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blueberry crumble bar

Blueberry Crumble Bar

20 mins
45 mins
9 servings


Blueberry Mixture

  • 2 cups fresh BC blueberries
  • 2 tsp cornstarch
  • 1 tbsp lemon zest
  • 1 tbsp freshly squeezed fresh lemon juice¬†
  • 1/4 cup granulated sugar

For the Bottom Layer & Crumble

  • 1 and 1/4 cup all-purpose flour
  • 1/2 cup granulated sugar
  • 1/2 tsp baking powder
  • 1/2 cup cold, unsalted butter
  • 1 large egg yolk
  • 1 tbsp brown sugar


  1. Preheat the oven to 350F degrees. Line a baking dish with baking sheet paper and grease with butter.
  2. In a medium bowl, toss together the blueberries, cornstarch, lemon zest, lemon juice & sugar for the blueberry mixture. Set aside.
  3. In a separate large bowl, whisk together the flour, 1/2 cup granulated sugar & baking powder.
  4. Cut in the butter & egg yolk with a pastry cutter until you get pea-sized crumbles.
  5. Pour about three-quarters of the dry mixture into the prepared baking dish. Pour the blueberry mixture over top.
  6. Add in brown sugar with the remaining dry texture.
  7. Crumble the remaining dry mixture over the blueberry mixture by squeezing it in a fist with your hand, then crumbling it over top.
  8. Bake in the oven for about 45 minutes, until you see the blueberries bubbling and the crumble layer starting to turn golden.
  9. Allow to cool fully to room temperature, then enjoy!