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Easy Nectarine Blueberry Crumble Bars

nectarine blueberry crumble bars - featured image

These Easy Nectarine Blueberry Crumble Bars are a perfect handheld summer snack featuring a buttery crumble crust and juicy fruit filling with nectarines and blueberries. They are quick to make, simple, and delicious.

Ingredients

Scale
  • 2 ½ cups all-purpose flour (310 g)
  • 1 cup old-fashioned rolled oats (90 g)
  • ¾ cup packed brown sugar (150 g)
  • 1 cup unsalted butter, cold and cubed (225 g)
  • 1 tsp ground cinnamon
  • ½ tsp salt
  • 3 cups fresh nectarines, sliced (about 4 medium)
  • 1 ½ cups fresh blueberries (225 g)
  • ⅓ cup granulated sugar (65 g)
  • 2 tbsp cornstarch
  • 1 tbsp fresh lemon juice
  • 1 tsp vanilla extract

Instructions

  1. In a large bowl, combine 2 ½ cups all-purpose flour, 1 cup rolled oats, ¾ cup brown sugar, 1 tsp ground cinnamon, and ½ tsp salt. Toss to mix evenly.
  2. Add the cold, cubed butter. Use a pastry cutter or two forks to cut the butter into the dry ingredients until the mixture resembles coarse crumbs (about pea-sized bits), about 5 minutes.
  3. Reserve 1 ½ cups of the crumble mixture and set aside in the fridge for the topping.
  4. Line a 9×13 inch baking pan with parchment paper or lightly grease it. Press the remaining crumble mixture evenly into the bottom to form the crust. Smooth it out with the back of a measuring cup.
  5. Bake the crust at 350°F (175°C) for 15 minutes or until just starting to turn golden.
  6. While the crust bakes, gently toss together sliced nectarines, blueberries, ⅓ cup granulated sugar, 2 tbsp cornstarch, 1 tbsp fresh lemon juice, and 1 tsp vanilla extract in a medium bowl. Let sit for 5 minutes to macerate and thicken slightly.
  7. Remove the crust from the oven and spread the fruit filling evenly over the warm crust.
  8. Sprinkle the reserved crumble topping over the fruit layer, leaving it loose to crisp up.
  9. Bake again at 350°F (175°C) for 30-35 minutes until the topping is golden brown and the fruit filling is bubbling at the edges.
  10. Cool the bars completely in the pan on a wire rack for at least 2 hours to allow the filling to set.
  11. Slice into bars and serve as is or with vanilla ice cream or whipped cream.

Notes

Keep butter cold to achieve a crumbly texture. Bake crust first to prevent sogginess. Let bars cool completely before slicing to help filling set. If nectarines are very juicy, reduce fruit amount or bake a few minutes longer. Use gluten-free flour and certified gluten-free oats for gluten-free version. Vegan butter and maple syrup can be used for a vegan version.

Nutrition

Keywords: nectarine bars, blueberry bars, crumble bars, summer snacks, fruit bars, easy dessert, handheld dessert, summer fruit dessert