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Classic Rhubarb Crumble Bars

Classic Rhubarb Crumble Bars are a delightful treat that balances sweet and tart flavors, perfect for dessert or a snack.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings: 12 bars
Course: Dessert, Snack
Cuisine: American
Calories: 200
Ingredients Method Notes

Ingredients
  

For the crust
  • 1/2 cup sugar
  • 2 cups all-purpose flour
  • 1 tbsp baking powder
  • 2/3 cup butter (cold and cut into 1/2-inch cubes)
  • 1/2 teaspoon salt
  • 1 large egg
For the filling
  • 5 stalks rhubarb (sliced into 1/2-inch thick pieces)
  • 1/2 cup sugar
  • 1 whole lemon (freshly zested and juiced)
  • 1 teaspoon vanilla extract
  • 2 1/2 teaspoons cornstarch
For the topping
  • 1 cup old fashioned oats
  • 1/2 cup sugar
  • 1 teaspoon vanilla sugar
  • 1/2 teaspoon ground cinnamon
  • 1/2 cup butter (melted and cooled slightly)

Method
 

Preparation
  1. Preheat your oven to 350°F (175°C). Grease a baking dish.
  2. In a bowl, mix together 1/2 cup sugar, 2 cups flour, baking powder, and salt. Add the cold butter cubes and mix until crumbly.
  3. Stir in the egg until just combined. Press this mixture into the bottom of the baking dish to form the crust.
Filling
  1. In another bowl, combine the sliced rhubarb, 1/2 cup sugar, lemon juice and zest, vanilla extract, and cornstarch. Toss until rhubarb is well coated.
  2. Spread the rhubarb mixture over the crust evenly.
Topping
  1. In the same bowl, mix the oats, 1/2 cup sugar, vanilla sugar, and cinnamon. Drizzle melted butter over this mixture and mix until crumbly.
  2. Sprinkle the oat mixture on top of the rhubarb filling.
Baking
  1. Bake for 40-45 minutes until the topping is golden brown and the filling is bubbly.
  2. Allow the bars to cool completely in the baking dish before slicing.

Notes

Serve at room temperature, optionally with vanilla ice cream or whipped cream. Store leftover bars in an airtight container for up to three days or refrigerated for up to a week. Freezing is viable for up to three months when properly wrapped.