INGREDIENTS
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2 cups all purpose flour
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1 Tablespoon cornstarch
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1 cup salted butter, room temperature
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1 cup granulated sugar
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1 large egg, room temperature
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1 teaspoon vanilla extract
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3/4 cup all purpose flour
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1/2 cup granulated sugar
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1 Tablespoon lemon juice powder (optional or see notes for substitution)
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4 Tablespoons unsalted butter, cold and cut into small pieces
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1 (14 ounce) can sweetened condensed milk
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2 large eggs
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2 Tablespoons lemon zest (I used about 3 lemons for this)
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1/2 cup fresh squeezed lemon juice
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2 cups fresh blueberries
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Confectioner's sugar