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Rhubarb Berry Crumble

A simple summer pleasure, this rhubarb berry crumble has a tart, jammy filling and a buttery almond topping that is baked until crisp. Served warm, drowning in a pool of sweet, creamy vanilla custard, it’s summer in a bowl.

Rhubarb berry crumble with a golden almond topping in a baking dish

What is summer without at least one jammy, fruity dessert? This rhubarb berry crumble is for those who want a dessert that’s more tart than sweet, as it is decidedly tart. To balance that out, I like serving it with a generous amount of vanilla custard or vanilla ice cream.

The topping is nutty and buttery, and if you prefer a crumble that’s more topping than filling, I suggest doubling it. This crumble is decidedly filling-forward!

I also recommend pressing the topping over the entire filling, making sure to cover the surface completely. That way, it’s less likely to sink into the fruit, as mine did here – oops, you live and you learn.

You can use frozen berries or fresh – whatever variety you have on hand. You can also play with the ratio: use more strawberries, blueberries, or blackberries if that’s your preference. The filling comes together by simply mixing the fruit with a little cornstarch, lemon zest, and vanilla.

The topping is mixed by hand, so no special equipment is needed! Well, except for a kitchen scale, of course, if you want to get your measurements right and skip washing all those extra measuring cups.

Fresh rhubarb and berries prepared for a crumble dessert
Fresh rhubarb and berries prepared for a crumble dessert

Tips & Variations

  • Use fresh or frozen berries. Frozen berries can be used straight from the freezer – no need to thaw them first!
  • Mix and match the berries. Use any combination of strawberries, blueberries, raspberries, or blackberries, and adjust the ratios to suit your taste.
  • Double the topping. If you prefer a crumble with more buttery topping than fruit, simply double the crumble ingredients.
  • Cover the filling completely. When sprinkling on the topping, make sure the fruit is covered all the way to the edges to help prevent it from sinking into the filling.
rhubarb berry crumble before going in the oven
Rhubarb berry crumble served with vanilla custard

FAQs

Can I use fresh berries?
Yes. I use frozen berries, but fresh berries absolutely work. If using frozen, there’s no need to thaw them first. 

Can I prevent the almonds from browning too much?
Yes. Instead of sprinkling the sliced almonds over the top, mix them into the crumble before scattering it over the fruit. This keeps them from toasting as deeply.

Can I use different berries?
Absolutely. Use any combination of strawberries, blueberries, raspberries, or blackberries, and adjust the proportions to your taste.

Can I double the crumble topping?
Yes. If you prefer a crumble with a thicker, crunchier topping, simply double the topping ingredients.

More Strawberry Recipes

Strawberry Peach Basil Crisp with Brown Butter & Sesame: Juicy strawberries and peaches are tossed with fresh basil and tucked beneath a nutty brown butter crumble with toasted sesame seeds. It’s a simple summer dessert that balances sweet fruit with savory notes, best served warm with a scoop of vanilla ice cream.

Cornbread Loaf with Macerated Strawberries: Tender, buttery cornbread meets juicy macerated strawberries in this simple summer dessert. The warm loaf soaks up all that berry syrup, making each slice equal parts rustic and elegant.

Strawberry Orange Layer Cake: Orange cake layers are filled with fresh strawberries and whipped cream, making a cake that feels bright, fresh, and unmistakably summery. It’s the kind of dessert that belongs at birthdays, garden parties, and long weekend gatherings.

Strawberry Summer Cake: This strawberry summer cake is nutty, buttery, and studded with fresh strawberries that become wonderfully jammy as they bake. Simple enough for an afternoon snack yet beautiful enough to end a summer dinner party, it’s the kind of cake you’ll find yourself making all season long.

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Rhubarb berry crumble served with vanilla custard

Rhubarb Berry Crumble

A simple rhubarb berry crumble with a jammy filling and a buttery almond topping. Serve it warm with vanilla custard, or vanilla ice cream for an effortless spring and summer dessert.
Prep Time 25 minutes
Bake Time 40 minutes
Course Dessert
Cuisine American
Servings 1 8-inch crumble

Ingredients
  

Filling:

  • 450g (4 cups) rhubarb
  • 250g (2 cups) mixed berries
  • 2 tbsp granulated sugar
  • 2 tbsp cornstarch
  • zest of 1 lemon
  • ½ lemon, juiced
  • 1 tsp vanilla 
  • pinch of salt

Topping:

  • 100g (¾ cup + 1 tbsp) all-purpose flour
  • 50g (¼ cup) granulated sugar
  • ¼ tsp sea salt
  • 75g (5 tbsp) cold unsalted butter, cut into cubes
  • 30g (¼ cup) sliced almonds 

Instructions
 

  • Preheat the oven to 350°F (180°C).

Filling:

  • Rinse the rhubarb and cut it into ½-inch slices. If using fresh strawberries, hull them and cut them in half.
  • In a large bowl, combine the chopped rhubarb and mixed berries, granulated sugar, cornstarch, lemon zest, lemon juice, vanilla, and a pinch of salt. Toss until the fruit is evenly coated, then transfer to a baking dish.

Topping:

  • In a separate bowl, combine the flour, sugar, and salt. Add the cold butter and rub it into the flour mixture with your fingertips until the mixture resembles coarse crumbs. 
  • Sprinkle the crumble evenly over the fruit, pressing it around the edges so the filling is completely covered. Scatter the sliced almonds on top.
  • Bake for 40-50 minutes, or until the filling is bubbling around the edges and the topping is golden.
  • Let the crumble rest for all least 10-15 minutes before serving. Enjoy warm on its own or with vanilla custard or vanilla ice cream.
Keyword berries, crumble, rhubarb, strawberry

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