Spray a 9”x13” pan with cooking spray and set aside.
In a large bowl, stir together sugar, eggs, and vegetable oil. Stir in flour, baking powder, salt, and cinnamon. The mixture should be thick, more like cookie dough than batter.
Fold in chopped apples, butterscotch chips, and walnuts.
Reserve 2 cups and set aside, pouring the remaining batter into the pan.