Preheat oven to 350 degrees, then combine the first three ingredients in a stand mixer, blending well, then add the next 3 ingredients.
Grease 15x10x1 jellyroll pan and line with waxed paper and grease again. Spread mixture evenly in pan, don’t spread too thin,and bake 15-18 mins. Let cool 4 mins.
Invert onto clean tea towel (not terry cloth) which has been sprinkled heavily with powdered sugar. Roll up from narrow end and cool 2 hours.
While its cooling beat filling ingredients.
Unroll cake and spread with the filling. Re-roll wrap in plastic wrap and foil. Chill thoroughly before serving, preferably overnight, or freeze. Slice the roll into disks and serve.