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Blackberry Oat Crumb Bars recipe

Blackberry Oat Crumb Bars

Author Roberto RomanoRoberto Romano
These Blackberry Oat Crumb Bars are a perfect summer dessert, combining fresh blackberries with a golden oat crumb topping.
Prep Time 20 minutes
Cook Time 50 minutes
Total Time 1 hour 10 minutes
Course Dessert
Cuisine American
Servings 8 slices
Calories 320 kcal

Equipment

  • 1 9-inch square baking pan lined with parchment paper
  • 1 mixing bowl large
  • 1 wooden spoon

Ingredients
  

Crumb Mixture

  • 1 cup all-purpose flour
  • 1 cup rolled oats
  • 3/4 cup brown sugar
  • 1/2 tsp baking powder
  • 1/2 tsp ground cinnamon
  • 1/4 tsp salt
  • 1/2 cup unsalted butter melted

Blackberry Filling

  • 2 cups fresh blackberries
  • 1/4 cup granulated sugar
  • 1 tbsp lemon juice
  • 1 tbsp cornstarch

Instructions
 

Preparation

  • Preheat your oven to 350°F (175°C) and line a 9-inch square baking pan with parchment paper.
  • In a large mixing bowl, combine flour, oats, brown sugar, baking powder, cinnamon, and salt. Add melted butter and mix until crumbly.
  • In another bowl, gently mix blackberries with sugar, lemon juice, and cornstarch until evenly coated.
  • Press half of the crumb mixture into the bottom of the prepared pan to form the base. Spread the blackberry filling evenly over the base. Sprinkle the remaining crumb mixture on top of the blackberries.
  • Bake in the preheated oven for 45-50 minutes, or until the top is golden brown and the blackberry filling is bubbling.

Serving

  • Allow the bars to cool completely in the pan on a wire rack before cutting into slices. Serve as a dessert or snack.

Storage

  • Store leftover bars in an airtight container at room temperature for up to 3 days. For longer storage, wrap the bars in plastic wrap and freeze for up to 2 months.

Notes

Pro Tips: Use a combination of old-fashioned and quick oats for texture. Let the bars cool fully before slicing. Ingredient Substitutions: You can substitute raspberries or blueberries for blackberries if desired. How to Serve: Serve with a scoop of vanilla ice cream or a dollop of whipped cream. Storage & Freshness: Store in an airtight container at room temperature for up to 3 days, or freeze for up to 2 months. Make-Ahead Tips: Prepare the crumb mixture in advance and store in the refrigerator for up to 3 days before assembling the bars.
Keyword Blackberry Oat Crumb Bars, easy crumb bars, summer fruit desserts