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Blackberry bars with oat crumble topping cut into squares.

Blackberry Bars


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  • Author: Maria
  • Total Time: 50 minutes
  • Yield: 16 bars 1x

Description

Blackberry bars made with sweet and tangy summer blackberries and an oat butter crumble.  An easy and delicious summer treat.


Ingredients

Scale

For the crust and crumb topping

  • 280 g (2 cups) all-purpose flour
  • 100 g (1 cup) old-fashioned oats
  • 165 (3/4 cups) packed light brown sugar
  • 4 g (2 teaspoons) cinnamon
  • 2.8 g (1/2 teaspoon) salt
  • 0.7 g (1/4 teaspoon) nutmeg
  • 226 g (1 cup) cold butter, cubed

For the blackberry filling

  • 340 g (12 oz) fresh blackberries
  • 12 g (1 tablespoon) granulated sugar
  • 6.3 g (3 tablespoons) cornstarch
  • 15 g (1 teaspoon) fresh lemon juice
  • Zest from 1 lemon

Instructions

  1. Preheat oven to 350°F/177°C.  Line a 9×9-inch baking pan with parchment paper so that it hangs over the sides. Set aside.

For the crust and crumb

  1. In a large bowl, whisk together flour, oats, brown sugar, cinnamon, nutmeg, and salt.  Using a pastry blender, cut cold butter into the mixture until it resembles a coarse meal.

For the filling.

  1. In a medium bowl, combine blackberries, sugar, cornstarch, lemon juice, and lemon zest.
  2. Divide your crust mixture into two.  Transfer one half to prepared baking pan and press evenly into the bottom of the pan.  Pour blackberry mixture on top and spread evenly.  Crumble remaining half of your oat mixture on top of the blackberry layer.
  3. Bake in preheated oven for 30-35 minutes, or until the blackberries are bubbling.  Transfer to a cooling rack and cool until room temperature.  Refrigerate for at least 1 hour before cutting and serving.

Notes

Make-ahead: You can make the crust and topping up to 3 days in advance and store it in the refrigerator.  You can also store it in a freezer-safe container or bag in the freezer for up to 3 months.

Storing:  Store in an airtight container in the refrigerator for up to 1 week.  You can also wrap these bars individually and store them in a freezer-safe container in the freezer for up to 3 months.  Allow the bars to thaw in the refrigerator overnight.

  • Prep Time: 15 minutes
  • Cook Time: 35 minutes
  • Category: Bars
  • Method: Baking