Blueberry Oatmeal Bars Crumble (Print Version)
# Ingredients:
→ Crust and Crumble Topping
01 -
1/2 cup unsalted butter, melted
02 -
1 cup all-purpose flour
03 -
3/4 cup old-fashioned oats
04 -
1/2 cup granulated sugar
05 -
1/4 cup light brown sugar, packed
06 -
Pinch of salt, optional
→ Blueberry Layer
07 -
2 cups (12 ounces) blueberries, fresh or frozen
08 -
1/3 cup granulated sugar
09 -
2 tablespoons lemon juice
10 -
2 teaspoons cornstarch
# Instructions:
01 -
Preheat oven to 350°F. Line an 8-inch square pan with aluminum foil and coat with nonstick spray.
02 -
In a large microwave-safe bowl, melt the unsalted butter. Add flour, oats, granulated sugar, brown sugar, and salt; mix until the texture is sandy with some larger crumbs.
03 -
Set aside 1 heaping cup of the crumb mixture for the topping. Firmly press the remaining mixture into the prepared pan, forming an even, compact base.
04 -
In the same bowl, gently toss blueberries with granulated sugar, lemon juice, and cornstarch until well coated.
05 -
Spread the blueberry mixture evenly over the crust. Crumble the reserved topping evenly over the blueberry layer, encouraging larger chunks by squeezing the mixture before sprinkling.
06 -
Bake for approximately 55 minutes, or until the edges are set and the topping is pale golden. Adjust baking time if using fresh berries, reducing by 10–15 minutes as needed.
07 -
Place the pan on a wire rack and allow the bars to cool for at least 30 minutes before slicing to ensure clean cuts.
# Notes:
01 -
For neat slices, allow bars to cool completely before cutting, as they can crumble if cut warm.
02 -
Bars store well in an airtight container: up to 1 week at room temperature, 10 days in the refrigerator, or 6 months in the freezer.