5 from 24 votes
Blueberry Crumble Bars
Blueberry crumble bars feature a bottom and top crust of a mix of all-purpose flour, rolled oats, brown sugar, cinnamon, and cold butter. Between these layers, a fresh blueberry filling with lemon juice and zest is spread. When baked, the filling bubbles through the crumbly topping for a balance of soft fruit and a buttery, crisp oat crust. Chilling before baking helps the topping maintain its shape.
Prep Time
10 mins
Cook Time
35 mins
Total Time
45 mins
Servings:
16
bars
Calories:
255 kcal
Course:
Dessert
Cuisine:
American
Ingredients
Crust & Crumble Topping
- 1 1/2 cups all-purpose flour
- 1 1/2 cups rolled oats old fashioned
- 3/4 cups light brown sugar
- 1/2 teaspoon cinnamon
- 1/2 teaspoon kosher salt
- 1 cup butter cubed (2 sticks, cold
Blueberry Filling
- 1/2 cup granulated sugar
- 3 tablespoons cornstarch
- 2 1/2 cups blueberries
- 1 tablespoon lemon juice
- 1 teaspoon lemon zest
Instructions
Crust & Crumble Topping
- Line a 9×9 pan with parchment paper and coat with nonstick spray. Set aside.
- In a large bowl, whisk together flour, oars, brown sugar, cinnamon and salt. Add in the cold butter and using a pastry blender, cut the butter into the mixture until it resembles very coarse sand.
- Divide the mixture in half and press half into the bottom of the prepared pan to form the crust. Set aside both the pan and bowl with remaining mixture.
Cup of Yum
Filling
- In a large bowl, whisk together the granulated sugar and cornstarch. Add in the blueberries and coat in the sugar mixture. Add in the lemon juice and zest. Stir gently to combine.
- Spread the blueberries on top of the crust. Sprinkle remaining crust mixture evenly on top of the blueberries and press lightly.
- Refrigerate the pan for 30 minutes.
- Preheat the oven to 350° F. Bake for 35 to 40 minutes until the fruit starts to bubble. Remove from oven and cool completely before cutting.
Notes
- Store leftover bars in an airtight container at room temperature for up to four days.
- Freeze cooled bars wrapped in plastic wrap and placed in a freezer-safe container for up to four months; thaw overnight in the refrigerator before serving.
- Use cold butter and let the bars cool completely or chill in the fridge before cutting to keep their shape and prevent them from being messy.
Nutrition Information
Calories
255kcal
(13%)
Carbohydrates
35g
(12%)
Protein
2g
(4%)
Fat
12g
(18%)
Saturated Fat
7g
(35%)
Cholesterol
30mg
(10%)
Sodium
177mg
(7%)
Potassium
74mg
(2%)
Fiber
1g
(4%)
Sugar
18g
(36%)
Vitamin A
365IU
(7%)
Vitamin C
2.8mg
(3%)
Calcium
19mg
(2%)
Iron
1mg
(6%)
Nutrition Facts
Serving: 16 bars
Amount Per Serving
Calories 255
% Daily Value*
| Calories | 255kcal | 13% |
| Carbohydrates | 35g | 12% |
| Protein | 2g | 4% |
| Fat | 12g | 18% |
| Saturated Fat | 7g | 35% |
| Cholesterol | 30mg | 10% |
| Sodium | 177mg | 7% |
| Potassium | 74mg | 2% |
| Fiber | 1g | 4% |
| Sugar | 18g | 36% |
| Vitamin A | 365IU | 7% |
| Vitamin C | 2.8mg | 3% |
| Calcium | 19mg | 2% |
| Iron | 1mg | 6% |
* Percent Daily Values are based on a 2,000 calorie diet.