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Cozy Strawberry Rhubarb Crisp Bars Easy Homemade Oat Crumble Recipe

strawberry rhubarb crisp bars - featured image

These cozy strawberry rhubarb crisp bars with oat crumble topping offer a perfect balance of tart and sweet flavors with a buttery, crunchy oat topping. They are easy to make and ideal for a comforting dessert or snack.

Ingredients

Scale
  • 3 cups fresh strawberries, hulled and sliced (about 450g)
  • 2 cups fresh rhubarb, diced (about 250g)
  • 3/4 cup granulated sugar (150g)
  • 1 tablespoon fresh lemon juice
  • 2 tablespoons cornstarch
  • 1 teaspoon vanilla extract
  • 1 1/2 cups rolled oats (135g)
  • 1 cup all-purpose flour (125g)
  • 3/4 cup packed brown sugar (150g)
  • 1 teaspoon ground cinnamon
  • 1/4 teaspoon salt
  • 3/4 cup unsalted butter, cold and cubed (170g)

Instructions

  1. Prepare the Fruit Filling (10 minutes): In a medium bowl, combine sliced strawberries, diced rhubarb, granulated sugar, lemon juice, cornstarch, and vanilla extract. Stir gently until the fruit is evenly coated. Set aside to macerate while you prepare the crumble.
  2. Make the Oat Crumble Mixture (10 minutes): In a large bowl, whisk together rolled oats, all-purpose flour, brown sugar, cinnamon, and salt. Add the cold, cubed butter. Using a pastry cutter or your fingertips, work the butter into the dry ingredients until the mixture resembles coarse crumbs with some pea-sized bits.
  3. Assemble the Bars (5 minutes): Preheat oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving some overhang for easy removal. Press about two-thirds of the oat crumble mixture firmly and evenly into the bottom of the pan to create the base layer.
  4. Add the Fruit Layer (5 minutes): Spoon the strawberry rhubarb filling evenly over the oat crust. Use a spatula to gently spread it out without pressing down too hard.
  5. Top with Remaining Crumble (2 minutes): Sprinkle the remaining oat crumble mixture evenly over the fruit layer without pressing it down.
  6. Bake the Bars (30-35 minutes): Place the pan in the center of the oven and bake until the topping is golden brown and the fruit filling is bubbly around the edges. If the topping browns too quickly, cover loosely with foil halfway through baking.
  7. Cool Completely (about 1 hour): Transfer the pan to a cooling rack and let the bars cool completely in the pan to allow the filling to set.
  8. Slice and Serve: Use the parchment paper overhang to lift bars out of the pan. Cut into squares or rectangles. Serve slightly warm or at room temperature.

Notes

Use cold butter for the crumble topping to ensure a crisp texture. Do not overmix the fruit filling to keep fruit slightly chunky. Let bars cool completely before slicing to prevent filling from oozing. For gluten-free, substitute all-purpose flour with almond flour or gluten-free blend and use dairy-free butter for vegan adaptation. Chilling bars after cooling helps firm them up. If topping browns too fast, tent with foil.

Nutrition

Keywords: strawberry rhubarb bars, oat crumble, fruit bars, easy dessert, homemade bars, strawberry rhubarb crisp, oat topping, seasonal dessert