Preheat oven to 375.
Combine sugar and butter in a mixing bowl. Once the mixture is nice and smooth, add the eggs and vanilla. Add in the pumpkin. Beat or mix again until a smooth consistency.
In a separate bowl, mix dry ingredients. Slowly stir those into the butter mixture until the cookie dough is well mixed.
Mix the sugar and cinnamon for the topping either in a bowl or on a plate. I like to do this on a plate and then roll the cookie dough balls through it.
Roll batter into 2-inch size balls. Place on cookie sheet. Press each ball of dough down to flatten.
Bake for 10-12 minutes.