With an electric mixture, blend together the softened cream cheese and powdered sugar.
Mix on low speed until the mixture is light and fluffy.
Add the vanilla and mix a minute longer.
Spread icing on one side of pumpkin spice cookie half, then top with another cookie lightly pressing to seal.
Keep left over cookies refrigerated
Note: To make the butter cream icing, just skip the cream cheese and add another stick of butter and an extra cup of powdered sugar.