1/2cupsemi-sweet chocolate chips, plus more to sprinkle over top (optional)
Preheat oven to 350°F. Grease 9x9-inch pan with nonstick spray (I prefer Baker's Joy) or line with parchment paper.
In a large mixing bowl, whisk together the sugar and butter. Mix in eggs one at a time, followed by the pumpkin puree, water and vanilla; set aside.
In a medium bowl, combine the flour, cocoa, baking powder, spices, salt. Add to the bowl of wet ingredients and stir. Fold in the chocolate chips. Spread mixture into prepared pan and sprinkle with optional additional chocolate chips.
Bake in preheated oven for 15-20 minutes, until set and done in the middle. Remove from oven and let cool completely before slicing.
Baking times may vary if using a glass or pyrex pan.
Substitute pumpkin pie spice with 1/2 tsp cinnamon, 1/2 tsp allspice, 1/4 tsp nutmeg.