In a glass, combine pumpkin puree, milk, spices and vanilla. Use a milk frother to evenly combine all the ingredients.
Heat water to 175F then sift matcha through a fine sieve into a matcha bowl, using a small spoon to push through. Add the water to the bowl and use a bamboo whisk to whisk vigorously in a back and forth "M" shaped motion for about 30 seconds, or until no clumps remain and a fine layer of froth has formed at the top of the bowl.
To assemble, add a generous amount of ice to a glass, followed by the pumpkin pie milk, prepared matcha and cream top. Finish it off by gently placing the pie crust topping on top. Enjoy immediately!