Description
Buttery blueberry crumble bars made with a simple oat crust, juicy blueberry filling, and golden crumb topping. Perfect for dessert, brunch, snacks, or make-ahead treats.
Ingredients
Scale
- 1 1/2 cups all-purpose flour
- 1 cup old-fashioned oats
- 3/4 cup granulated sugar
- 1/2 cup brown sugar
- 1/2 teaspoon baking powder
- 1/2 teaspoon salt
- 3/4 cup unsalted butter, melted
- 1 teaspoon vanilla extract
- 2 1/2 cups fresh blueberries
- 1/4 cup granulated sugar
- 1 tablespoon cornstarch
- 1 tablespoon lemon juice
- 1 teaspoon lemon zest
- 1/2 teaspoon vanilla extract
Instructions
- Preheat oven to 350°F and line an 8×8-inch baking pan with parchment paper.
- Mix flour, oats, sugars, baking powder, and salt in a large bowl.
- Add melted butter and vanilla, then stir until crumbly.
- Press two-thirds of the crumble mixture firmly into the pan.
- In a separate bowl, mix blueberries, sugar, cornstarch, lemon juice, lemon zest, and vanilla.
- Spread blueberry filling over the crust.
- Sprinkle remaining crumble mixture over the top.
- Bake for 33 to 38 minutes, until golden and bubbling.
- Cool completely before slicing into bars.
Notes
Store in an airtight container in the refrigerator for 4 to 5 days. Freeze sliced bars for up to 2 months. For clean slices, chill before cutting. Do not thaw frozen blueberries before using.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 12 bars
- Calories: 245 per bar
- Sugar: 22g
- Fat: 11g