Mix together 1 yellow cake mix, 1 small pkg. pistachio pudding (dry mix), 1 cup 7-up, 3 eggs, and 1 cup MINUS 2 tablespoons of oil.
Bake in a greased loaf pan (or bundt cake pan) at 375 for 35 minutes. Can be drizzled with a somewhat thin mixture of powdered sugar and milk.
*I think it takes about 35 minutes in the bundt pan, but when I made mine in the loaf pan it took about 40ish minutes, just keep checking it.