Strawberry Rhubarb Crumble Bars (Print)

Tart strawberry and rhubarb filling nestled in a buttery oat crumble bar, ideal for spring and summer treats.

# What You’ll Need:

→ Fruit Filling

01 - 1 ½ cups fresh strawberries, hulled and diced
02 - 1 ½ cups fresh rhubarb, diced
03 - ⅓ cup granulated sugar
04 - 2 tablespoons cornstarch
05 - 1 teaspoon lemon juice
06 - ½ teaspoon vanilla extract

→ Crumble Base & Topping

07 - 1 ½ cups all-purpose flour
08 - 1 ¼ cups old-fashioned rolled oats
09 - ¾ cup light brown sugar, packed
10 - ½ teaspoon salt
11 - ½ teaspoon ground cinnamon
12 - ¾ cup unsalted butter, melted and slightly cooled

# How To Make:

01 - Preheat oven to 350°F. Line an 8x8-inch baking pan with parchment paper, leaving an overhang for easy removal.
02 - In a medium bowl, combine strawberries, rhubarb, granulated sugar, cornstarch, lemon juice, and vanilla extract. Toss gently and set aside.
03 - In a large bowl, mix flour, oats, brown sugar, salt, and cinnamon. Pour in melted butter and stir until a crumbly mixture forms.
04 - Reserve 1 cup of the crumble mixture for the topping. Press the remaining crumble evenly into the bottom of the prepared pan to form the base.
05 - Spread the strawberry rhubarb mixture evenly over the base.
06 - Sprinkle the reserved crumble mixture over the fruit layer.
07 - Bake for 35–40 minutes, or until the top is golden and the filling is bubbling.
08 - Let cool completely in the pan before lifting out and slicing into bars.

# Expert Tips:

01 -
  • These bars capture the perfect sweet-tart balance that makes spring desserts so unforgettable
  • The oat crumble stays buttery and tender, never tough or dry like some crumble recipes
02 -
  • Cutting before completely cool results in messy bars, so plan ahead or make them the night before
  • Overbaking makes the crumble hard, so pull them when golden even if the center still looks slightly soft
03 -
  • Chop the rhubarb and strawberries into similar small pieces for even baking
  • The parchment overhang is your friend, use it to lift the whole batch out easily

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