1 box white cake mix
1 (3 1/2 oz.) pkg. pistachio pudding mix
1 c. oil
3 eggs
1/2 c. pecans, chopped
1 c. club soda

Combine all ingredients in a large electric mixer bowl; beat 4 minutes at medium speed. Pour batter into a greased and floured 10-inch tube pan.

Bake at 350°F for 45 to 50 minutes. Turn on wire rack to cool. Frost with Pistachio Frosting.

Pistachio Frosting:

2 envelopes Dream Whip
1 1/2 c. cold milk
1 (3 1/2 oz.) pistachio pudding mix
1/2 c. pecans, chopped

Mix ingredients and spread on cake. Garnish with pecan halves.