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Blueberry Oatmeal Breakfast Bars Recipe

4.7 from 110 reviews

Delicious and wholesome Blueberry Oatmeal Breakfast Bars featuring a crumbly oat base and a juicy blueberry filling. Perfect as a grab-and-go breakfast or snack, these bars combine the heartiness of oats with the natural sweetness of blueberries in a lightly spiced, baked treat.

Ingredients

Scale

Dry Ingredients

  • 1 cup old-fashioned oats
  • 3/4 cup all-purpose flour (or gluten-free flour blend)
  • 1/3 cup light brown sugar
  • 1/4 teaspoon baking soda
  • 1/4 teaspoon salt
  • 1/2 teaspoon cinnamon (optional)

Wet Ingredients

  • 6 tablespoons unsalted butter, melted (or coconut oil)
  • 1 teaspoon vanilla extract

Blueberry Filling

  • 1 cup blueberries (fresh or frozen)
  • 1/4 cup granulated sugar
  • 2 teaspoons cornstarch

Instructions

  1. Preheat and Prepare Pan: Preheat the oven to 375°F (190°C). Line an 8-inch square baking pan with parchment paper, leaving some overhang to easily lift the bars out after baking.
  2. Mix Dry Ingredients: In a large bowl, combine oats, flour, light brown sugar, baking soda, salt, and optional cinnamon. Stir until well mixed.
  3. Add Wet Ingredients: Pour in the melted butter and vanilla extract into the dry mixture. Stir well until the mixture becomes crumbly and evenly combined.
  4. Form the Base: Press half of the oat mixture firmly into the bottom of the prepared pan, creating an even and compact base layer.
  5. Prepare Blueberry Filling: In a separate bowl, toss the blueberries with granulated sugar and cornstarch until fully coated. Spread this blueberry mixture evenly over the oat base layer in the pan.
  6. Add Crumble Topping: Crumble the remaining oat mixture over the blueberry topping, gently pressing it down to cover the berries evenly.
  7. Bake: Place the pan in the preheated oven and bake for 35-40 minutes, or until the top is golden brown and the blueberries are bubbly and cooked through.
  8. Cool and Serve: Remove from the oven and let the bars cool completely in the pan on a wire rack. Once cooled, use the parchment paper overhang to lift the bars out and cut into squares for serving.

Notes

  • For a gluten-free version, use a certified gluten-free flour blend.
  • Frozen blueberries can be used; do not thaw before mixing to prevent excess moisture.
  • The cinnamon is optional but adds a warm spice flavor that complements the blueberries.
  • Store bars in an airtight container at room temperature for up to 3 days or refrigerate for up to a week.
  • These bars can be frozen for up to 2 months; thaw before serving.

Keywords: blueberry oatmeal bars, breakfast bars, healthy breakfast, baked oatmeal bars, blueberry snack bars, vegetarian breakfast