Have you ever tried making fruit crumble? This easy rhubarb apple crumble recipe is the ultimate comfort food. We’ve been making and enjoying fruit crumbles for many years. Here are tips on how to make the best crumble and detailed instructions.
What is a Crumble?
Crumble is a traditional British dessert, that is usually made from stewed fruit. The crumble is the mix of flour, butter and sugar that tops the stewed fruit.
In the 2nd World War, many ingredients were rationed. Fruit crumble was a good way of making each ingredient go a lot further. After the war, crumbles continued to be popular for their versatility.
A fruit crumble is slightly different from a fruit crisp, which usually includes oats. This is an oat free crumble recipe. If you like, you can substitute the flour for oats. For a gluten free fruit crumble, you can substitute regular flour for almond flour, gluten free flour or gluten free oats.

Rhubarb Apple Crumble Ingredients
Traditional fruit crumble ingredients include fresh fruit, flour, unsalted butter and sugar. If fresh fruit is not in season, you can also use frozen fruit.
For this easy rhubarb and apple crumble recipe, we’ve used Granny Smith apples. They have a pleasing tartness that offsets the sweet crumble mixture.
If you have quite a sweet tooth, try using sweet red apples. We’ve added a few extra ingredients to make this apple and rhubarb crumble truly special.
These are chopped walnuts and some vanilla extract. The walnuts give a nice crunch to the crumble, while the vanilla extract has a lovely rich taste. You can use vanilla paste or a whole vanilla pod if you prefer.

Crumble Fillings
We love the mix of tart rhubarb and apple for this crumble recipe. However, there are quite a few alternative fillings that you can use instead.
If you choose a fruit such as peaches, it’s a good idea to add lemon juice for tartness. Add a bit of sugar to offset acidic fruit such as blackberries and gooseberries.
- Blackberry
- Blueberry
- Cherry
- Gooseberry
- Peach
- Pear
- Raspberry
- Strawberry

How to Make Rhubarb Apple Crumble
The full rhubarb apple crumble recipe is below, but here is a quick summary. First, you need to peel and core the apples and cut them into 3 cm chunks. Then chop the rhubarb into 3 cm chunks.

Sprinkle over half the sugar and roast in a preheated oven for 10 minutes.

Next, prepare the crumble mixture by rubbing together the flour and butter together with your fingertips. Add the chopped walnuts and the rest of the sugar. Sprinkle the crumble mixture over the stewed fruit and bake for 35-40 minutes.

Storing Fruit Crumble
After covering with aluminium foil or placing in an airtight container, you can store any leftovers in the refrigerator for 2 to 3 days. Alternatively, freeze for up to 3 months. Allow to thaw thoroughly before serving in the refrigerator overnight, then simply reheat in a low oven for around 20 minutes.

Serving Fruit Crumble
You can serve this rhubarb apple crumble with thick cream, vanilla ice cream or whipped cream. Fruit crumble always tastes better warm, but not too hot.
If you prefer to serve individual rhubarb and apple crumbles, you can make them in small porcelain ramequins. In terms of presentation, you can chop a few slices of apple to top the crumble.
Here is the full rhubarb apple crumble recipe, with step by step instructions.
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Easy Rhubarb Apple Crumble Recipe
Easy Rhubarb Apple Crumble Recipe
Ingredients
- 400 g rhubarb, cut into 3 cm slices
- 3 small Granny Smith or Bramley apples, peeled, cored and cut into 3 cm chunks
- 100 g light brown sugar
- 1/2 cup/100 g light brown sugar
- 40 g walnuts, finely chopped
- 1 teaspoon vanilla extract
- Cream or ice cream to serve
Instructions
- Preheat the oven to 350F/180C/ gas 4. Place the chopped apples and rhubarb in an ovenproof dish. Scatter over half of the sugar. Pour the vanilla extract over and roast in the oven for 10 minutes.
- Mix the flour and butter together in a large mixing bowl, by rubbing together between your fingertips. Combine until you have a breadcrumb texture.
- Add the remaining sugar and chopped walnuts and mix thoroughly. Sprinkle this mixture over the fruit. Cook for 35-40 minutes, until the top is golden brown.
- Serve warm with cream or vanilla ice cream.
Notes
If you like, add a teaspoon of ground cinnamon or ginger to the flour.
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