add raspberries or blackberries for a mixed berry crumble.
Use frozen blueberries if fresh berries are unavailable. Thaw and drain them first for best texture.
Add chopped walnuts or pecans to the topping for extra crunch.
Replace cinnamon with nutmeg for a warmer flavor.
Make it gluten-free by using gluten-free flour and certified gluten-free oats.
Add a little lemon zest for brighter citrus flavor.
Storage/Reheating
Store leftover blueberry crumble in an airtight container in the refrigerator for up to 4 days.
To reheat, place portions in the microwave for 30 to 45 seconds or warm the entire dish in a 350°F oven for about 10 minutes until heated through.
For best texture, reheating in the oven helps restore the crisp topping.
You can also freeze the crumble for up to 2 months. Thaw overnight in the refrigerator before reheating.
FAQs
Can I use frozen blueberries?
Yes, frozen blueberries work well. Thaw and drain excess liquid before using to prevent the filling from becoming too watery.
What is the difference between a crumble and a crisp?
A crumble usually has a streusel-style topping made with flour, sugar, and butter, while a crisp often includes oats for extra crunch.
How do I know when the crumble is done baking?
The topping should be golden brown and the blueberry filling should bubble around the edges.
Can I make this recipe ahead of time?
Yes, you can assemble the crumble a few hours ahead and refrigerate it until ready to bake.
Why is my crumble topping not crunchy?
Too much butter can make the topping soft. Make sure the topping mixture stays crumbly before baking.
Can I reduce the sugar?
Yes, you can slightly reduce the sugar if your blueberries are naturally sweet.
What should I serve with blueberry crumble?
Vanilla ice cream, whipped cream, or even plain yogurt pair wonderfully with this dessert.
Can I use other fruits?
Absolutely. Strawberries, peaches, blackberries, and apples all work beautifully in crumble recipes.
Do I need to refrigerate leftovers?
Yes, because of the fruit filling, leftovers should be stored in the refrigerator.
Can I make this dairy-free?
Yes, substitute the butter with a plant-based butter alternative.
Conclusion
This easy blueberry crumble is a simple yet impressive dessert filled with sweet blueberries and topped with a buttery oat crumble that everyone loves. With minimal preparation and classic homemade flavor, it’s a recipe you can enjoy year-round. Whether served warm with ice cream or enjoyed straight from the fridge, this comforting dessert is always a delicious choice.
A warm and comforting Easy Blueberry Crumble made with juicy baked blueberries and topped with a buttery oat crumble. This simple dessert is golden, crisp, and perfect served with ice cream or whipped cream.
Ingredients
6 cups fresh blueberries
1/3 cup granulated sugar
2 tablespoons all-purpose flour
1 tablespoon fresh lemon juice
1/4 teaspoon salt
1 cup all-purpose flour (topping)
3/4 cup rolled oats
1/2 cup brown sugar
1/4 cup granulated sugar
1/4 teaspoon salt
1/2 teaspoon ground cinnamon
1/2 cup unsalted butter, melted
Vanilla ice cream (optional)
Whipped cream (optional)
Instructions
Preheat oven to 375°F (190°C) and grease a 9-inch baking dish.
Toss blueberries with sugar, flour, lemon juice, and salt.
Spread blueberry mixture evenly in baking dish.
Mix flour, oats, sugars, salt, and cinnamon in a bowl.
Stir in melted butter until crumbly.
Sprinkle crumble evenly over blueberries.
Bake for 30–35 minutes until golden and bubbling.
Cool for 10 minutes before serving.
Notes
Frozen blueberries can be used if thawed and drained.
