Generally, follow the instructions on the cake mix package with the following modifications:
1. Substitute the water with 15 ounces of canned pumpkin.
2. Add 3 Tablespoons of sour cream or mayo to make them super moist and fluffy. (I prefer sour cream.)
3. Add 1/2 teaspoon of Pumpkin Pie Spice in addition to the spices already in the mix if you like it extra Pumpkin Pie Spice-y.
Helpful hint: A traditional ice cream scoop with that swivel blade thingy makes it easy to measure out the batter evenly.
For frosting, here's my Coconut Cream Cheese Frosting recipe (you can omit the coconut extract if you just want a simple cream cheese flavor):
https://cookpad.com/us/recipes/2531254-coconut-cream-cheese-frosting
