"Featuring a juicy blueberry filling and a buttery, crumbly brown sugar streusel, there's much to love about these blueberry pie bars...."
INGREDIENTS
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1 and 1/2 cups (188g) all-purpose flour (spooned & leveled)
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1 cup (85g) + 2 Tablespoons old-fashioned whole rolled oats, divided
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1/2 cup (100g) light brown sugar
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1 teaspoon baking powder
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1 teaspoon lemon zest
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1/4 teaspoon ground cinnamon
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1/8 teaspoon salt
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10 Tablespoons (141g) unsalted butter, melted
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4 and 1/2 cups (about 700g) blueberries, fresh is best*
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1/2 cup (100g) granulated sugar
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2 Tablespoons cornstarch
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1 Tablespoon lemon juice
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2 teaspoons lemon zest