Combine flour, baking soda, ground cinnamon and salt in a mixing bowl.
Beat butter, granulated and brown sugar, eggs (egg replacer mixture) and vanilla extract with a hand mixer or in a stand mixer until light and well blended.
Slowly stir in the flour mixture and beat until combined. Finally add the oats and butterscotch chips and give a good stir.
Place 1 rounded tablespoons of the mixture on an ungreased baking sheet. Bake for 7~8 minutes for a chew cookie or 9~10 minutes for a crispy cookie. Cool on the baking sheet for 2 minutes, then transfer them over to a wire rack to cool completely.