Nana's Cinnamon Coffee Cake

• 1 yellow box or butter cake mix
• 1 cup sour cream
• 4 eggs
• 3.4 c veggie oil
• 1/2 cup sugar
• cinnamon mixture
  
• 3 T brown sugar
• 1 t cinnamon
  

Directions:
Mix it all together. Pour the batter into a well-greased 10 inch pan. Sprinkle with the 1/2 the cinnamon mixture. Pour in the remaining batter. Then spread with remaining cinnamon mixture. Swirl with knife. Bake 1 hour at 350 degrees.