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["Preheat oven to 375F.", "Line three 9 inch cake pans with parchment paper.", "Set aside.", "In a large bowl, beat 1-1/2 cups butter with 1-1/2 cups sugar until light and fluffy.", "Beat in eggs one at a time.", "In a medium bowl, stir together the flour and cinnamon.", "Stir this mixture into the butter/sugar mixture with a wooden spoon.", "Divide dough into 8-9 equal portions.", "Spread one portion in each pan.", "Bake for 8-12 minutes or until golden brown.", "Cool the cookies in pans on racks.", "Remove from pans, reline pans with parchment and repeat with remaining 6 portions of dough.", "When all cookies are baked and cooling, prepare filling.", "Filling:.", "In a large bowl whip the cream until stiff.", "Sift cocoa and fold into cream.", "In another bowl stir together sugar and sour cream until sugar dissolves.", "Stir in grated semi-sweet chocolate.", "Fold sour cream mixture into whipped cream mixture.", "To assemble:.", "Arrange one cookie on a cake plate; spread with about 1/9 of filling.", "Keep layering cookies and filling finishing with filling.", "Garnish with a pile of chocolate curls.", "To freeze: Freeze on a cardboard cake circle you can purchase at a baking supply store.", "Layer as above and then insert a few toothpicks in the top to hold the plastic wrap off the top of the torte.", "Wrap in plastic and then in foil.", "Label and freezer for up to 2 months.", "To serve:.", "Thaw on counter for 1 hour before serving.", "Unwrap, remove toothpicks and garnish with the chocolate curls.", "To make chocolate curls: Run a vegetable peeler over a brick of chocolate and pieces will ""curl"" off the peeler."]