Craving a wholesome yet utterly delicious treat? These Easy Blueberry Oatmeal Bars are your new go-to! Packed with juicy blueberries nestled between a buttery, crumbly oat base and topping, they’re perfect for breakfast, a snack, or a light dessert. Get ready to bake up some pure joy!
Ingredients
- 1 ½ cups old-fashioned rolled oats
- 1 cup all-purpose flour
- ½ cup packed light brown sugar
- ½ teaspoon baking powder
- ¼ teaspoon salt
- ½ cup (1 stick) unsalted butter, melted
- 1 teaspoon vanilla extract
- 2 cups fresh or frozen blueberries (do not thaw if frozen)
- ¼ cup granulated sugar
- 1 tablespoon cornstarch
- 1 tablespoon lemon juice (optional)
Instructions
- Preheat your oven to 375°F (190°C). Lightly grease an 8×8 inch baking pan or line with parchment paper, leaving an overhang on two sides.
- In a large bowl, combine the rolled oats, flour, brown sugar, baking powder, and salt. Mix well.
- Pour the melted butter and vanilla extract into the oat mixture. Stir with a fork until moist crumbs form and everything is well combined.
- Press about two-thirds of the oat mixture evenly into the bottom of the prepared baking pan.
- In a separate medium bowl, gently toss the blueberries with granulated sugar, cornstarch, and lemon juice (if using) until the blueberries are coated.
- Spread the blueberry mixture evenly over the pressed oat base in the pan.
- Crumble the remaining one-third of the oat mixture evenly over the blueberry filling.
- Bake for 30-35 minutes, or until the topping is golden brown and the filling is bubbly.
- Let the bars cool completely in the pan on a wire rack before cutting into squares. This is crucial for them to set properly.


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