This easy plum crumble is warm, fruity, and full of flavor. Juicy plums are baked with lemon and sugar, then topped with a buttery oat crumble that turns golden and crisp. Perfect with a big spoonful of custard on the side. It’s a cozy dessert that’s super simple to make.
Jump to RecipeIngredients Needed:
For the filling:
- butter, for greasing
- 12-15 large ripe plums, stones removed, chopped
- ½ lemon, juice only
- 160g/5½oz caster sugar
For the crumble:
- 175g/6oz plain flour sifted
- 50g/2oz caster sugar
- 50g/2oz dark muscovado sugar
- 100g/3½oz butter, chilled, cut into cubes
- 100g/3½oz rolled porridge oats
- 2 lemons, zest only
- custard, to serve
How To Make Plum Crumble Recipe?
- Preheat the oven: set it to 180C and lightly grease a 30cm/12in square ovenproof dish with butter.
- Add the fruit base: place the chopped plums into the dish, squeeze over the lemon juice, then sprinkle the caster sugar evenly on top.
- Make the crumble topping: in a mixing bowl, rub together the flour, caster sugar, muscovado sugar, and cold butter cubes using your fingertips until it looks like breadcrumbs.
- Add oats and zest: stir in the rolled oats and lemon zest until the crumble mixture is well mixed.
- Assemble the crumble: gently spoon the crumble over the plums without pressing it down.
- Bake the crumble: place the dish in the oven and bake for 40–45 minutes, until the top is golden and the fruit is bubbling around the edges.
- Serve warm: scoop into bowls and enjoy with custard if you like.

Recipe Tips:
- Use ripe and soft plums: this gives the best sweet and juicy filling. If your plums are too firm, let them ripen a bit before using.
- Cut plums into even pieces: chopping them into similar sizes helps them cook evenly and keeps the texture nice.
- Don’t skip the lemon zest in the crumble: it adds a fresh, citrusy flavor that brightens the topping and balances the sweetness.
- Keep the butter cold: cold butter creates that perfect crumbly texture. If it melts too soon, the topping turns cakey instead.
- Don’t press the crumble down: just sprinkle it over the fruit gently. Pressing makes it dense instead of light and crispy.
How To Store Leftovers?
- Refrigerate: First, let the leftover plum crumble cool down to room temperature. Then transfer it to an airtight container or cover the dish tightly. Store it in the fridge for up to 3 days.
- Freeze: Let the crumble cool completely, then wrap it well in foil or cling film, or place it in a freezer-safe container. Freeze for up to 1 month.
Nutrition Facts:
- Calories: 380 kcal
- Total Fat: 15g
- Saturated Fat: 9g
- Cholesterol: 38mg
- Sodium: 60mg
- Potassium: 220mg
- Total Carbohydrate: 58g
- Dietary Fiber: 4g
- Sugars: 34g
- Protein: 4g
Try More Hairy Bikers Recipes:
Hairy Bikers Plum Crumble Recipe
Course: DessertCuisine: BritishDifficulty: Easy6
servings10
minutes45
minutes380
kcalThis easy plum crumble is warm, fruity, and full of flavor. Juicy plums are baked with lemon and sugar, then topped with a buttery oat crumble that turns golden and crisp. Perfect with a big spoonful of custard on the side. It’s a cozy dessert that’s super simple to make.
Ingredients
- For the filling:
butter, for greasing
12-15 large ripe plums, stones removed, chopped
½ lemon, juice only
160g/5½oz caster sugar
- For the crumble:
175g/6oz plain flour sifted
50g/2oz caster sugar
50g/2oz dark muscovado sugar
100g/3½oz butter, chilled, cut into cubes
100g/3½oz rolled porridge oats
2 lemons, zest only
custard, to serve
Directions
- Preheat the oven: set it to 180C and lightly grease a 30cm/12in square ovenproof dish with butter.
- Add the fruit base: place the chopped plums into the dish, squeeze over the lemon juice, then sprinkle the caster sugar evenly on top.
- Make the crumble topping: in a mixing bowl, rub together the flour, caster sugar, muscovado sugar, and cold butter cubes using your fingertips until it looks like breadcrumbs.
- Add oats and zest: stir in the rolled oats and lemon zest until the crumble mixture is well mixed.
- Assemble the crumble: gently spoon the crumble over the plums without pressing it down.
- Bake the crumble: place the dish in the oven and bake for 40–45 minutes, until the top is golden and the fruit is bubbling around the edges.
- Serve warm: scoop into bowls and enjoy with custard if you like.
Notes
- Use ripe and soft plums: this gives the best sweet and juicy filling. If your plums are too firm, let them ripen a bit before using.
- Cut plums into even pieces: chopping them into similar sizes helps them cook evenly and keeps the texture nice.
- Don’t skip the lemon zest in the crumble: it adds a fresh, citrusy flavor that brightens the topping and balances the sweetness.
- Keep the butter cold: cold butter creates that perfect crumbly texture. If it melts too soon, the topping turns cakey instead.
- Don’t press the crumble down: just sprinkle it over the fruit gently. Pressing makes it dense instead of light and crispy.