1 box yellow cake mix with pudding in mix
3/4 c. oil
4 eggs
8 oz. sour cream
Crushed walnuts (optional)
Toll House chocolate chips (optional)

CENTER:

1 c. brown sugar
2 tsp. cinnamon

GLAZE:

1 c. powdered sugar
2 tbsp. milk
1 tsp. vanilla

Mix first part and pour half in a greased and floured sheet cake pan. Sprinkle 2/3 of center over, then cover with rest of batter. Sprinkle rest of center on top. Bake for 40 minutes at 350 degrees. Spritz glaze on afterwards.

OPTIONAL: Add chocolate chips to batter, or crushed walnuts to center.