Ingredients
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2 cups all-purpose flour
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1 cup old fashioned oats
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1 cup packed brown sugar
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1/2 teaspoon salt
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1/4 teaspoon ground cinnamon
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1 cup unsalted butter, cut into 1/2 inch cubes
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3 cups fresh blueberries
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1 cup blueberry preserves (10-11 ounces)
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1 tablespoon all-purpose flour
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1 teaspoon finely grated lemon peel
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1/2 cup sliced almonds
Instructions
- To make the crust: Preheat the oven to 375 degrees. Butter bottom of a 13x9x2 inch metal baking pan. Whisk 2 cups flour, oats, sugar, salt and cinnamon in a large bowl. Add 1 cup butter, rub with fingertips until mixture sticks together in small clumps. Transfer 2 cups to a medium bowl; mix in almonds and reserve for topping.
- Press remaining crumb mixture evenly onto bottom of prepared pan. Bake crust until golden and just firm to touch, about 22 minutes. Cool 10 minutes.
- To make the filling: Mix blueberries, preserves, 1 tablespoon flour and lemon peel in a medium bowl. Spread evenly over crust in pan, then sprinkle reserved topping over.
- Bake bars until filling bubbles thickly at edges and topping is golden brown, about 40 minutes; cool in pan on rack. Cut lengthwise into 4 strips, then cut each strip into 6 pieces, forming 24 bars.