Honey Bun Cake
["1 box yellow cake mix", "4 eggs", "8 oz. sour cream", "chopped nuts (optional)", "1 tsp. vanilla", "3/4 c. oil", "3 Tbsp. cinnamon", "1 c. brown sugar"]
["Mix cake mix, eggs, sour cream, vanilla and oil together until well blended.", "Pour 1/2 mixture into 13 x 9-inch or tube pan.", "Mix nuts, cinnamon and brown sugar.", "Sprinkle half over mixture. Swirl with knife.", "Pour other half of mixture into pan and sprinkle remaining brown sugar mixture; swirl.", "Bake at 325\u00b0 for 30 to 40 minutes."]
["yellow cake mix", "eggs", "sour cream", "nuts", "vanilla", "oil", "cinnamon", "brown sugar"]