Cream butter, sugar and vanilla ... mixture alternately with sour cream. Combine pumpkin, beaten egg, sugar and pie spice. Spoon half of batter into 13x9x2 inch ... well blended; add nuts.
In small bowl combine nuts, ... 3 minutes. Spread half the batter in pan, sprinkle ... 60-65 minutes until cake pulls away from pie. Cool ... invert pan on rack.
Heat oven to 350 degrees. ... flour 12-cup Bundt cake pan. Prepare streusel filling by ... pan; sprinkle with half of the streusel filling (about ... sprinkle with powdered sugar.