Mix all dry ingredients together in a large bowl (except raisins and banana chips).
In small bowl, combine all wet ingredients and whisk to blend.
In separate bowl, mix oil, water and vanilla together and then add to dry ingredients; stir until mixture is dampened.Feel free to mix and match dry ingredients to your taste. For example, you may like less nuts and more raisins, or you may want to add dried apricots, ginger, etc.
Spread mixture evenly on a rectangular baking pan. I prefer a large stoneware pan because of the way it evenly distributes the heat, but a large cookie sheet is fine.
Bake at 275 for 40 minutes, turning the mixture every 15 minutes, until golden brown.
Let cool completely; add the raisins and banana chips.
Store in air tight container.