Apple and Blueberry Crumble Recipe with Crispy Oat Topping

A sweet and fruity apple and blueberry crumble topped with an easy 5-minute oat crumble. Serve it warm with ice cream, whipped cream, or custard for a comforting, family-friendly dessert.

Apple and blueberry crumble in a pie dish.

What makes this recipe so simple is that the crumble topping doesn’t need rubbing-in. Melted butter is poured over the flour, oats and sugar, then mixed to form golden, crunchy clumps that pair perfectly with tart apples and juicy blueberries.

✔️ Why try this recipe?

  1. The sweet-tart pairing of apples and blueberries with a crunchy oat topping is irresistible.
  2. Crumble is quick and easy—no pastry to roll or complicated assembly.
  3. It freezes and reheats well, making it ideal for batch cooking or make-ahead desserts.

‘It was divine! I found many crumbles go soggy, but this one stayed crisp after reheating. A hit at work — one colleague called it the best crumble she’s ever had.’ ⭐⭐⭐⭐⭐

– Stef

‘Gosh, this is such a nice crumble. Lovely flavour combo.’ ⭐⭐⭐⭐⭐

– Natalie

🥘 Ingredients

Ingredients needed to make the apple and blueberry crumble.

Blueberries – 300 g fresh or frozen.

Apples – about 750 g tart eating apples (Granny Smith) peeled, cored and sliced.

Caster sugar – 1 tablespoon to sweeten the fruit.

Cinnamon – 1 teaspoon for warmth and aroma.

Flour – 1 tablespoon to thicken the filling plus 125 g plain flour for the topping.

Oats – 125 g rolled oats for texture and a nutty flavour in the crumble.

Brown sugar – 150 g light brown sugar adds caramel notes; granulated or caster sugar can be used instead.

Butter – 125 g unsalted, melted, poured into the dry topping to form clumps.

🔪 How to make apple blueberry crumble

The full recipe card with quantities and timing is below.

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One: Peel and thinly slice the apples and place them in a pie dish.
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Two: Add the blueberries, sugar, cinnamon and 1 tbsp flour; toss to combine.
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Three: In a bowl combine the flour, oats and brown sugar, then pour over the melted butter and stir until crumbly clumps form.
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Four: Scatter the topping over the fruit and bake at 180 °C (160 °C fan / 350 °F / Gas 4) for 45–50 minutes until bubbling and golden.

Top tips

  • Let the melted butter cool slightly before mixing with the dry ingredients so it doesn’t make the sugar clump.
  • Make the crumble topping ahead and freeze it; it’s handy to have ready when you want a quick dessert.
  • Choose old-fashioned rolled oats for a crisper texture; instant oats can go soft.
  • Rest the crumble for 10–15 minutes after baking so the filling sets and is easier to serve.

🍴 Serving suggestions

Serve warm with vanilla ice cream, clotted cream, custard, or a spoonful of yogurt or crème fraîche. Leftovers are lovely for breakfast with natural yogurt.

📖 Variations

  • Swap or mix berries: raspberries, blackberries or strawberries work well.
  • Use frozen blueberries so you can make this dessert year-round.
  • Add pears, peaches or plums with the apples for extra depth.
  • Stir chopped walnuts, almonds or pecans into the topping for a crunchy nutty note.
  • Grate a little nutmeg or add mixed spice to the crumble for warming flavour.
  • Split into 6–8 individual ramekins and bake for personal portions.
Apple and blueberry crumble in a bowl served with yogurt.

🥡 Storage

Make ahead: Assemble up to 2 days in advance—layer the fruit, add the topping, cover and refrigerate.

Store: Keep the baked crumble in the fridge for up to 2 days; reheat in the microwave or oven.

Freeze: Freeze for up to 3 months. Bake from frozen—just add a few extra minutes to the cooking time.

❓ FAQs

Which apples are best for crumble?

Tart eating apples like Granny Smith or cooking apples such as Bramley work best, as their acidity balances the sweet topping.

Why isn’t my crumble crispy?

A dry, floury topping usually means there wasn’t enough butter. Add melted butter a tablespoon at a time until the mixture forms clumps.

Is a crumble the same as a crisp?

Terminology varies by region: in the UK it’s often called a crumble; in the US the term crisp is common. Both are baked fruit desserts with a crunchy topping; oats are more typical in a crisp but are frequently used in crumbles too.

😋 Related recipes

More fruity desserts to try:

  • Plum and Apple Crumble
  • Blackberry Crumble
  • Strawberry Crumble
  • Rhubarb and Ginger Crumble
  • Stewed Apples
  • Apple and Blackberry Turnovers
  • Chocolate Orange Pots
  • Strawberry Cobbler

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Recipe

Easy Apple and Blueberry Crumble

A simple apple and blueberry crumble made with tart apples and sweet blueberries, baked under a crisp oat topping. Ready in under an hour and perfect with ice cream or custard.

Details

Course: Dessert | Cuisine: British

Prep time: 10 minutes | Cook time: 45 minutes | Total time: 55 minutes | Serves: 6

Calories (approx): 477 kcal per serving

Equipment

  • Kitchen scales
  • Measuring spoons
  • Chopping board and knife
  • Pie dish (about 2 litres) or ramekins

Ingredients

  • 750 g Granny Smith apples, peeled, cored and sliced
  • 300 g blueberries, fresh or frozen
  • 1 tbsp caster sugar
  • 1 tsp cinnamon
  • 1 tbsp plain flour (for the filling)

For the crumble topping

  • 125 g plain flour
  • 125 g rolled oats
  • 150 g light brown sugar
  • 125 g unsalted butter, melted

Instructions

  1. Preheat the oven to 180 °C (160 °C fan / 350 °F / Gas 4).
  2. Peel, core and slice the apples and place them in a large pie dish (about 2 litres capacity).
  3. Add the blueberries, caster sugar, cinnamon and 1 tablespoon plain flour. Toss gently to combine.
  4. In a mixing bowl combine the 125 g plain flour, 125 g oats and 150 g light brown sugar. Pour over the melted butter and stir until a crumbly topping forms.
  5. Spoon the crumble topping evenly over the fruit and bake for 45–50 minutes, until the filling is bubbling and the topping is golden.
  6. Allow the crumble to rest for 10–15 minutes before serving.

Notes

Variations: Use different berries, add chopped nuts to the topping, or mix other soft fruits with the apples. Bake in individual ramekins for single portions.

Storage: Assemble up to 2 days ahead in the fridge. Store baked crumble in the fridge for up to 2 days. Freeze for up to 3 months and bake from frozen, adding a few extra minutes to the cook time.

Nutrition (Approximate)

Calories: 477 kcal | Carbohydrates: 88 g | Protein: 10 g | Fat: 12 g | Sugar: 44 g | Fiber: 7 g