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Easy Rhubarb Crumble

A simple homemade rhubarb crumble recipe with a soft tart fruit filling and a golden buttery crumble topping. Perfect for a warm and comforting dessert.
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Prep Time 15 minutes
Cook Time 40 minutes
Servings: 6
Course: Dessert
Cuisine: American
Ingredients Method Notes

Ingredients
  

  • 500 g rhubarb chopped
  • 175 g sugar
  • 1 tbsp cornstarch
  • 1 tsp vanilla extract
  • 150 g all-purpose flour
  • 100 g cold butter cubed
  • 50 g oats optional

Method
 

  1. Preheat oven to 180°C and grease baking dish lightly with butter.
  2. Place chopped rhubarb in a bowl and mix with sugar, cornstarch, and vanilla until evenly coated.
  3. Spread rhubarb mixture evenly into prepared baking dish.
  4. In a separate bowl, combine flour and sugar, then add cold butter cubes.
  5. Rub butter into flour using fingertips until mixture becomes coarse crumbs.
  6. Stir in oats if using.
  7. Sprinkle crumble mixture evenly over rhubarb filling without pressing it down.
  8. Bake for 35 to 40 minutes until topping is golden and filling is bubbling.
  9. Allow to cool for 10 to 15 minutes before serving.

Notes

  • Fresh rhubarb gives the best texture and flavor, but frozen rhubarb can also be used. If using frozen rhubarb, thaw it completely and drain any excess liquid before mixing with the sugar and cornstarch.
  • The sweetness of rhubarb can vary. Taste a small piece before baking and increase the sugar by 1 to 2 tablespoons if your rhubarb is very tart.
  • Keep the butter cold when making the crumble topping. Cold butter creates a crisp, crumbly texture after baking.
  • Do not overwork the topping mixture. A few larger butter pieces will help create crunchy crumble clusters.
  • For extra texture, add rolled oats to the topping mixture. They create a heartier, rustic crumble.
  • If the crumble begins browning too quickly during baking, loosely cover the dish with aluminum foil for the remaining baking time.
  • Allow the crumble to rest for at least 10 to 15 minutes after baking. This helps the fruit filling thicken and makes serving easier.
  • Serve warm with vanilla ice cream, whipped cream, or custard for a classic dessert.
  • Store leftovers covered in the refrigerator for up to 4 days.
  • Reheat individual portions in the microwave or warm the entire dish in a 160°C (325°F) oven until heated through.
  • This recipe can be prepared a few hours ahead of time and baked just before serving.
  • For a richer flavor, replace part of the granulated sugar in the topping with light brown sugar.
  • Add strawberries, apples, raspberries, or blackberries to the rhubarb filling for a delicious fruit variation.
  • To make the crumble topping even crunchier, add 2 to 3 tablespoons of chopped pecans, walnuts, or almonds.
  • This recipe is easy to double for larger gatherings. Use a larger baking dish and add a few extra minutes to the baking time if needed.