Instructions: For cake:
Preheat oven to 375. Spray 15 x 10 x 1 inch baking pan with vegetable oil. Sift flour, cinnamon, ginger and allspice into a small bowl.

With electric mixer, beat egg yolks, sugar and brown sugar in large bowl until very thick, about 3 min. On low speed, beat in pumpkin, then the dry ingredients. In another bowl, using clean dry beaters, beat egg whites and salt until stiff, but not dry. Fold egg whites into batter in 3 additions. Transfer to prepared pan. Bake about 15 minutes until cake tester comes out clean.

Place smooth (not terrycloth) kitchen towel on work surface. Dust generously with powdered sugar. Cut around pan side to loosen cake. Turn cake onto towel.

Fold towel over 1 long side of cake. Starting from the long side, roll up cake in towel. Arrange seam side down and cool completely, about an hour.

For filling:
Pour rum into heavy small saucepan. Sprinkle gelatin over. Let stand until gelatin softens, about 10 minutes. Stir over low heat, just until gelatin dissolves. Beat chilled whipping cream and 3 Tbsp. powdered sugar n large bowl until firm peaks form. Beat in gelatin mixture. Fold in 6 Tbsp. toffee pieces.

Unroll cake. Sprinkle with 4 Tbsp. toffee pieces.

To assemble:
Spread filling over cake, starting at long side. Using kitchen towel as an aid, roll up cake to enclose filling. Place cake seam side down on platter. (Can be prepared one day ahead, covered with foil and refrigerated. Trim ends of cake on a slight diagonal. Dust with powdered sugar. Spoon some warm sauce over the top of cake. To serve, cut crosswise into 1 inch thick slices. Pass remaining sauce.

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