Preheat your oven to 350°F (175°C). Grease and flour a 9×13 inch baking pan.
In a large bowl, melt the butter in the microwave or on the stovetop.
Add the granulated sugar and brown sugar to the melted butter and whisk until well combined.
Beat in the eggs one at a time, then stir in the vanilla extract.
Stir in the pumpkin puree until everything is well mixed.
In a separate bowl, whisk together the flour, cocoa powder, cinnamon, nutmeg, cloves, and salt.
Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Be careful not to overmix.
Fold in the chocolate chips.
Pour the batter into the prepared baking pan and spread evenly.
Bake for 25-30 minutes, or until a toothpick inserted into the center comes out with moist crumbs.
Let the brownies cool completely in the pan before cutting into squares.
