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Oatmeal Blueberry Bars Recipe

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3.9 from 62 reviews

These Oatmeal Blueberry Bars combine a buttery oat crumble with a luscious fresh blueberry filling, baked to golden perfection. Perfect for a wholesome snack or a light dessert, they offer a balance of sweet and tart flavors wrapped in a satisfying crumbly texture.

Ingredients

Crust and Crumble

  • 1 cup (2 sticks; 227g) unsalted butter, melted
  • 2 cups (250g) all-purpose flour (gluten-free if needed)
  • 1 1/2 cups (150g) old-fashioned rolled oats (gluten-free if needed)
  • 1 teaspoon cinnamon
  • 1/2 teaspoon salt
  • 1 cup (200g) light brown sugar, packed

Blueberry Filling

  • 16 ounces fresh blueberries
  • 1/4 cup granulated sugar
  • 2 tablespoons fresh lemon juice (juice from 1/2 lemon)
  • 1 tablespoon cornstarch

Instructions

  1. Preheat oven and prepare pan: Preheat the oven to 350°F (175°C) and line an 8×8-inch metal baking pan with parchment paper to prevent sticking and make removal easier.
  2. Make the crust and crumble mixture: In a large bowl, combine the melted butter, flour, oats, brown sugar, cinnamon, and salt. Stir until the mixture becomes dry and sandy with some larger crumbly pieces. This mixture creates both the base crust and the topping crumble. Set aside about 1 heaping cup (approximately 1 1/2 cups used in the recipe) for the topping.
  3. Press crust into pan: Transfer the remaining crumb mixture into the prepared baking pan. Use a spatula or your fingers to evenly press the mixture firmly into the bottom to form a smooth, even crust layer.
  4. Prepare blueberry filling: In the same or a separate large bowl, toss together the fresh blueberries, granulated sugar, lemon juice, and cornstarch. This coats the berries evenly and helps thicken the filling as it bakes.
  5. Assemble the bars: Pour and spread the blueberry mixture evenly over the crust in the pan. Then sprinkle the reserved crumb topping over the blueberries, allowing some berries to remain visible for a rustic look.
  6. Bake the bars: Place the pan in the preheated oven and bake for 50-55 minutes, or until the crumble topping is golden brown and blueberries are bubbling along the edges. After 40 minutes of baking, check the bars and if the topping is browning too quickly, loosely cover with foil for the remaining time.
  7. Cool and serve: Remove the bars from the oven and allow them to cool for 30-60 minutes. Use the parchment paper overhang to lift the bars out of the pan and cool completely on a rack or in the freezer to speed up cooling. Once chilled, slice into 16 squares and enjoy.

Notes

  • Use gluten-free flour and oats if you require a gluten-free version.
  • Fresh blueberries provide the best flavor and texture; frozen can be used but may yield a slightly more watery filling.
  • Press the crust firmly so it binds well and holds together after baking.
  • Storing bars in an airtight container keeps them fresh for up to 3 days; they can also be refrigerated for longer freshness.
  • For a nuttier flavor, consider adding chopped nuts to the crumble topping.
  • If the topping browns too quickly, covering with foil prevents burning while allowing the filling to cook through.

Find it online: https://justsosavory.com/oatmeal-blueberry-bars-recipe/