Spray 15x10x1-inch pan with cooking spray; line with waxed paper. Spray waxed paper with additional cooking spray; dust with flour.
Sprinkle clean towel with 1/4 cup powdered sugar.
Mix flour, spice, baking powder and salt. Beat eggs and sugar in large bowl with mixer on high speed until thickened.
Add pumpkin; mix well.
Add flour mixture; beat just until blended.
Spread onto bottom of prepared pan; sprinkle with nuts.
Bake 15 min. or until top of cake springs back when touched in center. Immediately invert cake onto towel; remove pan. Carefully peel off paper. Starting at one short side, roll up cake and towel together. Cool completely on wire rack.
Beat cream cheese and 1/2 cup powdered sugar in medium bowl with mixer until blended.
Spread cream cheese mixture over cake. Reroll cake; wrap in plastic wrap. Refrigerate 1 hour. Unwrap and sprinkle with remaining powdered sugar just before serving.