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Blackberry Crumb Bars

Moist cake meets tart berries with a crunchy topping. It is the perfect summer treat!
Prep Time10 minutes
Cook Time40 minutes
Cooling time30 minutes
Total Time1 hour 20 minutes
Course: Dessert, Snack
Keyword: berry cake, blackberries, blackberry, blackberry dessert, cakes, crumb bars, crumb topping, fruit tart, pnw, pnw blackberries, summer desserts, Summer recipes, trending, trending desserts
Servings: 16 servings

Ingredients

Crumb Topping

  • 6 tbsp. butter, melted.
  • 1/2 cup light brown sugar packed.
  • 1/4 tsp salt, flaky sea salt. I love to use Osmo Four Roses Bourbon toasted vanilla sea salt.
  • 1 cup All-purpose flour

Crumb filling

  • 10 ounce blackberries 2 containers
  • 1/2 cup butter, room temperature.
  • 3/4 cup All-purpose flour
  • 1/2 tsp baking powder
  • 1 cup powdered sugar
  • 2 eggs
  • 1/4 tsp. sea salt I love to use Osmo Four Roses Bourbon toasted vanilla sea salt.
  • 1/2 tsp vanilla extract

Instructions

  • To start preheat the oven to 350 degrees.
  • Butter and line an 8" square baking pan with parchment paper. Butter the paper and flour. Dump out excess flour.
  • Now let's start on the crumb topping.
  • In a medium mixing bowl add the melted butter, brown sugar, 1/4 tsp salt, and 1 cup of flour. Stir with a fork until crumbles form. Refrigerate until time to use.
  • Moving on to the filling.
    Start by mixing the remaining flour in a medium bowl, 1/4 tsp sea salt, and baking powder.
  • Now in a mixer or large bowl with a hand mixer, add 1/2 cup room temperature butter. Beat with powdered sugar and vanilla extract.
  • Mix until light and fluffy. Add eggs in 1 at a time. Blend well.
  • Scrape down the sides of the bowl and pour into the prepared baking pan. Spread evenly.
  • Sprinkle on the blackberries.
  • Next goes the crumb topping. (A little sprinkle of the toasted vanilla sea salt if you, have it)
  • Bake for 40 minutes. The topping should be a light golden brown and a toothpick comes out clean.
  • Let the pan cool for 5 or so minutes then pull out the crumb. Let it cool completely.
  • Slice into 16 pieces.
  • Enjoy as is or add French vanilla ice cream.