Preheat the oven to 350 degrees F. Grease a 9 x 9 for thick brownies.
In a medium mixing bowl whisk together the flour, baking powder, salt, and cocoa until well combined, set aside.
In a large mixing bowl whisk together the sugar, butter, eggs and vanilla until well combined.
Stir together the dry ingredients and the wet ingredients together, set aside
In a medium mixing bowl stir together the pumpkin, eggs, vanilla, and pumpkin pie spice.
Spread 3/4 of the brownie batter evenly into your greased pan. Top your batter with the pumpkin mixture. Layer the last of the brownie batter on the top and lightly swirl a butter knife through the layers.
Bake for 25 – 28 minutes or until a tooth pick comes out clean from the middle of the brownies.