I make this Pistachio Bread every year.
1 White cake mix
1 box pistachio pudding (instant)
1/2 cup oil
1 cup sour cream
4 eggs
1/2 cup white sugar
about 1/4 tsp green food color
Sift (don’t skip this) cake mix into large mixing bowl. Add everything else & combine thoroughly. Preheat oven 350. Grease 2 loaf pans & put 1/4 of batter in each pan. Mix 4 tsp cinnamon with 3 tsp white sugar, sprinkle half on batter in pans. Repeat with remaining batter & finish with remaining cinnamon mix on top. Bake 45-55 minutes. Test center with toothpick. Cool 10 minutes (important) then remove from pan & cool on wire rack.