1 (18 oz.) pkg. white or yellow cake mix
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, etc.)

Mix cake mix together with sugar, oil, water and eggs. Add any or 2 combination of your choice of ingredients. (I prefer chocolate chips and coconut.) Spread into greased 9 x 13 inch pan and bake 20 minutes at 350 degrees. Cool and cut into bars.