Line a baking sheet with parchment paper or spray with nonstick spray.
In a mixing bowl, cream together butter and vegetable oil with a mixer until fluffy. Add cookie mix and blend completely. Add egg, vanilla, orange zest and 1/2 tsp. cinnamon; beat until completely blended.
Drop dough by rounded tsp. onto prepared baking sheet, about 3-inches apart. Mix 1/2 tsp. cinnamon into 1-1/2 Tbsp. sugar for topping. Flatten each cookie to1/4- inch thick using a glass dipped in topping mixture. Sprinkle a pinch of topping on each cookie.
If adding walnuts, sprinkle a few on each cookie and press with the glass again to push the nuts into the cookie. Bake cookies at 350˚F for 13-15 minutes or until edges are lightly browned.
Cool on rack or countertop. Keep in sealed container up to 1 week.