1 pkg. (about 18 oz.) cake mix (your choice)
1/2 c. brown sugar
1/2 c. cooking oil
2 tbsp. water
2 eggs, beaten
1 c. your choice: nuts, chocolate chips, coconut, raisins, dates, etc.

Mix cake mix together with sugar, oil, water and eggs. Add any or a combination of your choice of ingredients. Spread into a greased 9"x13" pan and bake 20 minutes at 350 degrees. Cool and cut into bars.