1 pkg. yellow cake mix without pudding
1 pkg. instant pistachio pudding
1 c. sour cream
1/4 c. (each) oil, water
4 eggs, slightly beaten
12 c. pistachios, chopped

Mix and set aside.

Mix 4 tablespoons sugar, 2 teaspoons cinnamon, 1/2 cup nuts--Put half the batter in greased/floured pan; sprinkle half of sugar mixture on, then pour in rest of batter; sprinkle rest of sugar mixture on top.

Bake at 350 degrees for 40 minutes or more.