Here's what I used (any variation will work, I'm sure)
Strong Coffee (1/2 coffee ground to 6 cups water)
Pumpkin Spice Creamer
First, I started my coffee. Then I put about 2 tbsp of creamer in my mug, along with a 1 tsp of vanilla extract. Put that in the microwave for about 30 secs to warm it up. Then, mix in about 1 tbsp pumpkin puree and wait for your coffee to finish...
and here's what I ended up with (I'm drinking it as I type and it's delcious).