Preheat oven to 400 degree F and line cupcake or muffin tin with paper liners.
Whisk together the flour, baking soda, baking powder, salt, and pumpkin pie spice in a medium bowl.
1.5 cup all purpose flour, 1 tsp baking soda, 1/2 tsp baking powder, 1/2 tsp salt, 1 1/2 tsp pumpkin pie spice
In a stand mixer fitted with a paddle attachment, add the eggs, pumpkin puree, sugar, melted butter, and vanilla. Beat on the lowest setting until just combined, do not over mix. If mixing by hand, mix gently until all ingredients are combined.
1 15 oz can pumpkin puree, 1/3 cup melted butter, 2 eggs, 1 cup sugar, 1 tsp vanilla
Add half of the dry ingredients to the pumpkin mixture and mix on the lowest setting. Add the second half of the dry ingredients and continue to mix until combined, being careful not to over mix!