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Delicious rhubarb crumble bars topped with golden crumbly crust

Best Rhubarb Crumble Bars

A delightful balance of sweet and tangy, these Best Rhubarb Crumble Bars feature a buttery base, tart rhubarb filling, and crunchy crumble topping, perfect for any family gathering.
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Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Servings: 12 bars
Course: Dessert, Snack
Cuisine: American
Calories: 200
Ingredients Method Notes

Ingredients
  

For the Rhubarb Filling
  • 2 cups rhubarb, chopped
  • 1 cup sugar
  • 1 tablespoon cornstarch
  • 1 tablespoon lemon juice
For the Crust and Crumble
  • 1 1/2 cups all-purpose flour
  • 1/2 teaspoon baking powder
  • 1/4 teaspoon salt
  • 1/2 cup unsalted butter, softened
  • 1/2 cup brown sugar
  • 1/2 cup oats

Method
 

Preparation
  1. Preheat the oven to 350°F (175°C).
  2. In a mixing bowl, combine the chopped rhubarb, sugar, cornstarch, and lemon juice. Toss until the rhubarb is evenly coated and set aside.
  3. In a large bowl, mix together the flour, baking powder, and salt.
  4. Cream together the softened butter and brown sugar until light and fluffy, then gradually mix in the dry ingredients. Stir in the oats.
Assembly and Baking
  1. Press half of the crumble mixture into the bottom of a greased 9x13-inch baking dish to form the crust.
  2. Pour the rhubarb filling evenly over the crust, then sprinkle the remaining crumble mixture on top.
  3. Bake in the preheated oven for 30 minutes, or until the top is golden brown and the filling is bubbly.
  4. Once baked, remove from the oven and let cool completely before slicing into bars.

Notes

Store the bars in an airtight container at room temperature for up to 3 days, or refrigerate for about a week. For freezing, seal in a freezer-safe container for up to three months.