Line 12 cup muffin tin or 24 cup mini muffin tin with liners sprayed with cooking spray. Alternatively, just spray the cups with cooking spray. Do not use paper liners as they will make removal of cupcakes difficult.
Mix the pumpkin, sugar, brown sugar, eggs, vanilla extract and milk.
Add flour, pumpkin spice, salt, baking powder and baking soda.
Fill each muffin cup with 1/3 cup of the mixture.
Bake for 30 minutes (mini muffin tin) or 35 min (full sized muffin tin).