Blueberry Oatmeal Bars

No ratings yet

These Blueberry Oatmeal Bars are buttery, crumbly, and bursting with juicy blueberries. The perfect mix of tart fruit and a golden oat crust, with a hint of cinnamon and lemon for a fresh, cozy bite.

Course Dessert

Cuisine American

Keyword Blueberry bars, blueberry oatmeal bars, blueberry pie bars

Prep Time 15

Cook Time 10

Total Time 25

Servings bars

Calories 345

Author Erren Hart

Ingredients

For the Crust & Topping:

1 ½ cups all-purpose flour
1 cup old-fashioned rolled oats divided (¾ cup for crust mixture, ¼ cup for topping)
¼ cup light brown sugar packed
¼ cup granulated sugar
1 teaspoon baking powder
½ teaspoon ground cinnamon
¼ teaspoon salt
10 tablespoons unsalted butter melted

For the Blueberry Filling:

4 ½ cups fresh blueberries if using frozen, thaw and drain well
⅓ cup granulated sugar
2 tablespoons cornstarch
1 tablespoon lemon juice
1 teaspoon lemon zest

Instructions

Preheat the oven to 350°F (177°C). Line a 9-inch square baking pan with parchment paper, leaving some overhang on the sides for easy lifting.
In a medium bowl, whisk together the flour, ¾ cup of the oats, brown sugar, granulated sugar, baking powder, cinnamon, and salt. Pour in the melted butter and mix until the texture is moist and crumbly, with no dry spots.
Measure out 2 cups of the crust mixture and press it firmly into the prepared pan to form an even layer. Bake for 10 minutes, then let cool slightly.
Sprinkle the reserved ¼ cup oats evenly over the baked crust layer.
In another bowl, gently toss the blueberries with the sugar, cornstarch, lemon juice, and lemon zest until evenly coated.
Spread the blueberry filling evenly over the crust. Sprinkle the remaining crust mixture evenly over the top.
Return to the oven and bake for 35–40 minutes, or until the top is golden and the blueberry juices are bubbling. Cover loosely with foil if the topping starts to brown too quickly.
Let the bars cool completely in the pan. Lift them out using the parchment paper, slice into squares, and enjoy.

Nutrition