Allow the cream cheese soften by letting it rest until it reaches room temperature. Cream together cream cheese, and pumpkin pie spice, blend with a mixer until smooth and fluffy. Add 1/2 cup of the powdered sugar, vanilla, and blend together well. Blend in the remaining powdered sugar. This is best if it rests for an hour or two to allow the flavors to mingle together. Serve with gingersnap cookies, apples, or graham crackers.