Preheat the oven to 350℉. Line an 8x8 inch baking pan with parchment paper.
In a medium mixing bowl, whisk together the pumpkin puree, maple syrup, eggs, and vanilla.
In a second large mixing bowl, combine the flour, cocoa powder, espresso powder, salt, baking soda, and baking powder.
Make a well in the dry ingredients and add the wet ingredients. Mix to combine. Fold in ⅓ cup of chocolate chips.
Spoon the batter into the baking pan (it will be thick!). Use a rubber spatula to spread the batter into an even layer. Top with the remaining 2 tablespoons of chocolate chips.
Bake for 18 to 20 minutes, or until a knife inserted into the center comes out cleanly (there will be a few crumbs sticking to the knife). Allow the brownies to cool in the pan on a wire rack for about 20 minutes.
To make the drizzle, add the white chocolate chips and coconut oil to a small microwave safe bowl. Heat for about 30 seconds, stopping every 10-15 seconds to stir the chocolate and prevent tempering. Drizzle the white chocolate over the brownies. Cut into 12 squares. Enjoy!