1 box yellow cake mix
1 c. water
1/3 c. oil
3 eggs
2 c. graham cracker crumbs
3/4 c. brown sugar, packed
1 1/4 tsp. cinnamon
3/4 c. butter, melted
1/2 c. chopped nuts; optional

Mix nuts, graham cracker crumbs, brown sugar, butter, and cinnamon; set aside.

Beat eggs, oil, and water into cake mix. Pour 1/2 cake batter into a 13 x 9 inch greased pan (I use a bundt pan). Sprinkle 2 cups of crumb mixture over batter, pour remaining batter, add remaining crumbs. Bake at 350 degrees, 45-50 minutes.