Preheat oven to 350°F.
Line a standard size muffin pan with paper liners or reusable silicone liners.
Combine the flour, oats, baking soda, baking powder, salt, pumpkin pie spice, sugar, and brown sugar in a medium bowl and mix well.
1 cup all purpose flour, 1/2 cup old fashioned rolled oats, 3/4 teaspoon baking soda, 1 teaspoon baking powder, 1/4 teaspoon salt, 2 teaspoons pumpkin pie spice, 3/4 cup brown sugar, 3/4 cup sugar
Make well in the center of the dry ingredients and add the eggs, butter, and pumpkin puree.
2 eggs, 1/2 cup butter, 1 cup pumpkin puree
Whisk the wet ingredients together first, then mix them into the dry ingredients.
Stir in the chocolate chips.
1 cup semi-sweet chocolate chips
Fill the muffin pan cups 3/4ths of the way full. Top with additional chocolate chips, if desired.
Bake for 28-32 minutes, or until a toothpick inserted into the center comes out clean.