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Delicious classic rhubarb crumble bars with a sweet crumbly topping

Classic Rhubarb Crumble Bars

Delightful and comforting Classic Rhubarb Crumble Bars with a buttery topping and a tart rhubarb filling, perfect for any occasion.
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Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Course Dessert, Snack
Cuisine American
Servings 12 bars
Calories 240 kcal

Ingredients
  

For the crust

  • 1/2 cup sugar For the crust.
  • 2 cups all-purpose flour Provides the dough base.
  • 1 tbsp baking powder For leavening.
  • 2/3 cup butter (cold and cut into 1/2-inch cubes) Use real butter for best flavor.
  • 1/2 teaspoon salt Balances sweetness.
  • 1 large egg Provides structure and richness.

For the rhubarb filling

  • 5 stalks rhubarb (sliced into 1/2-inch thick pieces) Look for firm, vibrant stalks.
  • 1/2 cup sugar Sweetens the filling.
  • 1 medium lemon (freshly zested and juiced) Adds brightness.
  • 1 teaspoon vanilla extract Enhances flavor.
  • 2 1/2 teaspoons cornstarch Thickens the filling.

For the topping

  • 1 cup old-fashioned oats Adds texture.
  • 1/2 cup sugar Sweetens the topping.
  • 1 teaspoon vanilla sugar Optional for extra sweetness.
  • 1/2 teaspoon ground cinnamon Adds warmth.
  • 1/2 cup butter (melted and cooled slightly) For binding ingredients.

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C).
  • In a large bowl, combine 1/2 cup sugar, flour, baking powder, salt, and cold butter. Blend until the mixture resembles coarse crumbs.
  • Stir in the egg until the dough is combined.
  • In another bowl, mix sliced rhubarb, 1/2 cup sugar, lemon zest, lemon juice, vanilla extract, and cornstarch. Toss until rhubarb is coated.

Assembly

  • Spread half of the crust mixture into a greased 9x13-inch baking pan.
  • Pour the rhubarb filling evenly on top, then sprinkle the remaining crust mixture over it.
  • In a small bowl, combine the oats, 1/2 cup sugar, vanilla sugar, ground cinnamon, and melted butter. Mix and sprinkle over the top.

Baking

  • Bake for about 45 minutes, until the top is golden brown and filling is bubbly.
  • Allow to cool completely before slicing.

Notes

Serve warm with vanilla ice cream or whipped cream. Fresh mint or a drizzle of caramel adds a special touch. Store in an airtight container for up to three days.

Nutrition

Serving: 1gCalories: 240kcalCarbohydrates: 34gProtein: 3gFat: 10gSaturated Fat: 6gSodium: 150mgFiber: 1gSugar: 18g
Keyword Baking, classic dessert, Comfort Food, Crumble Bars, Rhubarb Bars
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