1 box yellow cake mix
1 sm. pkg. instant vanilla pudding
4 eggs
1/2 c. oil
1 c. sour cream
4 tbsp. brown sugar
1 tsp. cinnamon
1/2 c. chopped walnuts

Combine the cake mix, pudding mix, eggs, oil, and sour cream in a large bowl. Beat at medium speed for 5 minutes. Pour into a greased and floured 9x13 inch pan.

In a small bowl, mix the brown sugar, cinnamon, and nuts, and sprinkle over the batter. Bake at 350 degrees for 35 minutes.