Graham Cracker Coffee Cake

This is good, i have made it many times over the years.

Grease and flour a 9 x 13 pan.

Mix the first four ingredients together and put half of batter into pan.

Mix the remaining ingredients together and put half the crumb mix over the batter in pan.

Put remaining batter over the crumbs and last put remainder of crumbs on top.

Bake at 350 for 25-30 minutes.

yellow cake mix, eggs, vegetable oil, water, graham cracker crumbs, cinnamon, butter, brown sugar, walnuts