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Irresistible Rhubarb Crumble Bars Recipe Easy Homemade White Chocolate Drizzle

rhubarb crumble bars - featured image

These rhubarb crumble bars feature a buttery, crunchy crust, a tangy rhubarb filling, and a silky white chocolate drizzle, creating a perfect balance of sweet and tart in a quick and easy dessert.

Ingredients

Scale
  • 2 ½ cups (300 g) all-purpose flour
  • ¾ cup (150 g) granulated sugar
  • ½ cup (100 g) packed brown sugar
  • ½ teaspoon salt
  • 1 cup (225 g) unsalted butter, cold and cubed
  • 1 teaspoon ground cinnamon
  • 4 cups (about 480 g) fresh rhubarb, chopped into ½-inch pieces
  • ¾ cup (150 g) granulated sugar
  • 2 tablespoons cornstarch
  • 1 teaspoon vanilla extract
  • 1 tablespoon fresh lemon juice
  • 1 cup (180 g) white chocolate chips
  • 2 tablespoons heavy cream

Instructions

  1. Preheat your oven to 350°F (175°C). Line a 9×13-inch baking pan with parchment paper, leaving some overhang for easy removal.
  2. In a large mixing bowl, whisk together flour, granulated sugar, brown sugar, salt, and cinnamon.
  3. Add cold, cubed butter to the dry ingredients. Use a food processor pulse or pastry cutter to cut the butter in until the mixture resembles coarse crumbs with some pea-sized bits.
  4. Press about two-thirds of this mixture evenly into the bottom of the prepared pan. Pack it down firmly. Bake for 15-18 minutes until golden and just set.
  5. While the crust bakes, combine chopped rhubarb, granulated sugar, cornstarch, vanilla extract, and lemon juice in a medium bowl. Toss gently until evenly coated.
  6. Spread the rhubarb filling evenly over the baked crust.
  7. Crumble the remaining one-third of the crust mixture over the rhubarb layer, breaking up larger clumps with your fingers.
  8. Bake the assembled bars for another 35-40 minutes, or until the crumble topping is golden and the filling is bubbly around the edges.
  9. Cool the bars completely on a wire rack, about one hour, to allow the filling to set.
  10. Combine white chocolate chips and heavy cream in a microwave-safe bowl. Heat in 20-second bursts, stirring well each time, until smooth and silky.
  11. Drizzle the white chocolate over the cooled bars using a spoon or piping bag. Let set for 10-15 minutes before slicing into squares.

Notes

Keep butter cold to ensure a crumbly crust. Use cornstarch to prevent soggy filling. Melt white chocolate in short bursts and stir frequently to avoid burning. Cool bars completely before slicing to keep them intact. For gluten-free, substitute flour with gluten-free blend; for dairy-free, use coconut oil and coconut cream. Add berries for a fruity twist or spices like ginger or nutmeg for warmth.

Nutrition

Keywords: rhubarb crumble bars, white chocolate drizzle, rhubarb dessert, crumble bars, easy dessert, spring dessert, summer dessert, homemade bars