Preheat your oven to (350°F) = (176C). Grease your muffin tin or use paper muffin cup holders.
I like to use my Kitchen-Aid mixer because it makes the batter fluffy, but a hand mixer will also work great.
Combine the dry cake mix with the can of pumpkin puree and mix until fluffy and creamy.
Add the ((optional) pumpkin spice, if desired and beat until smooth and fluffy.
Scook evenly into 12 muffin cups and bake at (350°F) = (176C) for 20 minutes or until a toothpick comes out clean.