In a large bowl beat the sugar, oil, eggs, and vanilla until blended.
In a separate bowl, combine the flour, baking powder, baking soda, and cinnamon.
Gradually add dry ingredients into the sugar mixture until just blended.
Stir in apples and pecans (optional).
Pour into a lightly greased 9x13 baking pan.
Sprinkle with butterscotch chips.
Bake at 325 degrees for 55-60 minutes or until a toothpick inserted in the center comes out clean.
Cover loosely with foil in the last 10-15 minutes to prevent over browning, if necessary.
Cool on a wire rack.
Sprinkle with powdered sugar when ready to serve.