Preheat oven to 350ºF.
In a large bowl, mix together, the oil, pumpkin puree, white sugar and brown sugar. Add in the egg, and beat for a couple of minutes.
Sift in the dry ingredients: flour, baking soda, baking powder, salt and 1 teaspoon pumpkin spice mix
Line cupcake tin with cupcake liners (about 6-8)
Add in the pumpkin spice cupcake batter, filling about 3/4 of the way to the top.
Bake at 350 ºF for 18-20 minutes.
Cupcakes are done when toothpick inserted comes out clean.
Cool in cupcake tin for about 10 minutes, then transfer to wire rack to cool completely.