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1
Preheat oven to 425u00b0. Whisk together first 3 ingredients in a medium bowl. Cut shortening into flour mixture with a pastry blender or fork until mixture is slightly crumbly. Add milk, stirring with a fork until dry ingredients are moistened and mixture is soft enough to form a soft ball.
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2
Turn dough out onto a lightly floured surface, and knead 6 to 8 times. Divide dough in half. Roll 1 dough half to 1/4-inch thickness on a lightly floured surface, and cut into 1-inch-wide strips. Place on a lightly greased baking sheet.
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3
Bake strips at 425u00b0 for 15 minutes or until lightly browned. Transfer strips to a wire rack, and let cool completely (about 30 minutes). Reduce oven temperature to 350u00b0.
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4
Meanwhile, roll remaining dough half to 1/4-inch thickness; cut dough into 1-inch-wide strips.
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5
Sprinkle 2 cups sugar, 1/3 cup flour, and lemon juice over fresh blackberries in a large bowl, and gently stir; let stand 10 minutes.
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6
Spoon half of blackberry mixture into a lightly greased 13- x 9-inch baking dish. Break each baked dough strip into 2 or 3 pieces, and place on top of blackberry mixture in baking dish. Dot blackberry mixture with half of butter pieces. Spoon remaining blackberry mixture over baked dough strips.
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7
Arrange unbaked dough strips in a lattice design over filling, and sprinkle with 1 Tbsp. sugar. Dot blackberry mixture with remaining butter pieces.
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8
Bake at 350u00b0 for 50 to 60 minutes or until pastry is golden and mixture is bubbly. Serve with vanilla ice cream.
