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Freshly baked rhubarb crumble ready to be served.
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5 from 1 vote

Rhubarb crumble

This easy rhubarb crumble recipe is made from simple ingredients you probably have in your pantry! This rhubarb crisp is baked in stages to ensure the filling sets properly and the crumble topping bakes without burning.
Course Dessert
Cuisine American
Keyword plain rhubarb crumble, rhubarb crisp, rhubarb crumble
Prep Time 20 minutes
Cook Time 1 hour 30 minutes
Total Time 1 hour 50 minutes
Servings 8
Calories 401kcal
Author Janice


8x8 baking dish


Rhubarb filling

  • 1 kg (8 cups) fresh rhubarb trimmed and washed thoroughly
  • 250 grams ( cups) granulated sugar
  • 32 grams (¼ cup) cornstarch
  • 30 mL (2 tablespoon) water
  • 5 mL (1 teaspoon) vanilla bean paste or pure vanilla extract
  • 10 Fresh raspberries optional (adds pink colour if your rhubarb is very green)

Crumble topping

  • 185 grams ( cups) all-purpose flour
  • 100 grams (½ cup) granulated sugar
  • 1.25 mL (¼ teaspoon) Diamond Crystal fine kosher salt
  • 115 grams (½ cup) unsalted butter cold and cut into cubes



Rhubarb filling

  • Preheat the oven to 400 ºF. Place a 20x20x5 cm (8x8x2 inch) ceramic baking dish (like a deep square Pyrex or a ceramic baking dish with at least 2 inch sides) on a parchment-lined sheet pan. Set aside.
  • Slice washed rhubarb into 2.5 cm (1 inch) pieces. Place half the rhubarb in the baking dish. Sprinkle the sugar, cornstarch, and water over top, then toss the ingredients together to evenly coat all the rhubarb. You can use your hands for this.
  • Cover the baking dish with a sheet of aluminum foil then bake the rhubarb for 30 minutes. When you carefully peel back the foil, you will see the rhubarb should be soft and has released a lot of water.
  • Fold in the rest of the rhubarb and the vanilla bean paste (or extract) to make sure the filling is well mixed using a heatproof spatula. You can also add a few raspberries for colour. Set aside.

Crumble topping

  • Drop the oven temperature to 375 ºF.
  • In a large bowl, whisk the flour, sugar, and salt.
  • Drop the cubes of butter into the bowl and using your hands toss them in the flour mixture to coat them. Work the butter into the flour using your finger tips to form a crumbly mixture.
  • Sprinkle the crumble over the rhubarb filling. Bake the rhubarb crumble, uncovered, until the filling is bubbling and very hot, even in the middle, and the topping is golden. This will take about an hour, if not more.
  • Let cool for at least an hour (if not several hours) so that the juices set. Serve plain or topped with vanilla ice cream.
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Calories: 401kcal | Carbohydrates: 71g | Protein: 4g | Fat: 12g | Saturated Fat: 7g | Trans Fat: 1g | Cholesterol: 31mg | Sodium: 69mg | Potassium: 393mg | Fiber: 3g | Sugar: 46g | Vitamin A: 488IU | Vitamin C: 11mg | Calcium: 116mg | Iron: 1mg