1 pkg yellow cake mix
½ cup vegetable oil
1 cup sour cream
4 eggs
1 pkg pistachio instant pudding mix
½ cup sugar
1 tsp cinnamon
1 cup chopped walnuts
Do not preheat oven or follow directions on cake mix package.
Mix all ingredients and beat for 5 minutes. Pour half of the mixture into greased Bundt pan.
Blend sugar, cinnamon, and walnuts. Sprinkle half the mixture over the cake mix. Repeat layers and swirl with knife.
Starting from a cold oven, bake at 350° for 60 minutes.