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Strawberry Rhubarb Crumble Traybake: Moist Sponge, Crisp Topping
🛒 Ingredients
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100 g plain flour
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75 g sugar
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75 g margarine
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1/2 sachet vanilla sugar
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500 g strawberries
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400 g rhubarb
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125 g margarine
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125 g sugar
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1 pinch of salt
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1/2 sachet vanilla sugar
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2 eggs
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120 g plain flour
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1 tbsp cornflour
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1 tsp baking powder
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50 g flaked almonds
This recipe is also available in German.
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📌 Overview
Strawberry rhubarb crumble traybake is a moist spring and summer bake with a tender sponge base, sweet strawberries, tart rhubarb, flaked almonds and a crisp crumble topping. It is ideal when you want an easy cake for afternoon tea, a picnic, a small gathering or a simple seasonal dessert. The key flavour balance comes from the sharpness of rhubarb, the sweetness of strawberries and the buttery crunch of the crumble.
To stop the traybake from becoming soggy, the fruit should not be chopped too small and should be spread evenly over the sponge. Cornflour in the batter helps absorb some of the fruit juice, while chilled crumble keeps its shape better and bakes more crisply. The cake is baked in a half-size tray at 200°C conventional for about 35 to 40 minutes, until the crumble is golden and the sponge is cooked through in the centre.
You may also find it useful to look at recipes Juicy Strawberry Traybake Recipe with Cream Cheese Topping for Summer, Peach Melba Traybake with Raspberries and Vanilla Cream, and Juicy Plum Traybake with Buttery Sponge, in addition to this one.
👨🍳 How to make Strawberry Rhubarb Crumble Traybake
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Heat the oven to 200°C conventional and lightly grease a half-size baking tray, roughly 28 x 23 cm. Line it with baking parchment as well if you want to lift the cake out more easily.
- 2
To make the crumble topping, mix 100 g plain flour, 75 g sugar, 1/2 sachet vanilla sugar and 75 g cold margarine. Rub together with your fingertips or knead briefly until you have coarse crumbs. Do not overwork the mixture, or the crumble will become dense rather than crisp.
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Chill the crumble topping until needed. Cold crumble keeps its shape better in the oven and gives the strawberry rhubarb traybake a crisper top.
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Wash the strawberries, pat them dry, hull them and halve larger berries. Very large strawberries can be quartered, but do not cut them too small because they will release more juice.
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Wash and trim the rhubarb. Peel away any tough strings from thicker stalks, then cut the rhubarb into pieces about 2 cm long. If the stalks are very thick, halve them lengthways first.
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For the sponge, beat 125 g margarine with 125 g sugar, a pinch of salt and 1/2 sachet vanilla sugar until pale, creamy and softened.
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Beat in the eggs one at a time. Add the second egg only once the first is fully incorporated, as this helps the batter stay smooth.
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Mix 120 g plain flour with the cornflour and baking powder. Fold this dry mixture briefly into the batter until no visible flour pockets remain. Avoid overmixing, which can make the sponge firmer.
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Spread the batter evenly over the prepared tray and smooth the top with a damp spatula. The layer will look fairly shallow but will rise during baking.
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Arrange the strawberries and rhubarb evenly over the batter. Do not pile the fruit too heavily in one area, as the sponge needs space to bake through.
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Scatter the flaked almonds over the fruit. They add a light nutty flavour and extra texture alongside the crumble topping.
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Take the chilled crumble from the fridge and sprinkle it generously over the fruit. A mixture of larger and smaller crumbs gives the best texture.
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Bake on the middle shelf for 35 to 40 minutes, until the crumble is golden and the sponge is cooked through. If the crumble browns too quickly, cover the tray loosely with baking parchment.
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Test the cake with a skewer in an area with less fruit. There should be no raw batter clinging to it. Fruit juice on the skewer is normal.
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Leave the strawberry rhubarb crumble traybake to cool in the tin on a wire rack until at least lukewarm before slicing. If cut while very hot, the pieces will be softer and may break.
🧠 Why It Works
This strawberry rhubarb crumble traybake works because the sponge, fruit and crumble each play a clear role. The sponge provides a soft but stable base, helped by cornflour, which absorbs some of the fruit juice. Rhubarb adds tartness and freshness, while strawberries bring sweetness and moisture. Together they create a balanced flavour that is neither too sharp nor too sweet. The chilled crumble, made from fat, flour and sugar, bakes into a crisp layer that contrasts with the soft fruit. Flaked almonds add roasted flavour and extra bite. The most important points are not chopping the fruit too small and baking the traybake long enough for the sponge to cook through despite the juicy fruit topping.
🛠️ Troubleshooting
Why is the base of my strawberry rhubarb crumble traybake soggy?
Strawberries and rhubarb release a lot of juice as they bake. Do not chop the fruit too small, spread it evenly and bake the cake fully. The cornflour in the batter helps absorb moisture; if your strawberries are very juicy, pat them especially dry after washing.
Why is my crumble topping not crisp?
The margarine or butter was probably too soft, or the crumble was overworked. Use cold fat, rub the mixture only until crumbly and chill it before baking. The topping also firms up more once the cake has cooled.
What should I do if the sponge is still raw in the centre?
Bake for another 5 to 10 minutes and test with a skewer in an area with less fruit. If the crumble is already dark, cover the tray loosely with baking parchment and continue baking until the sponge is done.
