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["Position knife blade in food processor.", "Add flour and butter and pulse 4 or 5 timestil mixture resembles coarse crumbs.", "Add sour cream and egg.", "Process til dough forms a ball and leaves sides of bowl.", "Divide in half, wrap with plastic wrap, and chill 6-8 hours.", "Roll out each ball of pastry on a lightly floured surface to an 1/8"" thickness.", "Cut pastry into 3"" squares.", "Gently press each square into a 1 3/4"" muffin pan leaving corners extending beyond edge.", "Spoon 1 teaspoons filling into each prepared shell.", "Fold corners over filling and pinch together at the top.", "Chill 30 minutes.", "Bake at 375 degrees for 20-25 minutes.", "Remove from pan and cool on wire rack.", "Sprinkle with powdered sugar.", "Cheese filling:.", "To make the cheesecake-like filling, beat all ingredients at medium speed til smooth and fluffy."]
