Pumpkin pie spice is easy to make at home! Just blend equal portions of ground ginger, nutmeg, allspice and clove with 3 times as much cinnamon. So, you can combine 1/2 teaspoon each of ginger, nutmeg, allspice and clove with 1 1/2 teaspoons of ground cinnamon. This will give you 3 1/2 teaspoons of pumpkin pie spice.