Why does the rhubarb taste too sharp?
Rhubarb is naturally tart. The strawberries and sugar balance it. If your rhubarb is especially sharp, toss it with 1 to 2 tablespoons of sugar and let it stand briefly before baking. Do not pour all the excess liquid onto the batter.
Why does the traybake fall apart when sliced?
It was probably cut while too hot or before the sponge had set. Let the cake cool until at least lukewarm, preferably fully, before slicing. Use a sharp knife and cut gently through the crumble and fruit layer.
How do I stop the fruit from sinking into the sponge?
The batter should not be too runny, and the fruit should be placed on top rather than pressed into it. Halve or quarter large strawberries, but do not push them down into the sponge.
💡 Tips and Variations
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For a richer flavour, replace the margarine with butter. Butter gives both the sponge and crumble a fuller taste and works especially well with rhubarb and strawberries.
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For a nuttier crumble, replace 20 to 30 g of the flour in the topping with ground almonds. This makes the crumble slightly more aromatic and tender.
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A little cinnamon or finely grated lemon zest in the crumble works well with strawberry and rhubarb. Cinnamon gives warmth, while lemon keeps the flavour brighter.
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For a vegan version, use plant-based margarine and replace the eggs with apple purée or flaxseed egg. The sponge will be slightly different but should stay moist.
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For a gluten-free version, use a good gluten-free cake flour blend. Check that the baking powder, cornflour and vanilla sugar are gluten free too.
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If rhubarb is not available, sharp apples, sour cherries or redcurrants work well. The important thing is to keep a tart element so the cake does not taste only sweet.
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Serve fully cooled for neat slices, or slightly warm with custard, whipped cream or vanilla ice cream if using it as a dessert.
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The key detail is fruit juice control: pat the fruit dry, avoid cutting it too small and do not remove the cake from the oven too early.
📦 Storage
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Keep the strawberry rhubarb crumble traybake covered at room temperature if you plan to eat it within one to two days. This keeps the crumble topping better than refrigerating it.
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In very warm weather, or if you need to store it for longer, keep the traybake in the fridge. The crumble will soften there, so let the cake stand briefly at room temperature before serving.
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To freeze, let the cake cool completely, cut it into pieces and wrap well. Defrost at room temperature and, if needed, refresh for 5 to 10 minutes in a low oven at 120 to 150°C to make the crumble a little crisper again.
🍷 Pairing
Strawberry rhubarb crumble traybake pairs well with a Mosel Riesling Kabinett because its acidity echoes the rhubarb and supports the sweetness of the strawberries. A Franconian Silvaner is a calmer option, with gentle spice and freshness that suit the almonds and crumble. For an international pairing, choose a light Pinot Grigio. It should not be too heavy, so the fruit remains the focus of the dessert.
❓ F.A.Q.
Can I make strawberry rhubarb crumble traybake with frozen fruit?
Yes, but frozen fruit releases more liquid. Use it only partly thawed if possible, remove excess liquid and expect the traybake to need a few extra minutes in the oven. Fresh fruit gives the best texture.
Do I need to peel rhubarb for this traybake?
Young, tender rhubarb often does not need full peeling. For thicker or stringy stalks, pull away the tough outer strings so the fruit layer bakes to a pleasant texture.
How long does strawberry rhubarb crumble traybake need to bake?
In a half-size tray, it usually needs 35 to 40 minutes at 200°C conventional. It is ready when the crumble is golden and a skewer inserted into an area with less fruit comes out without raw batter.
How do I stop the base from becoming soggy?
Pat the strawberries dry, do not cut the fruit too small and spread it evenly. The cornflour in the batter helps bind fruit juice. Make sure the traybake is fully baked before taking it out of the oven.
Can I make this traybake vegan?
Yes. Use plant-based margarine and replace the eggs with apple purée or flaxseed egg. The texture will be a little softer than the original, but the cake should remain moist.
Can I make this traybake gluten free?
Yes, replace the plain flour with a gluten-free cake flour blend and check that the baking powder, cornflour and vanilla sugar are gluten free. The baking time may vary slightly depending on the blend.
How should I store strawberry rhubarb crumble traybake?
For one to two days, room temperature is best because the crumble stays crisper. In warm weather, store it in the fridge, but expect the crumble to soften slightly.
Can I freeze strawberry rhubarb crumble traybake?
Yes. Let it cool fully, cut it into portions and freeze well wrapped. Defrost at room temperature and warm briefly in a low oven if you want to refresh the crumble topping.
🏛️ History and Tradition
Strawberry and rhubarb crumble traybake is a modern evolution of the traditional British crumble, a dessert with roots in wartime rationing when simple, seasonal ingredients were combined for comforting puddings. Rhubarb, historically cultivated in northern England and Scotland, pairs naturally with strawberries, a summer staple. This traybake reflects the British love for easy, home-baked desserts enjoyed during afternoon tea or garden parties. Its regional variations and seasonal use of fresh fruit reinforce its place in everyday British culinary tradition, while the crumble topping preserves the heritage of rustic, homely baking.
This strawberry rhubarb crumble traybake is an easy spring and summer bake that combines sweet strawberries, tart rhubarb, tender sponge and crisp crumble. The essential details are well-prepared fruit, chilled crumble and enough baking time so the base does not stay wet. The result is a moist but sliceable traybake that works for afternoon tea, picnics, family gatherings or a simple seasonal dessert.
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