Sour Cream Coffee Cake

1/4 c. brown sugar
2 t cinnamon
1 c. chopped pecans, divided
1 pkg yellow cake mix
3/4 c. salad oil
1/2 c. sugar
1 t vanilla
4 eggs
1 c. sour cream

Grease and flour 10" tube or bundt pan.
Combine br. sugar, cinnamon and 1/2 c. pecans, set aside.

Combine cake mix, oil, sugar, vanilla, eggs and sour cream. Beat 2 minutes at med speed of an electric mixer. stir in 1/2 c. pecans. Pour half of batter into prepared pan. Sprinkle brown sugar mixture over batter. Pour remaining batter into pan. bake at 325 deg for 50-60 minutes. Allow cake to cool in pan 30 min before turning out.