1 pkg. yellow cake mix
1 pkg. vanilla instant pudding
1 c. sour cream
4 eggs
1/2 c. vegetable oil
1 c. chopped nuts

STREUSEL:

1/2 c. sugar
2 tsp. cinnamon

Combine first 5 ingredients. Mix at medium speed for 7 minutes. Add 2/3 cup nuts. Beat 1 minute. Grease tube pan. Sprinkle some cinnamon/sugar mixture on bottom. Alternate batter and sugar/cinnamon mixture until used up, sprinkling sugar/cinnamon mixture on top. Marble with knife. Bake at 350 degrees for 55- 60 minutes or until cake springs back. Use rest of nuts to decorate the top.