1 box Duncan Hines butter cake mix
3/4 c. cooking oil
1/2 c. sugar
1 c. nuts
1 c. sour cream
4 eggs
1 tsp. vanilla
2 - 3 tbsp. brown sugar
1 tsp. cinnamon

Mix all ingredients except brown sugar and cinnamon. Prepare bundt pan by coating with oil and sprinkling with flour. Pour half of batter into pan, then sprinkle with brown sugar and cinnamon. Add remaining batter. Bake at 350 degrees for 50 to 60 minutes.