Line a 15-in. x 10-in. x 1-in. baking pan with waxed paper; grease and flour the pan and paper. Set aside. In a large bowl, beat eggs and egg yolks for 3 minutes. Gradually add sugar; beat for 2 minutes or until mixture becomes thick and lemon-colored. Beat in butter and molasses. Combine the flour, baking powder and spices; fold into egg mixture. Spread batter into prepared pan.
Bake at 375° for 9-11 minutes or until cake springs back when lightly touched. Cool in pan for 5 minutes. Turn cake onto a kitchen towel dusted with confectioners' sugar. Gently peel off waxed paper. Roll up cake in towel jelly-roll style, starting with a short side. Cool completely on a wire rack.
For filling, in a small skillet, saute pears in butter until tender. Remove from the heat; stir in brandy. Cool completely. In a large bowl, beat the cream, confectioners' sugar, cinnamon and ginger until stiff peaks form. Gently fold in pear mixture.
Unroll cake and spread filling over cake to within 1/2 in. of edges. Roll up again. Cover and refrigerate for 1 hour before serving. Dust with additional confectioners' sugar and cinnamon if desired. Yield: 10 servings.