In the bottom of your mug, combine the dry ingredients which are the flour, sugar, baking powder, salt, and pumpkin pie spice. Whisk to combine.
Then add your wet ingredients on top. Your wet ingredients are your pumpkin puree, oil, and non-dairy milk.
Mix very well to combine into a batter. You want to make sure to scoop up all of the flour that is on the bottom of the cup or else you will be left with uncooked flour after you microwave this cake.
Microwave for 1 minute and then check to see if the top is cooked. Then microwave for 30-60 seconds more or until cooked and the top is spongey like a real cake. PLEASE NOTE: all microwaves are different. You will have to cook this vegan pumpkin mug cake for at least a minute, but you may have to cook it longer if your microwave is on the weaker side. Don't be afraid to keep cooking, but just do it in 30 second increments.
Let cool a little bit and then enjoy with your favorite toppings!
