Preheat oven to 350 degrees F. Line baking sheets with parchment paper.
In a large bowl, cream together softened butter and granulated sugar until light and fluffy.
Beat in the eggs one at a time, then stir in the pumpkin puree and vanilla extract.
In a separate bowl, whisk together flour, baking powder, baking soda, cinnamon, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
Drop rounded tablespoons of dough onto the prepared baking sheets, about 2 inches apart.
Bake for 10-12 minutes, or until the edges are lightly golden and the centers spring back when gently touched.
Let cookies cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.
For the filling: In a bowl, beat softened butter, heavy cream, cinnamon, and vanilla bean extract with an electric mixer until light and fluffy.
Gradually beat in the powdered sugar until smooth and creamy. Add more powdered sugar if needed for desired consistency.
Once the cookies are completely cool, spread about a tablespoon of filling onto the flat side of one cookie. Top with the flat side of another cookie to create a sandwich.
Store in an airtight container.
Notes
These pumpkin pie cookies are best enjoyed within a few days. Store in an airtight container at room temperature, or in the refrigerator for longer storage.